How was the first set of domestically produced bearings in modern China born?

The birth of the first set of domestically produced bearings in modern China. In early 1937, Wang Ruibao and Ma Genbao brought "1511" bearing inner and outer rings, cages, steel balls and other samples from Wuxi to Qin Fuxing hardware stall owner Qin Furong, and proposed the idea of jointly manufacturing bearings. Qin Furong saw that the sample was similar to the Japanese product NSK, and heard from Wang and Ma that the cost of steel rings forged from railway steel was only one-third of that of Japanese products. He thought it was profitable, so he made a steel ring in Mantingfang. Qin Fuxing Machinery Factory was opened at No. 48, "Yueguili", Zhilong, with Wang Ruibao and Ma Genbao serving as technical guidance.

The equipment at that time was only two belt lathes, two foot-operated punch presses, and a drilling machine. The lathes were also used as grinders. In addition to the imported steel balls, the ferrules are forged by Gaoshun Tai Iron Shop. The material is railway steel and quenched with sodium hydride. The retainer is made of iron sheet and is blued with potassium nitrate. At the same time, plug gauges and steel tapes are used as measuring tools. It is the first domestically produced set in Shanghai. "1308" double row self-aligning ball bearing was born under such simple conditions. This is also the first set of domestic bearings in China, and the product brand is SRF.

Qin Fuxing Hardware Shaft Collar Iron Factory From 1937 to 1945, there were more than ten workshops including Qin Fuxing Hardware, Shanghai Jinchang Iron Factory, Rongtai New Machinery Factory, Qin Fuxing Machinery Factory, Jinxing Iron Factory, Yuanxingchang Machinery Factory, Jincheng Machinery Factory, etc. Started manufacturing bearings, thus laying the foundation for Shanghai's national bearing production. China's bearings have gone through a long history, but there is still a long way to go in becoming bigger and stronger.