How to Troubleshoot Excessive Noise in a Pipe Bending Machine?

Abnormal noise is a distress signal from the equipment. Quickly locate the problem by type; most issues can be resolved independently.

1. Sharp hydraulic squeal

Causes: Low oil level (pump cavitation), clogged suction filter, emulsified oil, or incorrect viscosity.

Solutions: Add hydraulic oil to the mark; replace the suction filter; if the oil is white or black, completely change the oil and clean the oil tank.

2. Metal impact or gear noise

Causes: Worn gears/racks, damaged bearings, loose transmission bolts.

Solutions: Inspect the gear teeth; replace if severely worn; add grease; tighten all loose bolts, especially at the connection between the bend arm and the mold.

3. Pipeline vibration/humming noise

Causes: Loosely secured oil pipes, loose pipe clamps, equipment resonating with the ground.

Solutions: Add or tighten pipe clamps; adjust anchor bolts; install rubber vibration damping pads.

4. Motor/fan friction noise

Causes: Damaged fan blades, worn motor bearings, blocked cooling ducts.

Solutions: Replace fan blades or bearings; clean oil and dust from the motor shroud and heat sink.

5. Screaming from the mold to the pipe

Causes: Insufficient bending oil, insufficient gap in the anti-wrinkle die, debris accumulation on the mold surface

Solutions: Apply special bending oil; adjust the anti-wrinkle die gap to fit the pipe perfectly; clean the mold and remove burrs.

First, identify the type of noise → check the oil level and filter (most common causes) → compare the results under no-load conditions → address the specific issue. Early detection and resolution prevent minor problems from escalating into major shutdowns.