成功设计出Y16型转向架，运行速度达到140km/h。随后生产出Y20

Successfully designed the Y16 bogie with a running speed of 140km/h. Subsequently, three new high-speed EMU bogies, Y20, Y24 and Y26, were produced. For the first time, France applied an air spring structure to a Y26 bogie, with a maximum operating speed of 180km/h. In the 1860s, the suspension of the Y30 bogie used a herringbone rubber stack positioning structure. At the same time, France successfully developed the Y27 and Y28 models, the test speed of both reached 230km/h. Based on the previous success, the Y23 bogie was born with a speed of 200km/h. It uses disc brakes and magnetic rail brakes as the basic braking device, and the frame adopts H-shaped welded structure. In the 1970s, France developed TGV high-speed trains and successfully invented Y229 bogies, Y231 power concentrated bogies, and Y237 bogies

The Y16 steering gear was successfully designed with a running speed of 140km/h. Then produced Y20, Y24, Y26 three new high-speed moving vehicle bogies. For the first time in France, air spring structures have been applied to the Y26 steering gear with a maximum operating speed of 180km/h. In the 1860s, a series of suspensions on the Y30 steering gear featured a human-shaped rubber stack positioning structure. At the same time, France successfully developed the Y27 and Y28, both of which ran at a speed of 230km/h. Based on previous success, the Y23 bogies, with a speed of 200km/h, use disc and magnetic rail brakes as the base brake device, and the structure is h-type welded. In the 1970s, France developed the TGV high-speed train, and successfully invented the Y229 steering gear, the Y231 power concentrated steering gear and the Y237 steering gear.

The Y16 bogie has been designed successfully, and the running speed has reached 140km / h. Then three kinds of new high-speed motor car bogies, Y20, y24 and y26, were produced. The air spring structure has been applied to y26 bogie for the first time in France, with the maximum running speed of 180km / h. In 1860's, the primary suspension of Y30 bogie adopted herringbone rubber pile positioning structure. At the same time, France has successfully developed Y27 and Y28 models, both of which have a test running speed of 230km / h. On the basis of previous success, Y23 bogie was born, with a speed of 200km / h. disc brake and magnetic rail brake were used as basic brake devices, and H-type welding structure was adopted for the frame. In the 1970s, France developed TGV high-speed train, and successfully invented y229 bogie, y231 power centralized bogie and y237 bogie<br>