230.20.0414 Flange Light type thin Four point contact ball Slewing bearing for Machine gun mountings

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.

LONGWEI  slewing bearing is committed to the construction of the military industry and is suitable for a variety of complex geographical and working environments. The products have passed tensile strength, yield strength testing, anti-oxidation testing  etc. to ensure safety and smoothly operating. LONGWEI slewing bearing offers a variety of customized slewing bearings and relative precision gear assemblies to meet specific demands. LONGWEI slewing bearing provides customers with tailored designing and professional technical support.  

With unique coating treatment technology, LONGWEI brand is aim to apply for areas which requiring excellent corrosion fields. Our technology has been proven in main military applications. ITP and QC procedures are in line with the relevant technical requirements of government procurement. The complete QMS &Auditing by TPI enables LONGWEI slewing bearings to be prestigious in the military industry.

Products Description
Model Number:230.20.0414Brand namelongwei
Production Experience Since 2004 Applicable Industries:Military,Construction works , Energy & Mining, Food & Beverage
Specificationfrom 200-5000mmGear Options:without Gear
Material:50Mn/Customized Seals Type:exterior sealing or as requirement
Outside Diameter300 - 5000 mmCERTIFICATE:ISO9001:2008/SGS
Bore Diameter304 mmOutside Diameter518 mm
Operating tempereature: -30°C +70°CHardness: 207-262HB (slewing Bearing)
Product Name:Flange Light type thin Four point contact ball Slewing bearingService:OEM Service.Design Service
Net Weight : 23kgs Rolling element:Single row four point ball contact & Spacer
Warranty Period 1 yearTestingIn house or third party
Surface TreatmentZinc Plating, Blackening, Painting SizeStandard OR Customized
Height 56 mmH.S. Code848210900
Packaging Details1.Filling with rust-proof oil
2.packing with protective layers
3.Fixed in the plywood4.Packaging terms:Plywood case/ Pallet/Steel frame

Light type thin Four point contact ball Slewing bearing


The flange slewing bearing has the same structure with four points contact ball slewing bearing, but the weight is lighter; the outer or inner ring of the flanged slewing bearing has the “L” edge, like a flange, that's why we called it flange type bearing. Flange light slewing bearing ring is also used for some applications which has weight limit for the bearing, the weight for the flange type slewing ring is much lower than normal type. The materials of the flange slewing ring are mainly 50Mn, 42CrMo and C45.
We have professional engineers and we have about  20 years experience in slewing bearings. Our factory was introduced lean manufacturing to promote our quality of the flange slewing bearing ring. The MOQ of our flange light slewing bearing is 1 piece.
The flange slewing bearing rings has been widely used in many applications:


Longwei transmission slewing bearing co.,ltd is specialized in producing slewing bearing and slewing drive.

We can produce both standard and non-standard products, as meeting customers’ demand is our service principle.

We provide spot, generation processing, drawing processing, sample processing, free design and other services.

User Guide

  1. Before the product leaves factory, the raceway is filled with about 30% amount of grease. You must fill full the grease before use.
  2. Before the product leaves the factory, the clearance accuracy has been adjusted. It is not allowed to disassemble the product without our consent, so as to avoid unnecessary losses.
  • Production quality system

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


the structure of flange typeslewing bearing
HVMHVM Light Missile Launcher System ,starstreak launcher

About Longwei

Provide you with customized industry solutions

longwei factory

More than ten years of production experience, strict quality control can be the guarantee of the best solution in the industry.
China’s leading supplier of slewing bearings, its products have passed ISO 9001 and CAPE certification, and has a number of product patents.

The flexibility of our dialogue and approach with our clients is combined with responsive design and development innovation to ensure exceptional delivery.


Do you have any questions about our slewing bearing? Maybe you can find the answer below. If the answer below does not solve your problem, please contact us and our engineer will answer it for you.

1. Where is your slewing bearing manufactured?
Our slewing bearings are all manufactured in China. We not only have the ability to design and produce slewing bearings but the quality can also be guaranteed. At the same time, our slewing-bearing price is more favorable.

2. I don’t know which slewing bearing to use, can you choose for me?
Yes, of course, Each model has a parameter list on the website. You can choose the suitable slewing bearing according to these parameter lists. If you don’t know how to choose, you can get in touch with us and our engineers will work with you to choose the suitable product. We can also design a new slewing bearing solution for you according to your equipment.

3. Can I get your product catalog?
You can get our product catalog in the download or contact us, we will send the product catalog to you by email or other ways.

4. Can you customize products?
Yes, we can. Our engineers have very rich experience in slewing bearing design. On the customized slewing bearing page, you can see some special customized products designed by our engineers. These design solutions meet the special needs of many customers. Our engineers can also work with you to design a new slewing bearing.

5. Can you provide accessories?
Yes, we can provide matching spare parts such as motors, hydraulic motors, and encoders that are compatible with slewing bearings.

6. Can you provide a 3D model?
Yes. All our slewing bearings have 3D models, you can contact us to get them. At the same time, we can also provide CAD files and PDF files.

7. How long is your slewing bearing warranty period?
Our slewing bearing warranty time is 12 months. When you install, use, and store the slewing bearing, please refer to the slewing bearing instruction manual.

8. Can you choose the color of your slewing bearing?
Yes. Our slewing bearing is available in many colors. If you have special requirements, please tell our sales engineers, we are happy to provide services for you.


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