Industry solutions From Longwei

As a long-term practitioner in the slewing bearing market, we are committed to innovation and personalization. As part of this, we develop solutions for the most diverse applications, all of which have something in common: they go beyond ordinary.

As a market leader in slewing bearings, we lead the trend – providing a comprehensive product portfolio for various industries.
With over 20 years of experience, we can specifically meet the different requirements of various industries. We work with customers to develop suitable personalized bearing solutions.

Identify which solutions exist in each industry:
We are involved in the following industries-

Building & infrastructure,Mechanical & plant engineering,Renewable energy,Oil & gas,Precision applications,Transport & conveying engineering

Industry solutions suitable for your application
Is your industry or application not represented? Please feel free to contact us. We will find a suitable solution together.

Our Industry Solutions

Construction and infrastructure
Our cities are growing rapidly. Forecasts estimate that in the next 30 years, so within one generation alone, a further three billion people worldwide will move to metropolitan regions. This presents massive challenges, not only for transport and traffic, but, above all, for the infrastructure and construction of buildings.
Here at Longwei transmission , we are actively participating in shaping the cities of tomorrow with our innovative products: whether this is through passenger transport or the implementation of construction projects.


Excavators are put to use wherever the movement of earth is required: This begins with gardening and landscaping, where so-called mini or midi-excavators are used, and extends to street and house construction with medium-sized excavators, culminating in opencast and large-scale mining, where large excavators and mining excavators provide reliable support.
LONGWEI plays a crucial role in ensuring that this machinery is able to perform its hard work on construction sites every day. And it does this all around the world. Designed in close collaboration with the manufacturer, our slewing bearings constitute a key component of the respective excavator models.

2. Our solutions for excavators

A . Small Excavator :

The use of so-called small or mini excavators is becoming increasingly popular for gardening, landscaping, house renovations, and for road reconstruction. The operating weight of these types of excavators is around one to six tons for mini excavators and around seven to ten tons for midi excavators. These excavators mainly move on rubber tracks. The demands on the slewing ring between the chassis and body are particularly high here.

Medium-sized excavators

Medium-sized excavators have an operating weight ranging between 10 and 60 tons, and can have both a wheeled or a tracked chassis. The fields of application for this type of excavator are very diverse. They range from house and street construction to loading and unloading activities. This places particularly high demands on the slewing ring between the chassis and body. Since the slots at the construction site tend to be very tight, downtime must be avoided. Irrespective of whether you have interior of exterior gearing, the slewing ring must be easy to service, durable and robust.

Large excavators and mining excavators

The term mining excavator refers to the group of largest excavators with a bucket capacity of over 50 tons of material weight. These machines are mainly used in mines for the extraction of coal, ores, and other raw materials. Their higher levels of mobility constitute an advantage over bucket excavators. This is achieved by means of the bearing, which ensures a connection between the upper structure and chassis of the excavator, enabling you to swivel around the whole work area. 

Large excavators and mining excavators have an operating weight of around 50 to 200 tons. They are used in quarries and other, similar spoil pile areas. These excavators’ chassis generally have a chain drive. Harsh operating conditions and high levels of dust and dirt accumulation are also particularly challenging for the slewing rings between the chassis and body. Thanks to its many years of experience,  LONGWEI is always able find a suitable solution for the manufacturer, ensuring that unnecessary operational downtime is avoided. 

Crawler cranes

Crawler cranes are used if the field of application is not accessible for a hydraulic excavator, for example, if a large height difference must be overcome but there is not enough space. They can extract from water and also be used in sand and gravel pits. Not even trenches for diaphragm walls are a problem for crawler cranes.   

Bucket excavators

 Bucket excavators are amongst the largest excavators in the world. They are mainly used to extract raw materials in large-scale and opencast mining. Bucket excavators are particularly well suited to lignite mining, given their considerable output levels of up to 240,000 tons per day.

LONGWEI bearings are used in several parts of these types of excavators to ensure that the several hundred metres high and several thousand tons of heavy machinery can be used effectively. This begins with the paddle wheel bearings, which must be especially protected against dirt, and extends to the portal bearing, which makes the swivelling of the upper structure on the chassis possible. Pivot bearings are used on the conveyor belts and spreaders, which are necessary for the handling of the spoil piles. Other applications include for bridge bucket wheel machines and drumming machines, which are used for the handling and mixing of bulk materials, and for the often 100-metre-long cantilever to which the bucket wheel is attached. Several slewing rings with various rotation axes are also used in a bucket excavator.

The accumulation of dust and dirt during extraction work is a big challenge for the technology. In order to prevent downtime due to defects, we bring our experience into collaborating with manufacturers.

Drilling Equipment

Three row ball slewing bearing for CANYON EQUIPMENT  MR-A500 Excavator Drill

If pits are required without pit inclinations, as is the case for fence posts, fountains or heat pumps, drilling equipment can be used. For this, great depths must be conquered, which will result in high speeds and long intervals of operation on the slewing ring.

Their malfunctioning would delay the work, and perhaps even lead to the tool being damaged. LONGWEI can draw on its experience from various different areas of application here and develop robust and long-lasting solutions.

Automotive engineering

As flexible modes of freight transport, lorries are at the centre of global logistics. The increasing demand for transport capacity is met by ever larger modes of transport. This introduces a unique set of challenges for manufacturers of semi-trailers and trailers since these transportation vehicles must be particularly agile on the narrow streets of our cities.

Slewing bearings by LONGWEI are a key component for controllable axes. They also come in a turntable edition to be used with trailers. Drawing on their many years of experience, our engineers develop economical solutions to ensure freight transport remains safe and efficient.

The reliability, durability and ease of use of the slewing bearings made by       LONGWEI not only benefits the transporting of loads, but also of people. They can be found as reliable central swivel joint bearings and motor bogie bearings in many trams and articulated buses.

Our solutions in the field of automotive engineering

Unbeknownst to passengers, our bearings provide their services smoothly and reliably in trams. Today’s trains are markedly larger and more comfortable than older models, yet travel along as narrow a rail network as before. This poses great challenges for engineers, especially when it comes to curves.

