
JAMA is an experienced auto bearing Chinese manufacturer. Our company is a leader in product development and technical specifications. JAMA's ball & roller bearings series contains multiple sub-products. The structure of JAMAoil seal ring is checked through various methods of welding tests. These tests include bend testing shear stud, bolt tightening or torque test, magnetic particle inspection test for welding, ultrasonic test for welding, visual test for welding, etc. This product is attracting attention due to its durability. It can withstand hundreds of repeatability and reproducibility without any system failure.

our company aims to help customers reduce production costs and improve product quality. Welcome to visit our factory!