NBJINGYI 5,000 lb Weld-On Swivel Trailer Jack — 15" Lift, Side-Wind Handle, Black E-Coat

NBJINGYI’s 5,000 lb weld-on swivel trailer jack is a heavy-duty, corrosion-resistant jack that provides a 15-inch lift range, 360° swivel capability, and an ergonomic side-wind handle for easy trailer leveling and storage.

This weld-on pipe-mount jack is built for work — supporting trailers, RVs, boats, and farm equipment with a robust 5,000 lb support rating and 3,000 lb lifting capacity. Designed to weld directly to a trailer’s frame, it tucks parallel for travel, raises smoothly for hitching, and resists corrosion thanks to a black E-coat finish and zinc-plated internal parts. Whether you’re replacing a worn jack or fitting a new trailer, the NBJINGYI unit focuses on dependable performance and simple operation.

How much weight can this jack safely support and lift?

This unit is engineered to stabilize trailers up to 5,000 pounds and provide a lifting capability rated at 3,000 pounds. The ratings reflect its intended use for steady support and hitching tasks rather than continuous dynamic towing loads. Always verify your trailer’s tongue weight and distribute loads according to manufacturer recommendations.

• 5,000 lb support capacity for frame stabilization
• 3,000 lb rated lifting capacity for hitching and adjustment
• Weld-on installation secures the jack directly to the trailer frame

How does the 360° swivel pipe-mount design help during travel?

The swivel bracket rotates the jack fully so it can lie parallel to the trailer frame while driving, maximizing ground clearance and reducing exposure to road debris. A heavy-duty positive-lock pin secures the jack in the travel position to prevent accidental deployment. When you arrive, swing it out and use the side-wind handle to raise or lower the load quickly.

• Full 360° rotation for compact travel storage
• Positive-lock pin holds the jack securely in place
• Quick transition between travel and operating positions

What makes the lifting action smooth and easy to use?

The NBJINGYI jack uses internal gearing tuned for a smooth vertical action across its full 15-inch travel range, minimizing jerks and binding. The ergonomic side wind crank is shaped for comfortable one-handed operation, lowering physical strain during frequent use. No extra tools are required — just crank to raise or lower the trailer as needed.

• 15 inches of vertical travel for precise height adjustment
• Ergonomic side-wind handle for reduced effort
• Precision gearing delivers consistent, controlled movement

How durable is the jack in harsh weather and road conditions?

Durability is prioritized with a tough black E-coat finish that resists chips and corrosion, while key internal components receive zinc plating to slow rust formation. Those protective layers reduce maintenance and extend service life in salty or wet environments. Regular inspection and proper mounting further improve longevity.

• Black E-coat exterior for long-lasting corrosion resistance
• Zinc-plated internal parts to prevent internal rust
• Weld-on mount reduces movement that can wear protective coatings

Who is this for? The NBJINGYI 5,000 lb weld-on swivel trailer jack is aimed at owners of medium-duty trailers, utility haulers, boat trailers, and small RVs who need a reliable, low-maintenance jack that tucks away for travel and provides smooth, precise lift control. It’s a good choice for do-it-yourself installers, professional fleet operators, and anyone replacing a factory jack with a sturdier, corrosion-resistant welded mount solution. Always match the jack’s ratings to your trailer’s tongue weight and follow safe welding and installation practices.