LONGWEI slewing rings help to solve this problem: Our bespoke central swivel bearings and motor bogies impart excellent driving features upon modern trains. Thanks to the durability and easy maintenance of our bearings, vehicles meet even the highest safety demands despite long service intervals.

Typical products

flange type slewing bearing

Single row 4 point contact ball slewing bearing

Forced steering semi-trailers
The number of goods being transported on the roads is increasing more rapidly than the number of available transporters. In addition, the goods are becoming ever larger, longer and heavier. This means that semi-trailers must be upgraded too since to ensure efficient logistics, they must be able to move around securely in the existing transport network. The turning circle of the vehicle is the crucial factor here. In spite of large dimensions, it must be kept as small as possible.
Here too, slewing bearings made by LONGWEI rothe erde are used. Together with the manufacturer of the semi-trailer, our engineering team will develop a solution which enables large shipments to be carried out without interruptions and in an economical manner. Our bearings make it possible to precisely steer the additional axes of the semi-trailer. The result: good handling, even in narrow spaces. In this way, we make an active contribution to road transport security.

Lorry Trailers

Trailers are vehicles with a loading area but without their own engine. In order to increase the loading capacity of a lorry, trailers are attached to the tractor unit. In most lorry trailers, the front axis is mounted onto a pivot plate. All loads are carried using this pivot plate when driving and braking.  turntables, which are based on experience gained from decade of service and subjected to continuous quality controls, assume the loads and make it possible for the front axis to swivel. Should you have any questions or require any information, our engineering team is always at your disposal.

Articulated  bus

volvo double articulated bus

In locations where building a network of trams is uneconomical or where this cannot logistically be carried out, articulated buses represent an alternative. Nonetheless, growing cities, narrower roads, badly parked vehicles, and a growing number of passengers present a new set of issues for bus manufacturers. To enable the vehicles to smoothly manoeuvre through the city’s traffic, high-quality joint slewing rings are needed.

Our engineers can draw on their experience in the field of slewing bearings when developing the articulated buses of tomorrow. With the highest quality and reliability standards, we provide manufacturers with the optimal conditions: Buses with joint slewing rings made by LONGWEI remain a safe mode of transport, even under the strain of an emergency brake.

Skips (dumpers)

Skips  also called dumpers, are used on construction sites for the removal of excavation and construction materials. Everyday, hundreds of skips are used in large mining excavation fields. One single vehicle can transport a load of up to 400 tons. The skips bring valuable raw materials and excavation materials to the unloading sites, which are often far away, and where the material is either crushed or stored. A tiltable pit combined with a built-in slewing ring allows for precise unloading. Here too, solutions by  Longwei offer the optimal conditions for durable and smooth operation.

Fire brigade Turntable ladders

Turntable ladders are the vehicles most commonly used by the fire brigade. With these, people can be rescued from burning buildings and from great heights. For fire-fighting operations from above and at night, fire brigade turntables can also be used as mobile lighting masts. In order to be able to safely erect and turn the ladder, the precise, horizontal alignment of the vehicle is necessary. Uneven surfaces beneath can be manually evened out using extendible supports. Depending on the terrain, however, this procedure can be time-consuming and delay life-saving operations.

For this purpose, level-evening slewing rings made by   LONGWEI are the optimal solution: Special slewing rings even out the placement of the vehicle without losing any time and, thus, make safe work on the extended ladder possible.

Heavy-duty transport vechicles

Shipments of goods which exceed a given dimension or weight are classified as special shipments. For these, special vehicles are required, which allow for heavy loads and excessively long goods to be safely transported along narrow and bendy roads. Controllable wheel axes are needed for this.

 manufactures slewing rings with which vehicle manufacturers can separately control individual axes or take forced control of the axes.

Forklifts slewing attachment

40 tons Forklifts

Forklifts are becoming increasingly important in internal logistics: The loading and unloading of lorries, internal transport and the assembling of high-bay warehouses can all be rapidly carried out by these vehicles. Moving around the smallest of spaces and swivelling the lifted load are the most significant challenges to be solved by forklift manufacturers. A forklift swivel attachment, strengthened with durable slewing rings made by LONGWEI offers manufacturers an economical and technically-sophisticated solution.

communal utility vehicles

sweep machine

Slewing rings made by LONGWEI are used in the field of communal utility vehicles, especially in the construction of refuse collection vehicles. In urban spaces, they are predominantly used for emptying comparatively small bins. In order to make the best use of the vehicles, the waste must be permanently compressed. For this reason, rear loaders with a main shaft bearing press system are popular: The waste is emptied into rotating chambers, then pulled over a screw conveyor in the direction of the tailgate which continuously presses it together. This process must function smoothly and be adjusted to suit low-maintenance, long operations. LONGWEI’S engineering team accurately design the slewing rings used to match the specified loads.

Tunneling - Bearing solutions for tunnel boring machines

has been supplying high-quality, robust and reliable bearing solutions for the tunneling industry for over 10 years. Since then, over 20 bearings have been manufactured for use in tunnel boring machines.
The leading equipment manufacturers in the field of tunneling technology rely on the expertise of in a variety of bearing applications. Longwei is the perfect partner for these critical applications. In addition to the know-how, customers appreciate the all-round package of reliable bearing solutions that we provide, which include: engineering, production and after-sales service.
The requirements for the components of a tunnel boring machine (TBM for short) are immense, as a failure during the construction of the tunnel can not only result in unimaginably high costs and delays resulting in missed deadlines, but in the worst case also result in damage to the image and loss of reputation of the TBM manufacturer. In cases where the a bearing needs to be removed from the machine during operation, this will certainly result in significant project delays.
As a leading bearing manufacturer, works closely with the machine designer for each individual case to develop the optimal bearing solution for the cutter head as well as for the segment erector. Our scope of supply includes bearings for:

  • Full-face or partial-face cutting machines
  • Micromachines
  • Vertical boring machine

Customers of LONGWEI particularly value the wealth of experience in design and manufacture of slewing bearings for tunneling of up to four meters and even much larger.

