NBJINGYI 5000lb Heavy Duty Trailer Jack — 10" Lift, Pipe/ Square-Tube Weld-On Mount, Swivel with Side-Wind Handle

This trailer jack combines stout capacity with corrosion resistance and convenient operation for everyday towing, storage, and hitching tasks. Built with a welded square-tube style mount and a raw-steel bracket for a permanent attachment, it folds out of the way with a 360° rotating bracket and locking pin so you maintain ground clearance while underway. The unit’s black powder coat and zinc-plated components help resist road salt and moisture to extend service life.

How much weight can this jack safely support and lift?

The NBJINGYI jack is rated to support up to 5,000 pounds on the trailer frame while providing a lifting stroke of 10 inches. For lifting tasks the mechanism is specified at a 3,000 lb working lift capacity, suitable for most utility trailers and many light-to-medium RV applications.

• 5,000 lb support rating for mounted trailer stability
• 3,000 lb working lift capacity for raising tongue or load
• 10" lift range within an overall adjustable height span

What mounting and installation features does it include?

This jack arrives with a raw-steel weld-on bracket designed for secure attachment to square-tube or pipe-style trailer frames. The bracket locks the jack in place for permanent installation so it won’t shift under load, and the design accommodates weld-in installation by a qualified fabricator.

• Weld-on raw steel mounting bracket included for permanent fit
• Square-tube/pipe-compatible mounting footprint
• Weld installation recommended for maximum safety and stability

How does the swivel and handle design improve towing convenience?

The 360° swivel bracket lets the jack rotate flat against the trailer frame during transport, and a spring-loaded locking pin secures it in the stowed position. When deployed, the textured side-wind handle provides controlled, ergonomic turning for quick height adjustment without awkward positioning.

• Full 360° swivel with locking pin for travel clearance
• Side-wind handle with textured grip for easy operation
• Compact stows flat to avoid road obstruction and damage

What weather protection and durability features are included?

Exterior surfaces receive a black powder-coat finish paired with zinc-plated internal parts to resist corrosion from water, salt, and grime commonly encountered on the road. Heavy-gauge steel construction and quality welds provide long-term durability under repeated use and load cycles.

• Black powder-coat finish for long-lasting exterior protection
• Zinc-plated components reduce rust on moving parts
• Heavy steel tube and solid foot plate for stability on varied surfaces

Who is this for: The NBJINGYI Heavy Duty 5000LB Trailer Jack suits owners of utility trailers, equipment haulers, and many light-to-medium RVs who need a robust, permanently mounted jack with a practical swivel feature. It’s intended for users who want reliable support during loading and towing, weather-resistant materials, and the convenience of a side-wind handle and fold-away bracket. For safe service and optimal performance, have the supplied weld-on bracket installed by a qualified welder and confirm weight ratings against your trailer’s tongue load.