... : Positioning precision,Safely self-locking,Heavy duty,Uniform lifting speed,small sizes,easy installation ... Electrical5.Characteristic: Positioning precision,Safely self-locking,Heavy duty,Uniform lifting speed,small sizes,easy installation,low ... noise,long life,security and environment protection.6.Loading Duty: Static Loading: 0.5 ton ~ 100 ton ... Industries JWSS11-T Worm Gear Linear Actuator