Replacement Ball Bearing that fits several Servis Rhino Finish Mower and Rotary Cutter Gearboxes, replaces code 00563700. This bearings measures 40mm id X 80mm od X 18mm thick. Bearing specifications: 40mm x 80mm x 18mm Fits the following models: 148 160 172 EC60 EC72 FS15 GK6072 RDM7 RDM8 RDM9 SE4 SE42 SE5 SE6 SE10-4A SE15-4A SE8 RC5 TS12 We sell all of the replacement parts for most rotary cutters. If you don't see the parts you need listed please contact us we would love to earn your business. We are listing new items frequently so please check our store often. We stock a wide variety of replacement parts for Agricultural Equipment please contact us if you have any questions or if you would like more information.