How to Repair Worn Hard Alloy Column Pins Shaft Sleeve of High Pressure Grinding Roll?

High pressure grinding roll is a key equipment in the cement industry for grinding clinker and other materials. The shaft sleeve and Hard Alloy Stud roller sleeve are important components of the roller press, and their wear and tear can affect the performance of the equipment. In this article, we will discuss how to repair the shaft sleeve and Carbide Button roller sleeve, as well as how to replace worn Carbide Pin.
Repairing Shaft Sleeve

1. Remove the shaft sleeve from the roller press by loosening the bolts that secure it in place.

2. Inspect the shaft sleeve for any signs of wear or damage. If there are any visible cracks or deformations, the sleeve will need to be replaced.

3. If the shaft sleeve is only slightly worn, it can be repaired by welding. Clean the surface of the shaft sleeve and apply welding material to fill in any gaps or worn areas.

4. Once the welding material has cooled, use a grinder to smooth out the surface of the shaft sleeve and ensure it is even.

5. Reinstall the repaired shaft sleeve back into the roller press and tighten the bolts securely.
Repairing Column Pin Roller Sleeve

1. Remove the column pin roller sleeve from the roller press by loosening the bolts that secure it in place.

2. Inspect the roller sleeve for any signs of wear or damage. If there are any visible cracks or deformations, the sleeve will need to be replaced.

3. If the roller sleeve is only slightly worn, it can be repaired by welding. Clean the surface of the roller sleeve and apply welding material to fill in any gaps or worn areas.

4. Once the welding material has cooled, use a grinder to smooth out the surface of the roller sleeve and ensure it is even.

5. Reinstall the repaired roller sleeve back into the roller press and tighten the bolts securely.
Replacing Hard Alloy Pin Stud

1. Remove the worn Hpgr Hard Alloy Pins from the roller press by using a hammer and chisel to break them apart.

2. Clean the area where the column pins were located to remove any debris or residue.

3. Measure the dimensions of the new hard alloy column pins and ensure they are the correct size for the roller press.

4. Insert the new hard alloy column pins into the roller press by hot shrinking and secure them in place.

5. Test the roller press to ensure the new column pins are securely in place and functioning properly.


Repairing the shaft sleeve and column pin roller sleeve, as well as replacing worn hard alloy column pins, are important maintenance tasks for high pressure roller presses. By following the steps outlined in this article, you can ensure that your equipment operates efficiently and effectively, leading to improved performance and longevity. Regular maintenance and repairs are essential for the smooth operation of the roller press and can help prevent costly downtime and repairs in the future.