... of the most famous stepper motor shaft manufacturers and suppliers in China, providing with stepper motor shaft ISO free sample, welcome to ... low price, advanced, durable, easy-maintainable and latest-design bulk stepper motor axis, stepper motor axle from our factory, and also welcome to check ... customer's requirements. 2 Diameter 0.3-17mm, tolerance: +/-0.001mm 3 Roundness 0.001mm 4 Roughness Ra0.04 ...