Our product solutions for tunnel construction

Single row Four Point Contact Ball slewing Bearing   Single Row Crossed Roller Slewing Bearing  Three Row Roller Slewing Bearing

Single row Four Point Contact Ball slewing Bearing

Single Row Crossed Roller Slewing Bearing

Three Row Roller Slewing Bearing

013.50.1830 Internal Gear Single Row Ball Slewing Ring for Shield Tunneling Machine_

Cranes and lifting devices – Strong products for high loads and tilting moments

Since 2008, has been manufacturing and supplying rings and bearing solutions for cranes and lifting devices worldwide. Our products are the connecting element between the superstructure and substructure and thus enable the precise and safe rotation of the crane boom.

From mobile harbor cranes to shipyard cranes, offshore cranes or mobile cranes/ truck-mounted cranes –  products are reliable components in all applications:

  • High loading capacity, even with high tilting moments
  • Long service life due to precise calculations and accurate design
  • High quality standards in manufacturing and procurement
  • Extensive technical support, on- and offshore
As a strong partner for all crane and lifting device manufacturers, we also offer worldwide delivery of suitable spare parts and other services.   also manufactures components for deck cranes, revolving tower cranes, heavy duty / special cranes, railway cranes, rotating crossbars/ container spreaders, forest cranes, truck loading cranes, lifting platforms, portal cranes and pulleys.

hoisting machinery Hydraulic crance XGC180T

Concrete mixing and distribution rod integrated machine

Our product solutions in cranes and lifting devices

Kobelco SK210D-10 multifunctional disassembly machine

Our product solutions in cranes and lifting devices

Our products are used in these cranes and lifting devices

Deck cranes

Hydraulic Telescopic Knuckle Boom Marine Ship Deck Crane

As the ship’s own loading gear, deck cranes load and unload goods from cargo ships with a very high lifting capacity. Here, robust slewing bearings are in demand. They guarantee the swivel capacity of a deck crane under adverse maritime conditions: whether at irregular intervals with heavy loads or during high periods of operation when handling lighter and mid-sized loads.

Deck cranes have replaced traditional derricks on freight ships as the on-board loading gear. Today, this term comprises all ship cranes and lever mechanisms which load or unload goods. They are an important player in fast cargo handling, especially when no cranes with sufficient lifting capacity (SWL) are available in the destination port. The lifting capacity of modern ship deck cranes lies at between 5 and 1000 tons, depending on the profile of requirements.

· Typical products: Four-point bearings, double four-point bearing, three-row cylindrical roller bearing, double-row ball bearing slewing ring

Handling cranes / shipyard cranes

In port operations, handling and shipyard cranes are an essential support in transporting products, goods, and parts. These cranes are often rail-bound and characterized by their reliable technology and high durability. Since our bearings can withstand even the highest demands and loads, they have already been used around the world for several years.

Hose handling (HH) crane

Konecranes shipyard cranes       Hose handling (HH) crane

Typical products: four-point bearing, double four-point bearing, three-row cylindrical roller bearing, double-row ball bearing slewing ring

Lifting platforms

In the crane segment, lifting platforms represent a special variant. They are primarily used to lift people to places that are difficult to access. Whether the use is intended for mobility outdoors, on roofs, over shafts or in construction sites: The security aspect plays a central role. Our components combine cost-effective designs with high precision, which are characterized by a high safety factor.

Typical products: Single row four-point bearing ball , double-row ball bearing slewing ring

Rotating crossbars / container spreaders

Container lifting spreader beam

The operation sites for crossbars are very different. These include production halls, factory premises, logistics centers and container terminals, amongst others. Resilient and powerful components are needed to transport the relevant goods. We offer specially designed slewing bearings and rings for different requirements. In addition, we also deliver reliable and cheap standard models suitable for several deployment scenarios.

Typical products: four-point bearing, double-row ball bearing slewing ring

Mobile cranes / truck-mounted cranes

  • Mobile cranes and truck-mounted cranes are mainly used for heavy transport in the places where fixed cranes are not available. Whether for small and light models, or for strong and robust mobile cranes: we deliver the components required to fulfill both the technical and financial customer-specific demands. Even in the event of limited assembly space, we use our many years of experi-ence to develop customized solutions for mobile and truck-mounted cranes.

Typical products: four-point bearings, double four-point bearings, three-row cylindrical roller bearing, profile bearings, blanks, and machined rings

Forest crane

Forest cranes are used in all fields of forestry, whether as mobile machines in the forest or as stationary units in sawmills. Working in the forest presents a special set of challenges. These include uneven ground, working on steep slopes and in the smallest of spaces. Thus, high-quality flexible units with mobile pivot arms designed for heavy loads are in demand. Our products fulfill these demands reliably and with high economic efficiency as construction and connection components.

Forestry cranes and trailers of STEPA

Machine used to load timber, mainly tree trunks, onto trailers and trucks.
Typical products: four-point bearing, double four-point bearings, three-row cylindrical roller bearings

Revolving tower cranes

A revolving tower crane can be found at almost every construction site in the world. This crane allows for the powerful vertical and horizontal movement of goods, particularly in structural engineering. Revolving tower cranes can transport loads across long distances within the radius of action. Our product portfolio offers an economically attractive range of models, extending to sophisticated special designs with high levels of resilience and durability.

Typical products: four-point bearings, double four-point bearings, three-row cylindrical roller bearing, double row- ball bearing slewing ring, profile bearing

Sheaves / Pulleys

Sheaves and pulleys are used in almost every field of industry and are standard equipment in many types of cranes. Pulleys serve as suspension rope guides in the hook blocks. This requires special sheave bearings that are able to withstand the effects of sudden loads and multiple changes in direction of rotation. They are designed to be very rigid fixed bearings which not only absorb high, radial forces but also axial forces in both directions and are ideally suited for complex load distribution requirements.

