XB-12311
Cushion
SAF-Holland

This resilient rubber component serves as a dedicated cushion within the fifth-wheel coupling system, absorbing impact energy and mitigating shock transfer between the tractor and trailer. Its elastomeric construction provides dampening to reduce seat or mount fatigue, improving overall ride quality and prolonging the life of kingpin interfaces and mounting hardware. The cushion plays a critical role during frequent coupling and uncoupling cycles, where sudden loads and vibrations are routed through the coupling assembly. VMRS code 059-001-004 identifies its function in the vibration-damping subset of fifth-wheel hardware, and Category context 42801 places it in the rubber cushioning family used to protect mating surfaces and maintain alignment. Cross references are not listed, indicating compatibility with a range of standard fifth-wheel and mount configurations. Proper material selection and inspection ensure continued performance under varying thermal and load conditions, preserving coupling integrity and reducing maintenance costs. Cross references: none listed.