C3976MB Bearing Technical Specifications
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- Bore Diameter(d) 380mm
- Outer Diameter (D) 520mm
- Width(B) 106mm
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- Dynamic Load Rating (Cr) 2120kN
- Static Load Rating (Cor) 4000kN
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- Weight 65.5kg
The C3976MB C39 Series CARB Toroidal Roller Bearing is engineered for large bore and low-friction applications. With dimensions of 380mm bore diameter, 520mm outer diameter, and 106mm width, this medium-bore toroidal bearing delivers reliable, low-friction performance in demanding industrial environments. It boasts a dynamic load rating of 2120kN and static load rating of 4000kN, with the unique ability to bear bidirectional axial loads while compensating for misalignment without preload. This bearing is equipped with machined brass solid cage for enhanced operational stability and service life. The CARB toroidal roller bearing designation further optimizes its self-aligning capability and durability.
Ideal for use in: wind turbine gearboxes, large industrial pumps, paper mill machinery, industrial gearboxes, material handling systems, medium-sized mining equipment
Bearing Type
Main Dimensions
380mm × 520mm × 106mm
| Bearing Model | C3976MB width Cylindrical Bore | Inside diameter(I.D.) |
|---|---|---|
| ID | 380mm | Inside diameter(I.D.) |
| OD | 520mm | Outside diameter(O.D.) |
| B | 106mm | Width |
| rmin | 4mm | Minimum chamfer radius |
| Cr | 2120kN | Radial dynamic load rating |
| Cor | 4000kN | Radial static load rating |
| reference | 950r/min | Reference speed |
| limit | 1300r/min | Limiting speed |
| Mass | 65.5Kg | Weight |
Material
GCr15 Bearing Steel (Customizable materials: GCr15 Bearing Steel/GCr15SiMn/GCr18Mo/G20Cr2Ni4A)
Cage
Reinforced machined brass cage ( customizable on demand in steel, brass, machined brass, etc.)
Precision Rating
P0 (Customizable on demand in P0/P6/P5/P4 grades; higher precision for demanding applications)
Clearance
C3 clearance (customizable on demand in C0/C2/C3/C4/C5 specifications)
Brand
WJY / OEM Available
Origin
Quality Standard
Delivery Time
- For in-stock own-brand bearings, Dalian JinYu HuaYang guarantees shipment arrangement within 3–5 days after payment confirmation.
- For OEM/ODM orders, the production and delivery lead time for a full container typically ranges from 20–35 days (depending on order complexity).
Shipping Methods
Ocean Freight/Land Transport
Warranty
We provide 12-month warranty, extendable to 18 months via authorized JinYu distributors.
Pricing Information
Bearings prices vary by precision grade, raw material quality, and market dynamics. For customized quotes, please submit an inquiry via our contact form.