Typical products: two-row cylindrical roller bearing, four-point bearing

Mobile harbor cranes

  • The mobile harbor crane stands on the quay and loads or unloads cargo from the ships docked there. Port operations are characterized by high levels of time pressure. For this reason, the efficient handling of goods is of great importance. Special operational demands are made of mobile harbor cranes. They must be compact and effective. Bearings made by LONGWEI offer the highest reliability throughout the entire service life of a crane.
  • Typical products: Three-row cylindrical roller bearing, double-row ball bearing slewing ring, four-point bearing, double four-point bearing

Railway cranes

Rail Cranes Lifting Capacity 15 Tons to 250   Railroad Crane COLMAR T10000FSCG

  • In railway, switch, and bridge construction, railway cranes are faced with the most diverse of tasks and of deployment scenarios, e.g. in the event of rail traffic accidents,

if trains or heavy goods need to be moved. Thus, railway cranes are designed to lift and move heavy loads.  LONGWEI three-row cylindrical roller bearings and four-point bearings are best suited for this purpose, since they are specifically designed for heavy loads in limited installation spaces.

  • Typical products: three-row cylindrical roller bearings, four-point bearings

Portal crane

  • The gantry crane, which like the loading and shipyard cranes also runs on railways, is indispensable for the loading of goods with very high requirements. On the portal of the upper part of the crane, the so-called trolley, which can transport heavy loads, crosses the direction of travel. Our products prove to be important construction and connecting elements for the loading of the heaviest of goods.
  • Typical products: four-point bearing, double four-point bearings, three-row cylindrical roller bearing, double-row ball bearing slewing ring

Heavy duty / special cranes

  • When large and heavy parts have to be moved, or when difficult conditions prevail, many cranes reach their limits. Besides a powerful upper and lower build, the crane also needs a particularly robust bearing to withstand the high levels of strain. Our specially created components make it possible to meet all the requirements in the field of heavy duty and special cranes.

Typical products: three-row cylindrical roller bearing

Offshore cranes

Liftboat Solutions for deck crane

TSC pedestal cranes

Offshore cranes are specially designed for use on the high seas and fulfill an important function in the field of oil and gas extraction, as well as in the installation and maintenance of offshore wind turbines. Our product portfolio offers a wide range of bearing designs. We will advise you comprehensively on which bearing solution ensures maximum safety for your application and represents an economically optimal design. This ensures maximum safety and an economically optimal design.

Typical products: four-point bearings, double four-point bearings, three-row cylindrical roller bearing

Truck loading cranes

If particularly bulky or heavy goods have to be loaded or unloaded onto or from trucks or other vehicles, loading cranes are needed. Irrespective of the operation site, our components fulfill the bearing requirement and load capacity for every application purpose. In doing so, we focus on solutions which remain economical for customers.

Typical products: four-point bearing, double four-point bearings, profile bearings

Construction machinery

Our solutions in the field of construction machinery

Drilling devices and attachments

Three row roller slewing bearing for CANYON EQUIPMENT  MR-A500 Excavator Drill

In order to complete construction projects in as little time as possible, machines such as soil drilling devices, skips, concrete pump cantilevers, vibrating rollers, wheel bearings and pivot bearings are indispensable.

LONGWEI slewing bearings are developed to withstand hard operating conditions around the world. In close collaboration with customers, our engineers develop economic solutions, which are perfectly tailored to individual demands.

A basic device with different attachments: Here, provides the optimal solution. Our experiences gained from the field of stand-alone devices are indispensable when it comes to attachments’ application scenarios and their specific operational conditions. slewing rings are designed to dependably meet expectations in terms of ease of service, reliability and durability.


Skips, also called dumpers, are often used on construction sites for the removal of excavation and construction materials, since the tilting device enables fast and precise emptying. delivers bearings for the built-in slewing ring, which allow for durable and uninterrupted operation.

Concrete pump cantilevers

Three row ball slewing bearing for XCMG concrete pump truck dimensions Concrete

Concrete is the most commonly used construction material. A concrete pump is used to transport the mass of concrete quickly and efficiently to areas which are difficult to access. A pivot arm which aligns the concrete pump’s nozzle with the desired location is required for this. A slewing ring makes sure that the pivot arm can be perfectly controlled. When developing and constructing slewing rings,   pays close attention to ensuring the latter’s precision and robustness meet the demands of construction sites around the world. High tilting moments when extending the concrete pump cantilever are reliably transmitted to ensure the pump operates safely.

Vibration rollers

compress soil and asphalt. A slewing ring in the break joint makes this type of roller very flexible. The front roller can be precisely controlled. This allows the vibration roller to reach the ground which needs to be compressed without the need for manoeuvring. This results in great time savings by reducing operational time at the construction site and by making the ground areas worked on more quickly accessible again. Our engineers have developed a product that withstands the hard operational conditions and strain caused by dust, dirt and heat that remains economical for roller manufacturers and guarantees reliability and ease of service for users.

Typical products

Wheel and swing loaders

Double row ball slewing bearing for KOMATSU WE1150 Wheel

loaders Light type slewing bearing for Caterpillar 988G Wheel loaders

Wheel and swing loaders are amongst the most versatile machines used for the transporting and removal of goods on a construction site. Since the attachments can be changed, there is a large range of operational areas. slewing rings in the break joint make it possible for these construction machines to move fast and flexibly around a small space. Of course, we also ensure the slewing rings are as robust and durable as possible.

Typical products

Precision applications

Certain applications call for roller bearings, which offer a particularly high level of precision under unusual operational conditions. For example, as far as assignments in or observations of space are concerned, or the safety of patients during a medical test.

