... merits as following: 1) Adopting double cylindrical pins, an internationally advanced structure of anti- reverse to efficiently prevent motor's reverse in ... to avoid small animal into the inside of motor 3) At the bottom of motor, it has been fixed with a greaser ... : the new design can prevent oil from leaking inside Specifications: 1) Types: VHS160, VHS180, VHS200, VHS250, VHS280, VHS315, VHS355 2) ...