High-speed railway bearing anti-attrition structure

The utility model discloses an anti-attrition structure of a high-speed railway bearing. The anti-attrition structure comprises a plastic steel space ring, a bearing inner ring and a rear baffle, theplastic steel space ring is of a Z-shaped structure and is arranged between the bearing inner ring and the rear baffle, the upper bent inner ring surface of the Z-shaped structure is a space ring andrear baffle matching surface, and the lower bent inner ring surface of the Z-shaped structure is a space ring and bearing inner ring V-shaped groove matching surface; a V-shaped groove is formed in the inner diameter surface of the bearing inner ring; one V-shaped surface of the V-shaped groove is in interference fit with the plastic steel space ring; a step shaft is machined on the end face, making contact with the bearing inner ring, of the rear baffle, and the outer diameter of the step shaft is in interference fit with the plastic steel space ring. The bearing is simple in structural design and convenient to instal