... standard)1-2000-60-600mm20°, 25° or according to the customer's requirment.Right or LeftGB7, GB 6, GB 5, ... worm shft material can be 40Cr, 45#, 42CrMo etc.or according to the customer's requirements 2. The worm ... be Brass, CuSn12Ni, QAL10-4,QA15, PA46 etc. or according to the customer's requirements. working shop:manufacture machine ... radial runout: worm wheel gear for Golf car or electronic wheelchair