RESF37 stainless steel helical gear reducer and KESA37 stainless steel helical bevel gear reducer are shaft-mounted gear units with TorqLoc compact keyless hollow shaft mounting system that combines interchangeable bronze bushings and a stainless steel clamping ring for mounting onto various sized solid shafts. They are available with NEMA C-face motor adapters, IEC adapters or as gearmotors. Other options include seals to provide IP69K protection and food-grade oil.