IR42x47x20 INA Needle Roller Bearing Inner Ring 42x47x20mm Open Outside diameter D: 59

Outside diameter D: 59

0433 in 77

available in both metric and imperial bore and thread sizes

For non-drive and Shimano cranks we also make MR24371 for the same oversized BB90 issue

IR42x47x20 INA Needle Roller Bearing Inner Ring 42x47x20mm Open Outside diameter D: 59The inner ring for needle roller bearings serves as an integral component within the intricate machinery of precision bearings. Crafted with meticulous attention to detail, this inner ring is designed to accommodate needle rollers, facilitating smooth and efficient rotation within the bearing assembly. Precision ground and hardened, the inner ring provides a robust foundation for the needle rollers, ensuring optimal load distribution and minimal