CouplingSuppliers 8 fonts coupling is design for encoder, the bushing made of high strength aluminium alloy, it it softness and not easy to break, the elastomer made of TPU, Anti-oil, Anti-oxidation. 8 fonts coupling can opperate from -30 to 70 degrees temperture. The bore size of the font coupling can be customized according to your requirement, if you want other bore size, please feel free to contact me or leave message when ordering. Backward installed ones can also be made. The 8 font couplings are widley used in many fileds, such as FR power adapter KK module, ball screw rod, stepper motor, encoder, scree printing machinem carving machine, servor motor, medical image diagnostic etc. We also provide parallel coupling, jaw coupling, single diaphragm step coupling, double diaphragms coupling, high rigidity coupling, 8 fonts coupling.CouplingSuppliers website:http://www.tjondgear.com/coupling/