Another approach is called metal plating or coating. This technique involves depositing a layer of wear-resistant material onto the shaft surface through methods like electroplating or thermal spraying. This protective layer helps to minimize further wear and prolong the lifespan of the pulley shaft.

Furthermore, precision machining may be required to ensure the shaft's proper fit and alignment. This involves utilizing advanced tools and machinery to precisely shape and contour the shaft, ensuring it meets the required specifications and tolerances.

Overall, mechanical processing technology provides effective solutions for addressing the wear issues of crusher pulley shafts. By employing various techniques such as grinding, plating, and precision machining, the wear can be minimized, and the shaft can be restored to its optimal condition, ensuring the smooth operation of the crusher.