... and OEM service offered1. RC series helical gear motor helical gear unit helical gear box own rational design, compact construction, ... of gearsaccurate grinding, 6~5 GradeLubricating oilGB L-CKC220-460, Shell Omala220-460Heat treatmenttempering, cementiting, quenching, etc.Efficiency94 ... ,ZWZ or other brands requested, NSK…..Brand of oil sealNAK--- Taiwan or other brands requested ModelShaft Dia ...