21311 Spherical Roller Bearings 55*120*29mm

21311 Spherical roller bearings are constructed with the inner ring and ball assembly contained within an outer ring that has a spherical raceway ,It  is particularly suitable for applications where considerable shaft deflections or misalignment are to be expected. Additionally, the Spherical Roller Bearinghas the lowest friction of all rolling bearings, which enables the Spherical Roller Bearings to run cooler even at high speeds.

√ According to the customer's product market positioning, product quality and price adjustments to increase .

√ According to your market competitors' products to targeted production, if possible, increase your market share.

Part  Spherical roller bearings catalogue

Our Features: 

   *  Machining facility for special sizes of bearing,

   *  Free sample testing available,

   *  Low noise and no friction for bearing,

   *  High accuracy, High speed, 

   *  large in stock, quick delivery,

   *  Excellent and high quality control with our bearing,

   *  Small order accepted, 

   *  Customers' drawing or samples accepted.

Quality system:

In the process of manufacturing spherical roller bearings, we have 11 quality control points.

1. Batch test of material

2. Full-inspection of forging

3. Full-inspection of lathing

4. Batch test of Heat Treatment

5. Full-inspection of grinding dimension

6. Full-inspection of groove grinding

7. Full inspection of semi-finished products

8. Batch test of other components

9. Full-inspection of the dimension before assembling

10. Full-inspection of vibration

11. Batch test before leaving factory

 Real-time order tracking:

Whether your order is in the stages of production turner, heat treatment, grinding and assembling.We will pre-manufacturing process your feedback and other relevant information and pictures. Gives you an instant understanding of their order status and quality of the control.SIBIAI committed to improving the quality of services and products, whether past, present or future.If you are interested, please do not hesitate to contact me, you can send me E-MAIL, or directly visit our WEBSITE, SIBIAI worth your discovery ............