Three row roller slewing bearing inner gear 133.45.2240 for NextGen Modular Crushing Plant – Mineral Resources

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.

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.

Three row roller slewing bearing has three seat rings, upper and lower and radial raceways are separated respectively, so that the load of each row of rollers can be accurately determined and can bear various loads at the same time. It is one of the four products with the largest bearing capacity. The axial and radial dimensions are large and the structure is firm. It is especially suitable for heavy machinery requiring larger diameter, such as bucket wheel excavator and wheel type lifting machine Heavy machinery, marine crane, ladle slewing and large tonnage truck crane and other machinery.

Products discription
Model Number:133.45.3150Brand namelongwei
Production Experience Since 2004 Applicable Industries:Deck crane
Feature:Multi-column, ROLLERGear Options:Internal Gear
Material:Bearing Steel/Customized Seals Type:Nitrile Rubber or as requirement
Load Direction:Axial BearingCERTIFICATE:ISO9001:2008/SGS
Bore Diameter2868 mmOutside Diameter3432mm
Operating tempereature: -30°C +70°CHardness: 55-62HRC
Product Name:Internal Gear Slewing Bearing 133.45.3150 Service:OEM Service.Design Service
Net Weight : 5000kgs Rolling element:Roller Bearings & Spacer
Warranty Period 1 yearTestingIn house or third party
separatedUnseparatedSizeStandard OR Customized
Height 270 mmH.S. Code848210900
Packaging Details1.Filling with rust-proof oil
2.packing with protective layers
3.Fixed in the plywood
4.Packaging terms:Plywood case/ Pallet/Steel frame
Product Type:Three Row Roller

Three row roller slewing bearing is an important transmission component. In order to achieve relative rotation, it needs to bear a lot of force during the operation. With the wide use of various mechanical equipment, three row roller slewing bearing is the most important part of the equipment. Essential accessories are widely used in various construction machinery, medical machinery and industrial equipment, and have been highly recognized. The external gear of light series slewing bearing is an essential product in three row roller slewing bearing. If the equipment is worn during operation, it can be lubricated between multiple parts to reduce friction and tear. It is better to stop the equipment and conduct detailed inspection to enhance the operation of the whole mechanical equipment. Meanwhile In order to prolong the service life of the three row roller slewing bearing in the machine, it is usually best to pay attention to the corrosion of the product to the corrosive product and take anti rust measures. Usually, clean the surface regularly and use the cleaning effect. It is better to keep the product surface dry at the same time, pay attention to the application of anti rust oil, if you encounter special circumstances, you can choose to use antirust oil. In fact, three row roller slewing bearing is a very good product. It is better not to touch it with hands when not in use, so as not to corrode the bracket.


Our Services & Strength

1.Raw material from reliable suppliers; 
2.Production process is in strict accordance with ISO9001 Quality Management System . 
3.Strict in-process quality control and 100% finished product inspection before delivery; 
4.Third party product inspections are acceptable upon customer request. 
5.Adoption of standardized product design process and APQP, PPAP, FEMA for application analysis.

  1. Manufacturer of producing bearing for about twenty years.
    7. Advanced mechanical equipment and strict quality control team.
    8. Efficient production speed and on-time delivery service.
    9. Accept standard and non-standard production.


How to Purchase Slewing Support, many new contacts do not know how to choose, want to buy or customize the slewing bearing but do not know which model to use, do not know how to do the initial selection. 

    Method 1   BY  slewing ring bearing selector  

    slewing ring bearing selector allows engineers and designers to easily search ‘s slewing bearings catalog by bearing type, gear type, external and internal dimensions, static loads, and other parameters. Results include the option to download PDF drawings.


 Longwei transmission   Slewing Bearing Co.,Ltd

Choose inch or metric, select an application from the drop-down menu, and specify one or all of the factors below. Required fields are indicated.

If needed ,you can also download our slewing ring design guide    downlaod     Slewing bearing selection   PDF  



Slewing Bearing Selection

 Company:                                Add.:

 Contact Person:                                    Dept.:

 Tel:                                   Fax:


 Shaft Position

Slewing Bearing Mounting Method


Horizontal □ Vertical □

       Seat type □     Suspended □

Tooth type:


       Speed (RPM):

External Tooth □       

 Positioning only□

Normal working speed:

Internal Tooth □   

Intermittent rotation □

Max speed:

Without Tooth □

Continuous rotation □


Load data

         Bearing load


Loading type





max. working load 

max. test load

e.g. 25% overload


Extreme load

e.g. shocks or

out of operation


Axial loads

parallel to axis of rotation





Radial loads

at right angle to axis of rotation (without gear loads)





Tilting moment generated by axial load 





Tilting moment generated by radial load





Final tilting moment





Driving Torque on Slewing Bearing [KN] 

 Normal:                     Max:

 No. of Driving Pinions:

 Position:    ° (distribution)

Slewing bearing type and dimension

Type: light type□   single row ball □     double row ball□     single row cross roller□     triple row cross roller□     


Dimension:   OD:     mm □     ID:      mm □     Height:   mm □

 For continuous rotation, variable and life requirements, please complete annex A.

