The accessories of roller bearings are mainly adapter sleeves. The taper design of the bearing ring is to facilitate installation and disassembly, improve efficiency and reduce mechanical maintenance costs. It is easy to install with the adapter sleeve, and easy to disassemble with the use of the withdrawal sleeve. The adapter sleeve is an accessory of the inner tapered bore bearing, which can ensure the stable operation of the support bearing. The use of withdrawal sleeves and adapter sleeves can achieve the effect of adjusting the internal clearance.