Troubleshooting of Overheating & Vibration Fault for 200T H-Frame Servo Punch Press Main Motor, Production Recovery

After-Sales Service Press Release: Troubleshooting of Overheating & Vibration Fault for 200T H-Frame Servo Punch Press Main Motor, Production Recovery and Long-Term Operation Parameter Optimization

Our after-sales engineering team received an emergency service call from an automotive component manufacturer in Jiangsu. The customer’s 200T H-frame servo punch press suffered abnormal main motor overheating and periodic vibration during continuous stamping of thick steel brackets. The machine triggered thermal protection shutdown repeatedly, resulting in 12 hours of production downtime. Our engineers arrived on-site within 4 hours, completed inspection, disassembly and parameter calibration, and restored stable operation. Root causes included aging cooling fan and loose coupling bolt, aggravated by continuous high-load working conditions. We optimized operating parameters and provided maintenance suggestions to avoid recurring failures.

Equipment Operating Data Table

Press Release Q&A

Q1: What directly triggered the thermal protection shutdown of the 200T servo punch press? A1: The cooling fan blade was worn and blocked, reducing air flow. Meanwhile, loose coupling bolts caused eccentric vibration, increasing motor load and rapidly rising temperature, which activated thermal protection.

Q2: How long did the whole on-site repair process take? A2: On-site inspection, component replacement, dynamic balancing test and parameter verification took about 3.5 hours.

Q3: Will this fault cause permanent damage to the servo motor? A3: In this case, shutdown was triggered before permanent winding burnout. Long-term repeated overheating will damage insulation and lead to motor scrap.

Q4: What material was being stamped when the fault occurred? A4: 6mm thick Q355 steel automotive mounting brackets.

Q5: Can the equipment run at maximum stamping speed continuously after maintenance? A5: Yes, but we recommend adding hourly temperature checks under long-duration high-load stamping.

Q6: What preventive maintenance items are recommended for servo punch main motors? A6: Quarterly fan inspection, coupling tightening check, vibration test and grease replenishment for bearings.