弄清飞轮滚键的原因，就可防患于未然。滚键的主要原因及防止措施如下：①飞轮螺母未上紧。应在敲击飞轮边缘的同时紧固螺母，力量不足时可接长扳手手柄。上紧后应将锁紧垫片锁好。不能怕以后飞轮难卸而故意不拧紧。②螺母假紧固。长期使用后，锥颈直径变小，飞轮锥孔变大... To understand the reasons for the flywheel rolling keys, you can take preventive measures. The main reason for rolling keys and preventive measures are as follows: ① flywheel nut is not tight. The nut should be tightened at the same time as the edge of the flywheel, and the wrench handle can be accessed when the power is low. Tighten the lock washer after tightening. Can not be afraid after the flywheel difficult to unload and deliberately not tighten. ② nut fake fastening. Long-term use, tapered neck diameter becomes smaller, flywheel tapered bore becomes larger ...