QJ3944 Bearing Technical Specifications
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- Bore Diameter(d) 220mm
- Outer Diameter (D) 300mm
- Width(B) 60mm
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- Dynamic Load Rating (Cr) 221kN
- Static Load Rating (Cor) 364kN
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- Weight 13kg
Four Point Angular Contact Ball Bearings (Model: QJ3944 / 176944) are designed to handle combined radial and axial loads in both directions, providing high rigidity and precision. The bearing has a bore diameter of 220mm, outer diameter of 300mm, and a width of 60mm. The minimum fillet radius is 3mm. It offers a dynamic load capacity of 221kN and a static load capacity of 364kN. With a limiting speed of 950 r/min for grease lubrication and 1250 r/min for oil lubrication, and a weight of 13 kg, it suits various industrial setups. The mounting dimensions include a minimum inner ring diameter of 240mm, maximum outer ring diameter of 280mm, and maximum fillet radius of 2.5mm. Ideal for precision machine tools, small to medium-sized industrial gearboxes, this bearing ensures reliable operation in different machinery. Manufactured to high-quality standards, it delivers exceptional precision and durability under varying loads, supporting both radial and bidirectional axial load requirements. The manufacturer offers a Standard 12-month warranty extendable up to 18 months through authorized Jinyu distributors. OEM solutions available.
Bearing Type
Main Dimensions
220mm × 300mm × 60mm
| ID | 220 mm | Inside diameter(I.D.) |
|---|---|---|
| OD | 300 mm | Outside diameter(O.D.) |
| B | 60 mm | Width |
| rsmin | 3 mm | Minimum Fillet Radius |
| damin | 240 mm | Minimum mounting shaft diameter |
| Damax | 280 mm | Maximum mounting bore diameter |
| ramax | 2.5 mm | Maximum mounting chamfer radius |
| Grease speed | 950 r/min | Limiting speed (grease lubrication) |
| Oil speed | 1250 r/min | Limiting speed(oil lubrication) |
| Cr | 221 kN | Radial dynamic load rating |
| Cor | 364 kN | Radial static load rating |
| Mass | 13 Kg | Weight |
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.