Motorized Lab Jack Motorized Stage SPECIFICATION:   Item Number: PT-GD403 2  Travel Range: 100mm 3  Dimension of Platform: 180mm x 120mm 4  Drive Mechanism: Gear Motor with Grinding Screw 5 Travel Guide: Slide Rail 6  Stepper Motor (1.8): SST57D2121 - Stepping Motor with 2-Phases & 1.8 of Step Angle 7  Material Finish: Aluminum Alloy - Black-Anodized 8  Load Capacity: 50kgs 9  Weight: 10.5kgs Accuracy Specifications 1 Minimum Adjust Distance: 0.7m 2  Max Velocity: 8mm/sec 3  Repeatability: 5m 4  Absolute Accuracy: 15�¼m 5  Backlash: 4m 6  Lost Motion: ADVANTAGE: Have the industry leading level of the designer, can strictly grasp the product design and processing precision. We have experienced and skilled assembly master. Our products from the design concept, the processing technology, the assembly technology omni-directional control.Provide high quality products for users.