Conveyor Belt Maintenance Guide
Conveyor belts are the arteries of any crushing or processing operation. Proper maintenance prevents costly failures and extends belt life. This guide covers the essential maintenance tasks for conveyor belt systems.
Belt Tracking Adjustment
Belt mistracking causes spillage, premature wear and equipment damage. Proper tracking requires systematic adjustment.
Diagnosing Tracking Problems:
- Belt runs to one side at a specific point: Misalignment at that location
- Belt runs to one side throughout: Pulley alignment or tension issue
- Belt oscillates: Periodic variation in tension or alignment
Correcting Tracking:
- Adjust troughing idlers on the side the belt runs toward
- Small adjustments (3-5mm) and wait for belt to stabilize
- Check that all pulleys are square to the belt
- Verify belt is not overloaded on one side
- Check for material buildup on pulleys
Splice Inspection and Maintenance
The splice is the belt's weakest point. Regular inspection prevents unexpected failures.
What to Inspect:
- Separation between rubber and top plies
- Protruding fabric or cable edges
- Loose or missing mechanical fasteners
- Void or incomplete vulcanized joints
- Remaining rubber thickness at splice edges
Splice Life:
- Mechanical fasteners: 6-24 months
- Vulcanized splices: 3-10 years
- Steel cord splices: 5+ years
Conveyor Belt Maintenance — Tracking and Splicing
Pulley Lagging Care
Pulley lagging provides traction and protects the pulley shell from wear.
When to Replace Lagging:
- Remaining thickness below 50%
- Grooves worn smooth — traction lost
- Delamination from pulley body
- Damaged edges causing belt damage
Lagging Types:
- Plain rubber: Standard friction surface
- Ceramic: Maximum grip and wear life
- Herringbone: Grooved for water and debris resistance
Common Belt Repairs
Punctures and Small Holes:
- Use cold vulcanizing repair kits
- Clean damaged area thoroughly
- Apply patch extending 50mm beyond damage
- Apply pressure during cure time
Edge Damage:
- Clip damaged edges to prevent tearing
- Install edge repair strip
- Consider belt re-splice if damage is severe
Tears:
- Small (<50mm): Cold vulcanizing strip
- Medium (50-200mm): Full patch repair
- Large (>200mm): Professional repair or replacement
WSHT supplies conveyor belts, lagging and repair materials with technical support for proper installation and maintenance.
