Basic Conveyor Belt Maintenance Guide

Daily Inspection (Quick Checks)

These should be done every day:

1. Belt Condition

   • Check for tears, wear, flattening, or waviness.

   • If the belt drifts to one side → alignment adjustment is needed.

2. Belt Surface Cleanliness

   • Dust, grease, or debris can cause:

     • Slippage

     • Reduced belt lifespan

     • Increased motor load

3. Abnormal Noise

   • Clicking, whistling, or vibration may indicate issues with:

     • Rollers

     • Bearings

     • Motor or drive chain

Weekly Maintenance

1. Full Cleaning

   • Clean the belt with a damp cloth or cleaning agents compatible with its material (PU / PVC / Rubber).

   • Avoid thinner or gasoline.

2. Lubrication of Mechanical Parts

   • Grease bearings, bushings, and drive chains with appropriate grease.

   • Oil any parts according to the machine manual.

3. Belt Tension Adjustment

   • Too tight → motor strain

   • Too loose → slippage and improper movement

   • Ideal: belt should have 2–3 cm play in the middle.

Monthly Maintenance

1. Roller Inspection

   • Rotate front and rear rollers; they should move freely without sticking.

   • Grinding or squeaking → requires greasing or replacement.

2. Alignment (Tracking)

   • The belt must move exactly centered on the rollers.

   • Adjust front or rear roller screws slightly (¼ turn) based on deviation direction.

3. Edge Inspection

   • Worn edges indicate misalignment or incorrect tension.

Quarterly Maintenance (Every 3 Months)

1. Motor and Gearbox Check

   • Abnormal noise → insufficient grease or gear issue

   • Touch motor after operation; it should not be excessively hot

2. Full Fastener Check

   • Tighten screws, bases, frame, and guards

   • Excessive vibration can tear the belt or damage the motor

3. Electrical Check

   • Inspect cables, sensors, PLC, control panel, and loose connections

Belt Longevity Tips

1. Prevent Sharp Objects

   • Avoid dropping sharp or metallic items on the belt; even small objects can cause linear tears

2. Avoid Oil and Solvents

   • Most PVC and PU belts are sensitive to oil/solvents

   • In oily environments, use oil-resistant belts

3. Dust Protection

   • Use a lightweight polycarbonate cover in production areas to double belt life

Special Notes for Jet Printer Conveyor Belts (TIJ / CIJ)

1. Maintain Constant Height

   • Even a 2–3 mm difference affects print quality

2. Keep Belt Speed Constant

   • Vibration or speed changes → ink spreading, misaligned or double printing

3. Clean and Smooth Surface

   • Any stain or bump → vibration under the printhead → reduced print quality

4. Belt Must Operate Without Slipping

   • Slippage causes misalignment with photocells and printing errors