... .tolerance:+/-0.0001 4.finish&Heat treatment worm gear for servo motor Specifications:1) Suitable for various automotive, electronic, telecommunications, mechanical products ... fineness instruments for inspection, EDM, high speed CNC machine, Sodick wire EDM, etc. 3)Quality control equipments: roundness meter, projector meter, microscope ... of over 1 million pieces per month. worm gear for servo motor