When a dough sheeter generates noise, troubleshoot and fix it from simple to complex steps. Most abnormal noises can be quickly eliminated through basic adjustments and routine maintenance without full machine disassembly and major overhaul.
1. Basic Quick Inspection
Level the machine body: Check whether any of the four support feet are suspended in the air. Adjust the machine to a fully horizontal state and install 5 mm thick rubber vibration isolation pads at the bottom to block vibration transmission between the machine and floor, directly eliminating 80% of low-frequency vibration noise.
Follow proper load operation: Strictly ensure the dough feeding quantity per batch does not exceed the rated capacity of the equipment. Do not force hard, dry dough into the machine, which may cause high-pitched noise due to motor overload. Long-time no-load operation is prohibited; idling friction of components under no-load conditions will greatly increase noise.
Clear jammed foreign objects: Cut off power, open the roller guard, and remove dough residues and hard debris stuck in gaps to avoid friction noise caused by foreign objects squeezing the dough rollers.
2. Noise Reduction for Transmission Components
Apply lubrication: Add lubricating oil to bearings, gears and chains, 3–5 drops each time. For commercial models, replenish oil every 20 hours of operation to eliminate sharp noise caused by dry friction.
Replace worn parts: Inspect the transmission belt or chain. Replace them with new parts of identical specifications if cracks, elongation or slippage occur. Severely worn bearings and gears shall be replaced simultaneously to prevent impact noise from excessive component clearance.
Tighten loose fasteners: Tighten the fixing screws on the dough sheeter body and both ends of dough rollers one by one to eliminate resonance noise resulting from loose components.
3. Troubleshooting for Severe Faults
Sharp high-frequency noise from the running motor is most likely caused by worn motor bearings or displaced stator. Replace the motor bearings directly; for severe cases, install a brand-new low-noise pure copper motor to eradicate motor noise at the source.
Friction noise generated by unsynchronized rotation of dough rollers: recalibrate the parallelism of the two rollers and adjust the gaps at both ends to be fully consistent, avoiding abnormal noise from eccentric wear of rollers.
For commercial sites with long-term dough sheeter operation, operators shall wear noise-reducing earplugs to protect hearing from long-term noise damage.