Clutch Release Bearing B21

The Clutch Release Bearing B21 utilizes a double-row angular contact ball bearing architecture. Its symmetrical raceway layout optimizes axial load distribution, significantly enhancing structural stability under high-torque conditions. The bearing body is constructed of high-strength chromium alloy steel and undergoes a special hardening treatment. Its precision-ground raceways and reinforced rolling elements ensure wear resistance and fatigue resistance. Its integrated self-lubricating system utilizes a high-temperature stable grease, coupled with radial-axial composite sealing technology to effectively isolate external contaminants and ensure long-lasting lubrication performance in extreme temperature and high-load environments. A multi-layered vibration damping pad attached to the outer ring absorbs medium- and high-frequency vibrations generated by the transmission system, reducing clutch operating noise and impact damage to associated components.

This bearing is compatible with both diaphragm spring and coil spring clutch systems. Its floating cage design dynamically compensates for assembly tolerances and thermal deformation, meeting the diverse requirements of passenger cars, commercial vehicles, and performance vehicles. Standardized bench testing has proven that it maintains stable axial clearance control and sealing integrity under demanding conditions such as continuous heavy-load operation and frequent clutching. Practical application performance confirms that the B21 effectively suppresses shift vibration, provides linear pedal feedback, and significantly extends clutch system life. The manufacturing process adheres to international quality management systems and meets technical specifications for both original equipment and aftermarket replacements, providing a highly reliable solution for powertrain systems.