Different Types of Screw Jack For Motorized Jacks 1. Worm gear maching screw jack with load 1/4 ton - 100 tons, customizedPerfectr capacity 250 tons. 2. Worm gear ball screw jack with load 1 ton - 35 tons. 3. Bevel gear screw jack with load 2.5 ton - 50 tons. Different Versions of Screw Jack For Motorized Jacks 1.