Machine tools and production technology
Machine tools can be divided into two categories: On the one hand, they comprise work machines and along with tools, devices, measuring and test equipment, they also count as operational materials on the other. Above all, lathes and milling machines need to be mentioned here. LONGWEI slewing bearings are used as bearings for the main processing axis, where the highest demands are placed on the concentricity and axial run-out

Our solutions in the field of machine tools and manufacturing technology

Face plates

Face plates are clamping devices for lathes on which large, heavy, or irregularly shaped work pieces for processing are clamped in a vertical or horizontal position. For the storage of the face plates, slewing bearings with the highest levels of precision are needed. Only in this way can the high precision of the work pieces to be processed be ensured.

Typical products

Tool changer

The tool changer is a mechanical setting at a machining centre. With this, the tools or process-relevant aids are automatically loaded or removed from the machining spindle. The actual changing process is carried out with single or double grippers, or directly from the magazine to the spindle (in the so-called “pick-up changer”).


010.10.127 Small Diameter Cross Roller Slewing Bearing without Gear for KUKA handling Robot
KUKA six axis Robotic arm robot
010.10.127 Small Diameter Cross Roller Slewing Bearing without Gear for KUKA handling Robot

Robots are playing an increasingly important role in industrial and production processes. The intelligent automation technology can be profitably used in almost all industrial processes. Robots combine maximum productivity and optimal manufacturing times. Made-to-order robot technology can give producing companies a decisive competitive advantage. 

Robots have marked their territory across various sectors, out of which its innovations across the manufacturing industry is a worth watch. According to the International Federation of Robotics, with more than 518,000 industrial robots installed globally in 2022, robots are growing in popularity. They have become omnipresent in industrial operations and can be used for different work as well.

LONGWEI been supplying rings and slewing bearings for robot technology for years. Only the highest quality standards are applied to our products so that they meet customers’ demands for productivity and durability.

light type slewing bearing

 Single row ball

Military engineering

Military engineering ensures the security of our country .Military devices are used on land, water and in the air. That means, they must work reliably under extreme conditions and in all of the world’s climate zones. Our bearings are used both in heavy devices, such as armoured vehicles, and in sensitive optical devices. They are marked by their robustness, precision and reliability. Our bearing concepts are based not only on military norms and quality standards, but also on our decades-long experience and consequent research and development. Upon request, we are happy to carry out special measurements and tests in our R&D centre.

Our solutions in the military technology sector:


single row cross roller slewing bearing for  Containers with missiles and radar antenna of the air defense system

single row cross roller slewing bearing for  Weapons of anti-aircraft defense Pantsir-S1

single row cross roller slewing bearing for Tower for howitzers for India Artillery Gun System

single row cross roller slewing bearing for  Weapons of anti-aircraft defense Pantsir-S1

We design side swivel bearings for modern, stabilised towers – manned or unmanned – for battle and protection tankers, howitzers and air defence systems used on land and in water. Our bearings meet the requirements for lightweight construction and precision, and dispose of low and even rotational resistances. This remains true whether the journey be on terrain or at high sea. Moreover, part of our standard is for the bearings to be resistant to corrosion and to require minimal maintenance. Our height swivel bearings can be designed as fixed/fixed or fixed/loose bearings and have the same advantages as side swivel bearings.

Machine gun mountings

Machine guns are used both in mountings (racks of weapons) and in remotely-controlled weapon stations. Since demands on the bearings vary greatly, a variety of models are used here. From simple turntables through to solutions which correspond to a stabilised weapon tower in their design. To reduce the number of interfaces and the installation cost, further attachments, for example, drive designs can be partially integrated.


Single row cross roller ,double row ball ,  three row cylindrical roller ,slewing bearing for Radar System

Radars are used in air surveillance and in air defence, to be able to detect and track targets up to 2,000 kilometres away. Our bearings are built to meet the precision, rigidity and low and even turning resistance requirements, while also performing at high speeds.

Typical products

Double-row wire tilted roller bearing

single row cross roller slewing bearing

Three row roller bearing

Optical devices

Double-row wire tilted roller bearing  single row cross roller slewing bearing Three row roller bearing

Although there is a large variety of optical devices, they all have one thing in common: Shocks and vibrations must not be transmitted to the optics, or only to a very limited extent. Thus, the bearings used here must be highly precise, rigid and dispose of even turning resistance. All this, in a strictly defined scope.

Typical products

Recovery and engineer devices

Single row cross roller slewing bearing  for  Manitowoc Delivers Grove GMK4060HC Cranes to U.S. Army

Three row ball slewing bearing for JCB HIGH MOBILITY ENGINEER EXCAVATOR

Three row ball slewing bearing for Caterpillar M315   Military Wheeled Excavator

Recovery and engineer devices have cranes and excavators. The surfaces of the bearings used are generally hardened, which makes them suited to the special, military requirements. Particularly robust designs are used for particularly harsh assignments. 

Typical products

Ammunition feeding

Single row cross roller slewing bearing  for  loading machines OF Naval artillery and armoured vehicles

Naval artillery and armoured vehicles have loading machines. The ammunition can be found here in rotationally-symmetric magazines. The mobile handling machines require bearings without backlash with low and even turning resistances. 

Typical products

Steel rollers

In a track-driven vehicle, for example, a tank, the roller is part of the track drive on which the vehicle is placed. Without rollers, it would not be possible to have a vehicle with a track drive. The intelligent use of steel allows for a better running performance in comparison to when rollers made of aluminium are used. Steel rollers are barely heavier, but a lot more robust, which reduces maintenance costs later down the line.


Turntables are used in both machining in machine tools and in automation. Depending on their design, turntables can also be referred to as rotary tables, rotary indexing tables or dividing attachments. Depending on their use, they can also differ in terms of their shape or their precision and rigidity. In machining, the precision and rigidity demands placed on cutting processing are higher than in the non-cutting area. In contrast, in automation, the shortest switching times are required.

Typical products


Imaging investigation techniques have already been used in medical technology for decades. Development is moving towards techniques which produce increasingly detailed spatial images; in other words, which enable better test results, whilst simultaneously protecting the patients. To do this, the X-ray pipes and the detector rotate at high speed around the patient. 

Our bearings used here are designed so that they work smoothly and precisely, even at high speeds. In this way, LONGWEI makes an contribution to medical progress.

