Ultra precision plastic ball in the automobile industry uses a lot of, the common production methods for the manufacture of plastic ball can only be used in toys, decorative products, because only need to look beautiful and there is no requirement for plastic ball diameter tolerance, so production is relatively easy, the product color blending and production guarantee the stability of the machine can produce qualified products, and precision plastic ball after injection the blank plastic ball, but also the semifinished plastic ball were deep processing, the accuracy of the blank plastic ball to do best, diameter tolerance requirements in positive and negative 0.01mm, so simple manufacturing technology to produce not super precision plastic ball. Ultra precision plastic ball processing equipment mainly grinding ball and fine mill two, grinding ball mill is mainly for rough grinding, precision grinding mill is the plastic rough ball, precision plastic ball production cycle depends on the plastic raw materials, usually PA (nylon) plastic ball grinding cycle is the longest, 24 hours a day can be processed 0.10mm, PP plastic ball 24 hours a day can be processed 0.20mm, so the nylon plastic ball in all solid plastic ball China is difficult, the highest price.