With the booming growth of highway trunk-line logistics and drop-and-hook transport, the safety and reliability of trailer connection components have become critical to the operational safety of long-haul freight. As the core component connecting the tractor unit to the semi-trailer, the fifth wheel coupling (often referred to as the "turntable" or "fifth wheel") is a key procurement item for fleet operators and trailer manufacturers.
The fifth wheel coupling performs vital functions-including towing, load-bearing, and steering-by utilizing a locking mechanism that engages with the trailer's kingpin to secure the connection and ensure effective power transmission across the vehicle combination. Mainstream market offerings include the "50#" (standard-load) and "90#" (heavy-load) models, available in both fixed and sliding (adjustable) configurations to suit diverse operational needs, such as general cargo, "Green Channel" (fresh produce) transport, and oversized cargo hauling. These products are manufactured from high-strength cast steel; the locking mechanism is heat-treated for enhanced durability, and the dual-safety locking system ensures a secure engagement. They offer superior impact and wear resistance, providing a higher safety margin during cornering and braking. Additionally, the locking block and wear plate are individually replaceable, facilitating routine maintenance and reducing repair costs.
Based in a major production hub for trailer components, our company manufactures and tests fifth wheels in strict accordance with industry standards, ensuring consistent quality and ample stock availability. We provide both bulk supply and smaller replenishment orders to trailer modification facilities and logistics fleets, safeguarding the safety of long-haul logistics operations through reliable product quality and comprehensive after-sales service.