 Annex A is enclosed:

 Remarks: (e.g. special working conditions / temperatures, required accuracies, bearing dimensions, inspection- or certification requirements, material tests etc.)


 Please fully complete this form. Incomplete information will delay our proposal.


  Tel: 86-516- 85588998    Fax: 86-516- 85819994          Email:

  Signature:                                                 date:


Appendix A

The percentage of working time and rotation speed under different load cases.

Slewing Ring Load Data

Load cases







rotation speed






































































Continuous operation:

The service life(L10) :  at average speed:          rpm, service life is at least:           /hour

Intermittent operation:

Working life needed:  at angle+/-      °, the least recycle number:      

Signature:                                        date:


Appendix B

Gear data

External tooth  □                        Internal tooth □            Involute tooth □

Tooth Data


Slewing ring tooth

  Pinion tooth

Module (m)



Number of teeth (z)



Pressure angle (α)




Helix angle (β)



Modification coefficient (x)



Coefficient of top clearance ©



Teeth width (b)



Precision grade (l)



Gear center distance is adjustable 

 yes  □              no    □

Please attach the drawing of pinion.


Other requirements 


Signature                                    date:



Method 2  : According to the catalog of slewing bearing products provided by our company and relevant calculation formulas, calculate on your own,Then discuss and confirm with our engineers。

  1. Determine the large load (axial load, radial load, overturning moment) that the slewing bearing is subjected to when it is in a static state according to the use environment. Use this large load as a static rating.
  2.  Determine the static safety factor based on the type of machine installed
  3. Refer to the slewing bearing catalogue of the extension slewing bearing to initially select the slewing bearing model and determine which formula is used to calculate the static reference loads Fa’ and M’.
  4. Calculate the static reference loads Fa’ and M’.。
  5. Find the static load-bearing curve corresponding to the slewing bearing of the selected model in the Slewing Bearing Product Catalogue, marked in the graph (Fa’, M’)
  6. Check if the coordinate point is within the static bearer authority.
  7. Check the bolt bearing capacity.
  8. Complete preliminary selection

 Method 3 : By the buyer‘s drawing :

For example : 

example drawing

Longwe Transmission  slewing bearing team is committed to keep the spirit of continuous improvement and focus our strategy of strict quality control standards, quick response, prompt delivery and low price.We look forward to working on all of our customers’ growing demands. Our ability to optimize the bearing design for your specific needs is unparalleled and we will assist you throughout the design, manufacturing and implementation process.

Products type

1.single – row four – point contact ball
2.single – row Cross roller
3.double row of different diameter ball
4.Three – row roller
5.double row ball
For Non-gear, External Gear, Internal Gear

Special services

1.slewing bearing design
2.Produce by your drawing
3.OEM service

Business type

manufacturer,trading company


1.ISO 9001:2008 certificate,12 years experience2.High qualified material,low MOQ,excellent quality,competitive prices,
professional advice
3. Standard and non standard are all acceptable
4. OEM available
5.Stronger loading capacity, Larger radial and axial force bearing ability
6.Independent R&D team
7.Strict quality control management
8.Exquisite technological standard
9.Sufficient stock
10.Excellent after sales service


50Mn/42CrMo or as your requirements


1.First lubricated, Second circled with plastic film,kraft paper,blue belt,then packaged inwooden case,last gathered in Wooden pallet.2 According to your requirements


Delivery time

1.For general product , our delivery time need only 5 days is enough (goods in stock).2.If you have special technical requirements or need additional processing,we first rder need only 45 ys, if that is roller continuous order, our delivery time only need 35 ys.


Application fields

Mine machine, port hoisting machine, port oil transfer equipment onshore and offshorecrane,excavator,concrete machine,paper machine, plastic and rubber machine, weavemachine, steel plant, electronic power plant, wind power generator, other construction

and industry machines or equipment.

We supplied high quality product & good service to every end user and valued distributors all over the world. We’ve enjoyed a very good reputation up to now.

Our manufacturing standard is according to machinery standard JB/T2300-2011, we also has been found the efficient Quality Management Systems(QMS) of ISO 9001:2015 and GB/T19001-2008. We devote ourselves to the R &D of customized slewing bearing with high precision,special purpose and requirements and has acquired certificate of China Classification Society .

If you have any questions, pls do not hesitate to contact us.



1: How to order?

Please refer to the help under the single payment.
2.What are the shipping methods?
Ocean shipment to the port close to your city; Air shipment to the airport close to your company; Door to door service by international express.
3.When can I get the price?
We usually quote within 12 hours after we get your inquiry. If urgent to get the price, please call us or tell us by email , we will regard your inquiry priority.
4.You are a trader or a manufacturer?

We are an industry and trade integration business, our factory located on Xuzhou City.
5.How about the payment terms?
We usually accept T/T or L/Cat sight . other terms also could be negotiated.
6.What is your minimum order?

It depends on what you are buying. Normally, our minimum order is 1pcs.
7.What is your delivery time?
If there are any parts in stock , our delivery time is only 3-7 days. If our standard model,the delivery time is around 25 days,if non-standard model,the delivery time is 38~45 days.


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