Quick Lifting Screw Jack Gearboxes have same sizes as T Miter Gearboxes. Means, same center distance, making them an ideal choice for complete lifting systems. These improvements will require a less in human and material resources, also save much cost and time. These Bevel Gear Jacks with ball screw and trapezoidal screws offer higher efficiency, higher lifting speed, higher duty cycle and longer lifespan than Worm Gear Screw Jacks.