Forklift

Forklift mast cylinders lift and tilt the forks. These cylinders operate at high pressure and need reliable seal performance. The bore quality directly affects the lifting capacity and service life. In my experience, even a 0.05mm deviation in bore roundness can cut seal life in half. Bore Geometry and Material Selection A typical mast cylinder has a 60-120mm bore through 500-1500mm of barrel. The material is usually cold-drawn seamless steel tube or forged steel. The surface finish requirement is Ra 0.8um for good seal life. ...