Type S200(B200) is a non bearing supported sprag type freewheel. Including: S203(B203) S204(B204) S205(B205) S206(B206) S207(B207) S208(S208) S209(B209) S210(B210) . 

The sprags run directly on the shaft provided by the user. Bearings are required to support axial and radial loads.

Lubrication and sealing must also be provided by the installation.

The housing bore to receive the outer race will be machined with a H7 tolerance.

A key will transmit the torque. The shaft on which the sprags run must have a surface hardness of HRc 60 to 62 for a 

finished depth of 0, 6 mm minimum. Core hardness should be HRc 35 to 45. Surface roughness must not exceed 22 CLA.

Maximum shaft taper 0, 01 mm per 50mm length. Concentricity between shaft and housing bore should be maintained 

within TIR 0, 05 mm. The preferred lubrication is oil. The design allows the use of most of the common lubricants used in 

power transmission including gear oils with EP additives.

When necessary grease lubrication is also possible.

Changzhou Suma Precision Machinery Co., Ltd(Changzhou Tianniu Clutch Factory)is a manufacturer specialized in Producing Various cam clutch, one way bearing, one way clutch, backstop clutch, overrunning clutch and other bearings with high technology. 

We are following "Best Quality, Best Price, Fast Delivery, Best Serves" to make all of our old and new customers satisfied. 

Our Advantages
1. Advanced producing equipment.
2. Strict requirement for the raw material
3. Complete&perfect process flow
4. Good quality of each batch of the product
5. Different grades of price for different quality

Pre-sale service:

We will delivery the goods in 10 days after your order is confirmed.

After sale service:

Our factory provide technical assistance to support every doubt during usage and maintenance. 

Q: Why do we choose your company?

A: We always insist quality first. We have our bearing factory, therefore we have advantage in quality control and price of one way clutch bearing.

Q:What is the delivery time?

A: Most of the bearing we have stock. For small quantity, we will arrange delivery within 15 days.

Q: What is your payment term?

A: Our payment term include L/C, T/T, Western Union, Paypal etc.

Q: Can you send bearing samples first?

A: Yes, we can send bearing samples of one way clutch bearing to check quality first.

If you have any needs,pls contact me at any time!