At Xiamen JAMA Bearing Co., Ltd, we have established an after-sales service team which is responsible for keeping close contact with customers and dealing with relevant problems occurred after products sale. If roller chain can't work normally, please be rest assured that we have formulated solutions to cope with this problem. If the fault in the product is caused due to non-human damages or misuse, and more the product is still under warranty, then we are responsible for repairing the product or delivering a new one to you for free. If the fault is caused by improper use, then it would be different.

Up to now, JAMA has cooperated with many famous companies for ball & roller bearings. JAMA's car bearing is various in types and styles to meet the different needs of customers. While contributing to the cast iron pulley, chain sprocket can also sustain the characteristics of cast iron pulley. JAMA has rich experience in manufacturing high quality chain sprocket.

Striving for the realizing the great works of oil seal ring is our ultimate goal. Inquire now!