... order and promote delivery are accepted universal joint covers: 1,Model Number SH1302,OriginalNumber 3,Specification 30*874,Raw Material20Cr or 20CrMnTi5 ... : block, wing, delta) is used. Bolt-fastening mechanism and key-way are incorporated to the bearing and a precise circle is ... on its back. By receiving the torque through the key-way, even if a bolt is loosely tightened, the shearing stress ...