The wear resistance and service life of anti-slip rubber pads used with hydraulic jacks are key indicators of their safety and reliability. These pads are subjected to repeated compressive loading, shear forces, friction, and environmental exposure, making material durability and structural integrity essential to long-term performance.
1. Factors Influencing Wear Resistance
Material Composition
High-quality rubber formulations significantly enhance wear resistance. Natural rubber (NR) provides strong elasticity and tear resistance, while SBR and NBR improve abrasion, aging, and oil resistance. Carbon black or silica fillers reinforce rubber by increasing hardness and reducing surface abrasion.
Surface Texture
Textured surfaces—such as grid, chevron, or rib patterns—improve grip but also endure more frictional stress. Deep, well-designed grooves distribute stress more evenly, reducing localized wear and preventing early surface cracking.
Load Capacity and Pressure Distribution
Under heavy load, excessive compression can cause permanent deformation, tearing, or cracking. Pads with integrated steel or fiber reinforcement distribute loads more uniformly, reducing wear from concentrated stress points.
2. Environmental Impact on Durability
Exposure to Oils and Chemicals
Pads used in automotive or industrial settings often encounter lubricants or hydraulic oil. NBR-based pads provide superior resistance; other rubbers may soften, swell, or degrade, shortening service life.
Temperature Conditions
Extreme temperatures alter rubber elasticity. High heat accelerates oxidation, while low temperatures increase brittleness. EPDM or specially formulated cold-resistant rubber maintains durability across a broader temperature range.
UV and Ozone Degradation
Outdoor use exposes pads to sunlight and ozone, causing surface cracks and hardness changes. Anti-aging additives or protective coatings extend service life.
3. Mechanical Stress and Fatigue
Repeated compression and shear cycles generate internal heat and structural fatigue. Pads with insufficient thickness or low hardness wear down faster. Multi-layer composite structures and optimized hardness (typically 60–80 Shore A) help balance grip and durability.
4. Indicators of Wear and End-of-Life
Common signs that indicate replacement is needed include:
Visible cracks or tearing
Noticeable thinning or hardening
Loss of friction due to worn surface patterns
Permanent deformation (compression set)
Reduced stability during jack operation
Timely replacement prevents slipping accidents and protects underlying surfaces.
5. Methods to Extend Service Life
Choose pads made from high-quality rubber with reinforcement layers.
Avoid placing pads on rough, sharp, or uneven ground.
Keep pads clean and free from oil accumulation.
Store in cool, dry, shaded environments when not in use.
Replace pads showing early signs of hardness increase or surface cracking.
Consistent maintenance and proper usage can significantly prolong pad lifespan.
Conclusion
The wear resistance and service life of hydraulic jack anti-slip rubber pads depend on rubber formulation, structural reinforcement, operating conditions, and exposure to environmental elements. Selecting the right material and design, combined with proper handling and maintenance, ensures long-lasting performance and operational safety.
References
Gent, A. N. Engineering with Rubber: How to Design Rubber Components. Hanser Publishers.
ASTM D5963 – Standard Test Method for Rubber Property—Abrasion Resistance.
ISO 4649 – Rubber, Vulcanized or Thermoplastic—Determination of Abrasion Resistance.
Brown, R. Physical Testing of Rubber. Springer.
ASTM D2000 – Standard Classification System for Rubber Products in Automotive Applications.
