1979年南口机车车辆机械工厂从国外引进的货车197726型圆锥滚动轴承生产线投产后,试制出的第一批112套轴承,装在齐齐哈尔车辆厂生产的13辆新造敞车上,编成固定车组运用在呼和浩特铁路局管内包头至白云鄂博线上,至今仍在做着长期运用考验。南口工厂货车滚动轴承生产基地的建成投产,奠定了我国货车轴承化的基础。与此 In 1979, the first batch of 112 sets of bearings trial-produced after the 197712 cone roller bearing production line imported from abroad was put on the 13 new-made gondola cars manufactured by Qiqihar Vehicle Factory and compiled into a fixed car group for use in Hohhot Railway Administration Baotou to Baiyun Ebo line, is still doing a long-term use of the test. Nankou factory truck rolling bearings production base put into operation, laid the foundation for our truck bearing. With this