... , 20T, 30T, 40T, 50T, 100T 2. Configuration: Worm and worm gear, bearing, housing and lead screw 3. Function: Elevating, Lowering, Pulling, Pressing, Pushing ... small sizes, easy installation, low noise, long life, security and environment protection. 6. Loading Duty: Static Loading: 0.5 ton ... , metallurgy, construction, irrigation, chemical industry, health care, culture, health and others industries