The first steel ball grinding machine was manufactured from the 1949 Wafangdian Bearing Group Corp., Ltd. Production of China’s first steel ball began. Steel ball processing equipment and processing technology continuous improvement and innovation. In 1952, the former Soviet Union introduced automatic cold – header. Domestic design and development of manufacturing automatic upsetting machine, file the ball machine, ball crusher and grinding miller. 1980s, China introduced high-speed automatic cold heading machine, equipment for heating processing, cleaning equipment, eddy current testing equipment and steel ball processing production line from Germany, Japan and America. The innovation pace and technological progress of the steel ball equipment were promoted. The continuous improvement of steel ball processing technology and promote the steel ball quality stability.

At present, all the steel ball processing equipment in the domestic all produced domestically. The polishing &finishing manufacturing precision and comprehensive performance of the equipment meet the advanced level of international similar products. Machinable diameter of machinable steel ball is 0.5 ~ 200 mm. Load the ball between 200 and 1000 kg. The main shaft of the device is running radial beat and the end jump is 0.008 mm. Automatic pressurization system, ac variable frequency speed control system and linear rolling guideway technology is adopted. Ensure the performance and stability of the equipment. The quality level of the steel balls made by Japanese AKS is at a comparable level to the precision vibration and stability of steel ball with domestic equipment. Has been able to supplier for the world famous bearing company SKF, INA，KOYO，NTN ,TIMKEN and other high-precision steel balls.

Xinxiang sunrise NC equipment Limited. She can produce horizontal steel ball “light, grinding, lapping” full range processing equipment. The ball board is 400 ~ 950 mm in diameter. Nine species. The breed is nearly forty. To be the largest and product series is the most comprehensive of steel ball processing equipment manufacturing enterprises in China. The products are exported to the USA, Japan, Japan, Japan, Korea, Taiwan and other countries and regions. The equipment developed in recent years mainly has: 3M7466 Vertical Steel Ball Flashing Machine, 3M7980A Horizontal Steel Ball Flashing Machine. 3M7995 Horizontal Steel Ball Flashing Machine, 3M7166 Vertical Steel Ball Grinding Machine, 3M4680C Horizontal Steel Ball Grinding Machine, 3M7266 Horizontal Steel Ball Grinding Machine, 3ML4775 Horizontal Steel Ball Grinding Machine, 3M7780A / XX Horizontal Steel Ball Grinding Machine, 3M7790A，3M7795 / XX and 3M7790 / XX Horizontal For large size Steel Ball Grinding Machine, In particular, the horizontal l-type low-gravity 3M77 series adopts resin grinding wheel to replace the grinding mill. For a long time enjoyed a high reputation in the steel ball industry with high precision and stable quality.

With the extensive popularization and application of the technology. The volume and stable produce of G5 (low noise steel ball) is realized. In recent years, the horizontal 90,95 series of Flashing & grinding equipment have been developed mighty. Gearless driving, Constant pressure processing, frequency control, The whole bridge plate, The new technology, such as large ball loading and noise reduction, is used in the development of this kind of equipment. Successful promotion and recognition in the steel ball industry. Successful promotion and recognition in the steel ball industry. At the same time, it is the first to adopt AC variable frequency technology on the horizontal& Vertical steel ball equipment. The spindle speed and corresponding working pressure are smoothed in the process. Improved steel ball processing quality.

Anqing Machine Tool Co., Ltd. She has light, grinding, lapping processing equipment. 3M49，3M79’s series of steel ball flashing machine has unique design and manufacturing techniques. Good machining efficiency and reliability. 3M77 series of steel ball mill was successfully developed in 2008. The grating positioning and self – drive device are used. The positioning accuracy and accuracy of the equipment are guaranteed. Shanghai ChongMing machine tool factory makes grinding and processing series equipment. Especially in the 3M77 series of steel ball grinding machine has unique process technology. And with the German SMS company to joint development the steel ball finishing machine. And Export to Germany. Qiqihar machine tool plant and Jinan shunda machinery co. LTD made cold upsetting equipment.

The Japanese sole corporation in china has adopted the steel ball processing equipment produced, But you should see, development and reliability of steel ball high-speed cold header, And the relevant technical level of equipment and other aspects relative to foreign countries still have a big gap, There is also a need for continuous technological innovation. Meet the needs of the steel ball industry.

（作者：张永乾¹，吴朝阳²
1. 中国轴承工业协会技术委员会 滚动体专业委员会，河南 洛阳 471039
2. 常州光洋轴承有限公司，江苏 常州 213002）
（未完待续）