Tsubaki BB30-2K-K Cam Clutch 30mm I.D., 62mm O.D., 16mm Race Width

Inside Diameter = 30mm

The BB Series functions both as an one-way clutch and a bearing within its compact body, allowing you to use your space more effectively. Capable of transmitting larger torque than shell design roller clutches by arranging the number of cams between the inner and outer races.Compact Design Easy Installation Increased Torque Capacity Available with an oil seal