Jintai self-lubricating bearing factory Introduction Gear shaft wear is mainly due to the shaft and the support of the needle between the collision wear, so that the shaft diameter becomes smaller. If it is subtle wear, you can add a layer of hard chrome to increase the diameter of this part of the axis scale, so that the axis is amended. If the shaft wears tough, it should be 45 steel or 40Cr steel from scratch, shaft rough by the rough, fine car, the bearing parts to heat treatment, hardness HRC60-65, and then by grinding, so that the bearing surface roughness Ra Greater than 0.32μm; roundness and cylindrical degree of tolerance of 0.005mm; with the gear parts by H7 / h6, the surface roughness Ra should not be greater than 0.63μm.
