Buyers Products Company PH50 50 Ton Air-Compensated Pintle Hook 6-Hole Mount, Powder-Coated Heavy-Duty

The Buyers Products PH50 50 Ton Air Compensated Pintle Hook is a heavy-duty, 6-hole bolt-on hitch that uses air cushioning to reduce shock and wear between a truck and a lunette drawbar for safer, smoother towing.

Designed for demanding commercial and off-road towing, the PH50 combines austempered ductile iron construction and a powder-coated finish to deliver long service life in harsh environments. The bolt-on, six-hole mounting pattern fits common heavy-truck installations and the spring-loaded locking arm secures lunette eyes from 2-3/8" to 3" I.D. The air-compensated design accepts an air chamber and plunger (sold separately) to cushion movement between hook and drawbar eye, reducing slack and improving stability during starts, stops and uneven terrain.

How does the air compensation improve towing performance?

The air chamber smooths the connection between the pintle hook and the drawbar eye, absorbing shock that would otherwise transfer to the hitch, trailer and vehicle. This reduces component wear and makes stop-and-go or off-road towing more controlled.

• Air cushion reduces sudden jolts and dampens trailer movement
• Helps prevent drawbar uncoupling during abrupt maneuvers
• Can be used without the plunger as a conventional fixed pintle hook

What load capacity and drawbar sizes does this pintle hook accept?

The PH50 is engineered for heavy-duty service and is rated to tow up to 100,000 lb (50 tons) for semi-trailer and similar applications when used as specified. It secures lunette eyes with an inner diameter range and supports a robust cross-section to match large drawbar hardware.

• Capacity suitable for semi-trailers, pup trailers, and heavy off-road loads
• Accepts lunette eyes 2-3/8" to 3" I.D.
• Compatible with drawbar cross-sections 1-1/4" to 1-5/8" diameter

What materials and finishes protect the hitch from corrosion and wear?

The PH50 is built from austempered ductile iron for high strength and fatigue resistance under repeated loading. A durable powder-coated finish shields the hitch from road salt, grime and weather to extend service life in fleet and municipal operations.

• Austempered ductile iron construction for structural durability
• Powder-coated surface resists corrosion and abrasion
• Spring-loaded locking arm holds lunette eye tightly to reduce wear

Are there special considerations for off-road or swivel drawbar use?

Off-road conditions increase dynamic forces on the connection. When using the PH50 off-road, reduce the rated load by the recommended 25% and pair with a swivel-type trailer drawbar to allow articulation and reduce stress on mounting components.

• Reduce allowable load by 25% for off-road towing
• Use swivel drawbar for improved articulation in rough terrain
• Air chamber and plunger (PH50ACMK) sold separately for full air-compensated performance

Who is this for? The Buyers Products PH50 is aimed at fleet managers, contractors, municipal services, and heavy-haul operators who need a rugged, bolt-on hitch that tames slack and shock on heavy trailers. It’s well suited to semi-trailer use, pup trailers, and demanding off-highway tasks when used with appropriate drawbar hardware and adherence to load reductions off-road. Choose the PH50 when durability, controlled towing dynamics, and compatibility with standard lunette eye sizes are priorities.