PK-12057
Air Cylinder
SAF-Holland

This air cylinder is a critical actuator within Fifth Wheel systems, designed to convert compressed air power into precise linear motion for locking and releasing the towing interface. The component is identified within the Fifth Wheel family, underscoring its role in controlling the mandatory engagement of the upper towing surface with the trailer kingpin. Precision engineering ensures dependable cycling under heavy loads, contributing to smooth docking and predictable disengagement during disconnect procedures. The air-driven mechanism reduces operator effort, enhances safety during coupling and uncoupling, and supports consistent engagement heights across a fleet. The unit is compatible with standard fifth-wheel couplings used on heavy tractors, and maintenance considerations emphasize seals, lubrication, and pressure regulation to preserve performance. VMRS 059-001-002 positions it within the air cylinder subset of fifth-wheel components, while category 42517 confirms its integration into the fifth-wheel family. Cross references are not listed, but this cylinder is essential for reliable, repeatable trailer connections on long-haul operations.