论述了轴承设计中应考虑的主要问题，根据掘进机刀具轴承的特殊使用工况要求，确定了刀具轴承的适合类型。并就刀具轴承设计和材料、工艺进行论述，针对刀具轴承的损伤原因、提出了设计上应注意的问题。

Major issues that should be taken into account during the design of bearings are expatiated. Proper types of bearings for cutters are determined in accordance with the special working conditions of the bearings for the cutters of TBM. The design, material and manufacturing process of the bearings of cutters are expounded. Countermeasures are proposed on basis of the cause analysis on the damages of the bearings of cutters.