The roundness meter is a measuring tool that uses the rotary axis method to measure the roundness error of the workpiece. The rotation accuracy of the precision shaft system of the roundness meter can reach 0.025 microns. Using the error separation method, the electronic computer is used to automatically compensate the systematic error of the precision shaft system, and the multiple measurement method is used to reduce the accidental error, which can increase the measurement accuracy to 0.005 Microns.
Kunshan Five-Pointed Star Bearing Co., Ltd is the branch of Red Star Bearing Factory (Shanghai Lu Hong Bearing Factory), moved to Kunshan officially and changed its name in July 2017. There are 60 years of professional bearing production history. The company has developed on the basis of more than 20 excellent technicians and other experienced engineers. While inheriting the advantages of technology, it also shoulders the responsibility to carry forward the brand. The factory was established in 1958, known as "Red Star" brand bearings, and won the recognition in domestic and international bearing industry. The company mainly produces wheel hub bearings and hub assembly, as well as various non-standard bearings. Our main series are for VW, Audi, Mercedes-Benz car, and we have also been developing Honda, Toyota, GM, Volvo, Hyundai, Kia series and more. The bearings are widely exported to Europe, North America, Southeast Asia and etc. Nowadays “Five-pointed Star” treats “innovation and excellence”, “quality and integrity”, “customer satisfaction” and “eco-friendly and caring worker” as the business philosophy, the life, the goal and the responsibility. We are committed to create the five-pointed star bearing into a century of national enterprises!
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