I. Four situations requiring immediate replacement:
1. Surface damage: Through-cracks, worn-out tooth surfaces, or blistering and peeling of the red rubber layer.
2. Functional failure: Continuous slippage, abnormal vibration, or inability to adjust tension.
3. Structural deformation: Thickness reduction exceeding 30% (e.g., a 30mm belt less than 21mm).
4. Environmental corrosion: Contact with strong acids/alkalis leading to hardening or embrittlement.
II. Three key factors for extending lifespan:
1. Regular maintenance: Clean the surface and check tension monthly.
2. Environmental control: Avoid direct sunlight and contact with oil.
3. Load matching: Select the thickness according to actual needs (7.5-10mm for light loads, 20-30mm for heavy loads).