Luggage scanners, which are used for security checks at airports, among other uses, constitute a further application with similar requirements.

Medical scanner

Different types of scanners are used in medical technology. The most well-known methods are the computer tomograph (CT) and the magnetic resonance tomograph (MRT). With these devices, the pipes and detector rotate around the patients. This allows sectional images to be produced from which the doctor can obtain valuable physiological information for his diagnosis.

So that patients who are exposed to the equipment during the test feel relaxed, a quiet operation and high running precision are particularly important. The same applies to ensuring the frictional torque processes are uniform, even at high speeds.

Typical products

Luggage scanners

Single row cross roller,single row ball slewing bearing for china Airport Security X-ray Baggage/Luggage Scanner

Checking luggage plays an important role in flight security and in the security of public spaces. A large proportion of rucksacks, suitcases and bags have to be checked for unsafe objects within a short period of time. All this must be achieved without downtime and with a one hundred percent hit rate. For this, scanners which rotate at a high speed are used. In addition, the machines have to be very quiet wherever there are people in the immediate vicinity, for example at the security gate in the airport. This means bearings made by are an important component in the construction of high-quality luggage scanners.

Typical products

Antennae and telescopes

Telescopes are used to explore space and to observe distant objects. Among others, they serve to monitor satellites and space debris, and also to measure the earth, for example, when earth plate shifts have to be determined. In this, a distinction is made between optical telescopes and radio telescopes.

Telescopes carry out their task in all climate zones. From the rainforest to the South Pole, from the hot plains to the dry, hot mountains. So that telescopes remain operational over the long term, the bearings used in them must be perfectly precise, highly rigid, and dispose of low and even rotational resistances.

An antenna is used for the recording, identification and tracking of objects which are up to 1,000 kilometres away. This task must be reliable under all weather conditions and be carried out with high precision, whether stationary or mobile, permanently rotating or pivoting. Radio antennae serve to monitor ship and air traffic. The weather radar supplies us with daily weather forecasts by exploring bad weather fronts and measuring wind speeds.

Our solutions in the field of antennae and telescopes

Single row cross roller slewing bearing for World’s largest optical telescope  optical telescopes

Single row crosss roller, Doubel row roller ,three row roller slewing bearing for ASKAP CSIRO RADIO TELESCOPE WA

Telescopes are placed on a stable foundation. Their bases have a diameter which can be larger than 15 metres. A telescope must move with the speed at which the earth turns in order to be able to precisely follow the observed object. This is achieved by a yaw bearing. So that this movement can be regulated, the bearing’s frictional torque behaviour must be controlled, for example, by reducing the frictional vibration, also called the “stick-slip effect”.

Typical products

Elevation axis

Singles Row Cross roller slewing bearing for  Elevation axis  for radio telescopes

Singles Row Cross roller slewing bearing for HartRAO 15m Radio Telescope

Elevation bearings are needed to align the telescope in the sky. To achieve the necessary rigidity, i.e. the resistance to elastic deformation, two bearings are generally used, which can be designed in a fixed/fixed or fixed/loose structure. The fixed/loose structure has the advantage of being able to compensate for the length extensions of the telescope resulting from differences in temperature.

Typical products

Instrument bearings

For instruments, e.g. a camera or a cable winder to be able to rotate, the bearing on the device and the application situation must be adapted.

Mirror bearings

Mirrorbearings of telescope’s mirror          Single Row cross roller for Tertiary Mirror of TMT Optics ( Mirror bearings   FOR  telescope’s mirror)

In order to be able to accurately track and adjust the telescope’s mirror, bearings are needed which are both highly precise and rigid, and which have a low and even frictional torque curve. 

Nuclear engineering

Nuclear energy is used in many countries to guarantee energy supply. When using this type of energy, safety and reliability are paramount. This is already evident in the selection of materials, as well as in the quality certificates of components used.

Our applications

Reactor cover

Reactor covers are used to seal the reactor tank. Here, the use of radiation-resistant fats and stainless materials is indispensable. Depending on the assembly situation, bearings can also be manufactured in segmented components

Typical products

Fuel handling systems

westinghouse Fuel Handling Equipment

Special handling systems are used for nuclear fuel. Here too, radiation-resistant fats and stainless materials are used.

Dismantling techniques

Bearings are essential for the dismantling of (sub)systems. Which material is selected for the components depends, however, on the individual case and the deployment scenario.

Typical products

Transport and conveying technology

Even under the hardest conditions, our products ensure smooth operation. This can be witnessed both in the world’s mines, where excavators, stackers and reclaimers deliver their service, and in rough seas, where robust offshore cranes supply the oil extraction platforms.

LONGWEI  offers special solutions for countless areas of transport and conveying technology.

Industries in the field of transport and conveying technology

Maritime applications

The romantic idea of working on the high seas is deceptive. Stormy weather, burning heat and icy cold weather represent significant challenges both for people and materials. Under these conditions, offshore systems and their components must always work reliably.

The slewing bearings made by LONGWEI  boast the best of reputations in the offshore industry. They have been used in cranes, rudder post bearings, propeller shafts, and other maritime applications for decades already.

Rudder propellers

 Hydraulic well mounted rudder propellers

SEWART Rudder propellers

Rudder propellers are ship propulsions in which the propeller can be pivoted horizontally in any direction. The advantage of this over conventional motors with fixed propellers and rudders lies in its much improved manoeuvrability. Rudder propellers are typically used in cruise ships, ferries, icebreakers or dynamically-positioned drill ships. Slewing bearings with particularly precise gearing and long durability are used to make the swivelling of rudder propellers possible. Depending on the requirement, they are also equipped with multi-row sealing systems to prevent the entering of sea water. 

Offshore gangways

Onshore & Offshore Gangways and Bridges Tyne Gangway                 Three row roller slewing bearing for  DNV GL offshore gangways

Offshore gangways are used in both oil and gas extraction and in the offshore wind energy industry. They serve to transport goods and people between ships and offshore facilities. The extreme conditions on the high seas place the highest of demands on the design and quality of our slewing bearings.

