Nylon ball screw has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self lubricability, shock absorption and silencing can absorb the noise generated by steel ball impact, while reducing the noise value. Nylon ball screw has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self lubricability, shock absorption and silencing can absorb the noise generated by steel ball impact, while reducing the noise value.