退卸套主要用于将圆锥孔轴承固定在阶梯轴的圆柱型轴颈上。 退卸套被压进靠在轴肩或类似固定装置的轴承内圈与轴之间。 可使用螺母或端板来固定退卸套。 可以使用带适当锁定装置的 KM 或 HM 锁定螺母（需要键槽的锁定螺母）。广泛使用于纺织、轻工、造纸、冶金、皮带运输及输送设备等行业。退卸套中大型号带有油道和油槽，拆卸时注油便于拆卸，亦可用液压螺母拆卸。 Withdrawal sleeve mainly used to fix the tapered bore bearing on the cylindrical journal of the stepped shaft. It is pressed between the bearing inner ring and the shaft leaning against the shaft shoulder or similar fixing device. Nuts or end plates can be used to fix the withdrawal use KM or HM lock nuts with appropriate locking devices (lock nuts that require keyway). Withdrawal sleeve is widely used in textile, light industry, papermaking, metallurgy, belt transportation and conveying equipment industries. The large and medium-sized withdrawal sleeves are equipped with oil passages and oil grooves, which are easy to disassemble by filling oil during disassembly, and can also be disassembled by hydraulic nuts.