... Pushing,Rotating4.Power Source: Electrically5.Characteristic: Positioning precision, Safely self-locking, Heavy duty, Uniform lifting speed, small sizes, easy installation,low ... protection.6.Loading Duty: Static Loading: 3KN~ 80KN (per set) 7.accessory: motor,hand wheel,reducers,rubber Bellows,steel cover ... ,brake,trunnion base,limit switches,coupling,link shafting. self-locking linear actuator