Install the adjusting ring and adjust the limit screws so that the rotating adjusting ring is relatively smooth. When the system is adjusted, it is necessary to remove the adjusting ring to ensure that the system is normal before machining. Rotate the spindle to find the highest point, and use an Allen wrench to rotate the adjusting screw of the adjusting ring to the point in the same direction as the highest point, so that the runout is less than 0.002mm. (Each adjustment amount is half of the maximum runout.
| Adjustment ring | D | D1 | Matching the main handle code | Matching wrench |
| QPE50 | 65 | 50 | QPA50-20 QPA50-25 QPA50-32Q PA50-BT30 QPA50-HSK40 QPA50-HSK50 | L Type 4*140 |
| QPE65 | 82 | 65 | QPA65-BT40 QPA65-BT50 QPA65-HSK63 QPA65-HSK80 | |
| QPE80 | 100 | 80 | QPA80-BT50 QPA80-HSK100 |
