Pneumatic assembly device for steel-backed bearing

The utility model discloses a pneumatic assembly device for a steel-backed bearing, which comprises an upper die holder and a lower die holder, a lower positioning seat is fixed on the lower die holder, a lower conical boss is arranged on the lower positioning seat, and a lower positioning pin is fixed at the top end of the lower conical boss; an upper positioning seat is fixed below the upper die holder, an upper conical boss is arranged below the upper positioning seat, an upper positioning shaft is fixed at the lower end of the upper conical boss, and the upper positioning shaft is aligned with the lower positioning pin; an air cylinder connector is installed on the upper die base. According to the utility model, a part hole is ensured to be coaxial with the center of the steel backing bearing, the air inlet pressure of the air cylinder provided with the air source processor is stable, the feeding is stable, the steel backing press-fitting quality is ensured, the safety coefficient is high, the operation o