Typical products


Single row ball slewing bearing for  IHC Robust winches

Anchor handling tug supply vessels are assistance vessels for oil rigs, pipelayers and for any other offshore structure without an engine. The pulling and moving of the anchor places high demands on the winches. For this, LONGWEI  offers annular rings or slewing bearings with horizontal rotational axes, which can be adjusted to fit with the relevant customer design.

Typical products

Mechanical and plant engineering

Mechanical and plant engineering as a classical engineering science is a highly innovative industry nowadays.

Alongside our customers, we face the many challenges of the future. Together, we design and build bearing solutions which support in developing and operating complex machinery and equipment.

The constant further development of the most modern processing technologies and the use of efficient materials ensure we are always able to supply our customers with the optimal type of bearing. This is what makes slewing bearings made by LONGWEI the perfect component for bearings in mechanical and plant engineering.

Packaging and filling machines

To securely transport products of all kinds, modern packaging machines are indispensable. They are used to pack the most varied of goods and liquids in many different variations and as special solutions, for example, as bottle and can fillers, sealing machines or film winders. Packaging machines must meet two main requirements: Both high throughput and low waste. Continuously rotating slewing bearings help with this: They minimise wear caused by the packaging process and ensure the machines attain a long service life.

Our solutions in the field of packaging and filling

Bottle and can fillers

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Bottle & Can Fillers | Newmapak Bottling Solutions


Liquids can be automatically inserted into cans or bottles using filling machines. Compared to linear variants, the carousel-based set up has established itself as an undeniably faster and more efficient filling solution. Slewing bearings made by LONGWEI , among other elements, make this type of filling machine possible by guaranteeing the continuous concentricity of the system. 

Typical products

Sealing machine

Automatic Forming Filling Sealing Machines (FFS)

Automatic Sealing Machine for Food Packaging

Using sealing machines, containers of all sorts can be sealed in a fully automated, efficient and secure manner. Generally, the machines are integral parts of modern filling machines. Containers are moved to the individual stations on large rotating carousels and conveyor belts. Our slewing bearings ensure this operation runs smoothly.

Film winder

In packaging technology, products are protected for further processing or transportation using paper, film or fleece. Film winders, also called unwinders, are used here. With these, products of all shapes and sizes can be packed. Our slewing bearings ensure the safe and reliable turning of the rotation axis in these machines. Moreover, their low friction levels mean wear and tear is minimised. This ensures the film winder’s faultless and, thus, long-lasting operation.

Typical products

General engineering

The development of new markets is a challenge for machine and plant engineering since framework conditions are constantly changing. With our efficient plants and procedures, we offer the solution to ever stricter energy and environmental requirements.

Individually developed, produced and delivered, our LONGWEI slewing bearings are used as a central part in all fields of general machine engineering. We supply our slewing bearings to the leading manufacturers in, for example, the fields of robotics, water treatment, machine tools, waste disposal, and many more. 

We accompany our customers right from the first idea, through construction and production, to after-sales services and joint research & development

Our solutions in the general machine engineering sector


Robots are playing an increasingly important role in industrial manufacturing and production processes, since they combine maximum productivity with optimised manufacturing times. Intelligent automation technology can therefore be profitably used in almost all industrial processes. Using this can secure producing companies a decisive competitive advantage.LONGWEI has been supplying the field of robotics with several rings and slewing bearings for many years.

Typical products

Water treatment

It is becoming increasingly important to develop environmentally-friendly solutions for the production and treatment of fresh water, in order to preserve our natural resources. Slewing bearings by LONGWEI used in modern water treatment systems have already been supporting the cleaning process pertaining to our most important resources for a long time.

Typical products

Single row cross roller slewing bearing

Swing bridge

Newcastle Swing Bridge | Co-Curate

Nowadays, swing bridges are an important part of the infrastructure which coordinates the interplay between waterways and roads. Slewing bearings made by LONGWEI make it possible to open roads for ships in a targeted fashion and then close again, allowing road traffic to drive over them once more.

Single row cross roller slewing bearing


Carousel Merry-go-round in amusement park at night city

Royal Caribbean CruisesFerris Wheels Around the World

Having fun is paramount for lots of people and families. Ever faster and more unusual rides in amusement parks offer entertainment for grown-ups and kids alike. However, to make sure visitors have a fun and relaxing time, safety is the top priority behind the scenes. Slewing bearings made by LONGWEI ensure that all of the rides’ rotational movements function reliably and smoothly.

Typical products

Single row cross roller slewing bearing

Pelletising plate

Three row roller slewing bearing for Pelleting Machine

Three row roller slewing bearing for GEMCO ENERGY Structure of electric pellet machine 150-300B

Pelletising machines help to give coarser structures to fine or powder-based products. This makes movements during transportation and handling easier and more secure. Pelletising machines are used in all kinds of industrial areas and in private too. For these, LONGWEI supplies slewing bearings which make the machines’ rotations stable and precise. 

Typical products

Waste compactors

Mobile waste compactors – Rikobaler

The need for space is increasingly in line with the increasing volumes of rubbish everywhere. Optimised disposal processes compact the volumes of rubbish, shred bulky parts, and tear large cardboard boxes. The compacters which are used here are powered by slewing bearings made by LONGWEI . They ensure disposal solutions are able to carry out their work reliably, and for the benefit of the environment.

Raw material extraction and processing

There are a number of steps and processes in both the extraction and processing of industrial raw materials. Specialist machines are used for this. They manage the extraction of minerals and raw materials, their handling, transportation, storage, and eventually their treatment, for example, the breaking, sifting or grinding.

Bearings made by LONGWEI  contribute to the technical advancement of raw materials treatment. The hard operational and environmental conditions require extremely robust bearings to ensure their further processing remains efficient.

