To attach an encoder shaft to another rotating shaft, a coupling device is needed. Because shaft run-out or endplay can result in excessive loads on encoder bearings, EPC recommends use of flexible couplings designed for encoder applications. EPC also offers magnetic couplings that can be used for temporary applications, or for attaching hollow bore or thru-bore encoders to large diameter shafts. The magnetic couplings are a perfect match for both the Model 260 and Model 25T. For easier centering on a shaft, a pilot hole is located in the center of the coupling. Over Shaft Magnet Holders easily positions magnet on the end of a shaft. For a 1/8" (0.125") shaft, use the Press In/On Magnet Holder. For use with Model 30M Encoder Module. Includes magnet. Press In/On Magnet Holder accurately positions magnet inside a 0.250" bore or on a 0.125" shaft. For use with Model 30M Encoder Module. Includes magnet. Installation Centering & Gapping Tool enables quick and easy installation of the Model 30M Encoder Module. Raw magnets for custom applications. For use with Model 30M Encoder Module.