Coolant Pump Troubleshooting: Pressure and Flow Issues
Problem Description A coolant pump that can’t maintain pressure makes deep hole drilling impossible. I’ve had jobs where the pump dropped from 80 bar to 40 bar mid-cycle and the chips stopped flowing. The drill packed up and snapped within 10 seconds of the pressure drop. Pump problems show up in three ways: low pressure at the outlet, fluctuating pressure during operation, or no pressure at all. Each pattern points to a different root cause. I follow a systematic approach rather than guessing. ...