Crushing plants

Three row roller slewing bearing for Portable Crushing Plants by Screen Machine Industries

Three row roller slewing bearing for NextGen Modular Crushing Plant – Mineral Resources

Crushing plants are used in the production of broken minerals. When crushing the lumpy feed material, high demands are placed upon the machines. For this reason, heavy load bearings are used for crushing plants.

LONGWEI  uses slewing bearings with the most diverse crushing capabilities in the crushing plant sector. Our bearings not only withstand the harshest demands worldwide, but also the heaviest loads. This is a guarantee for success for the industrial treatment of mineral raw materials and secondary materials, as well as for various recycling procedures.

Typical products

Vertical mills

Cement vertical mil

Vertical mill | vertical coal mill | slag vertical roller mill | coal powder preparation process for vertical mill

Vertical mills are mainly used for grinding brittle materials. They are suitable for the crushing of various construction materials and also of coal as part of coal treatment. The crushing of mineral materials is very energy intensive and is influenced by the size and dynamics of the acting load. 

Our roller bearings are manufactured in such a way so as to absorb this dynamic load. For this reason, they have already been successfully used in vertical mills around the world for many years.

Typical products

Drilling rig units

Machinery and equipment in the oil and gas industry are exposed to the harshest environmental conditions. For the harsh conditions to be withstood, particularly robust bearings are needed here. Our LONGWEI  slewing bearings have already been used for drilling rig units for many years. Their resilient construction and high reliability make them perfect for extracting crude oil, natural gas, brine and water.

Typical products

Smelting works engineering

A smelting or steelworks plant serves to produce unrefined iron and steel out of iron ore. The term, smelting technology, describes the process of producing steel, as well as the applications and machines used in doing so. These machines are equipped with both ball bearing and roller bearing slewing rings.

Our solutions in the smelting technology sector

Ladle turret/swifter

Three row cylinders roller slewing bearing for Ladle turret

Three row cylinders  slewing bearing for  ABAX STEEL Ladle Turret in Steel Plant

The ladle turret and swifter are in permanent use and set in their loading position. Roller bearing slewing rings made by LONGWEI  are used here: They guarantee the continuous operation of the continuous casting line and can withstand the high loads. This means that they can be used for several decades.

Typical products

Electric furnace cover

Three row cylinders  slewing bearing for Electric furnace cover

Three row cylinders  slewing bearing for medium frequency  melting furnace

To use old scrap steel for new products, it is first melted down in an electric arc furnace. The swivelling cover of this oven is an elementary part of this process. In order to avoid negatively impacting the process, it must be usable over the long term. and under extreme environmental conditions. This is why we develop bearings here at LONGWEI , which are specifically made to meet the needs of the smelting technology sector in terms of heat resistance and durability.

Typical products

Needle hole plug drilling machine

To allow molten unrefined iron to run from the furnace, tapping is carried out at regular intervals. For this, the lower lock, the so-called needle hole of the furnace, is opened. The needle hole drilling and plug machines must be able to guarantee both the precise drilling of the needle canal and its subsequent plugging.

Our slewing bearings, which have been especially designed to meet these requirements.

Typical products

Spoil pile and conveying equipment

Spoil pile and conveying engineering revolves around creating solutions for the conveying of bulk goods, such as coal, sand, ore or grains. Reliable and powerful bearings are an essential component here, since the conveying tends to take place under difficult weather conditions, and often in remote locations. Environmental influences, such as storms, earthquakes or extreme temperatures place high demands on bearings. This applies to the sealing system too. This must be considered during the design phase.

Our solutions in the field of spoil pile and conveying devices

Ship loaders/unloaders

Single row ball, double row ball  for ISKAR BULK MATERIAL SHIPLOADER

Single row ball, or three row roller slewing bearing for RUD Flexible  ship loader

Single row ball SB for Floating Dock Cranes - ISKAR Muhendislik Ltd.

Ship loaders and ship unloaders are important in ensuring the effective, material-saving and dust-free transportation of bulk goods on the shipping route. Coal, ores, phosphate, sulphur and fertilisers, but also food, such as grains, are fed onto continuously operational conveyor belts, and transported on a cantilever by means of the ship’s open loading hatch. From there, the goods get to the ship’s cargo space either in free fall, via a downpipe, or a slide.

For the ship to be optimally filled, it has to be moved under the cantilever. Elaborate manoeuvring can, however, be avoided if the cantilever’s unloading system is movable. This is where slewing bearings made by LONGWEI  come into play.

Typical products


Continuous ship unloaders

Continuous unloading systems are increasingly entering into the medium-to-large capacity range for the effective, dust-free and almost silent unloading of coal, ores, phosphates, sulphur, fertilizers and other bulk material.


Silos are used for the storing and mixing of bulk goods. This includes cement, powdered limestone, plastic granulates and also animal feed. Generally, a silo is filled from above and emptied from below. When material is removed, the uniform flow and optimal distribution of the different filling layers is, therefore, important. This is achieved by screw conveyors and other mechanical equipment. They blend goods which are to be filled at different times. Slewing bearings made by LONGWEI  are used to achieve the continuous rotations necessary. Since they are durable and resistant to bulk goods, they are perfectly suited to be used in this way.

Material discharge rotary plate

Typical products

Lifting machine

Three row roller slewing ring bearing for Stacker Reclaimer Port Crane 3000t/h Bw Coal Reclaimer

The reclaimer is a lifting device for heaped material, which needs to be transported from a stockpile for further processing. The diverse selection of models ensures all kinds of storage locations are catered to. These can visually resemble bucket excavators. Since swivel movements have to be carried out to remove a stockpile, our slewing bearings of varied dimensions are also put to use here.

Typical products


Single row ball slewing bearing for Konecranes Hybrid Reach stacker

The stacker mines bulk material stored at the end of the conveyor line in a targeted and continuous manner. The stacker consists of a chassis, a feeder of the materials to be stacked, and a rotatable upper structure with the ejection trailer. Spoil piles coming from the conveyor belt can be filled again at another location with a spreader. Slewing bearings made by  LONGWEI ensure the chassis and the upper structure are reliably connected.

Scroll to Top