Tronair 50J25178 – Columbus Jack 10-Ton Tripod Jack
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The Columbus Jack 50J25178 is a 10-Ton (20,000 lb) hydraulic aircraft tripod jack engineered to lift aircraft from the forward fuselage or main wing jacking points during maintenance, inspections, and ground operations. With a 36" (91.4 cm) closed height and 80" (203.2 cm) maximum extended height, it accommodates a range of aircraft fuselage and wing jacking point heights. CE-marked for compliance with European aviation safety standards.
Standard Features
- Hand pump with built-in pressure relief valve
- Threaded rams with improved handwheel-style safety nut
- Quick-rising center extension for rapid initial lift
- Easy-access filler/breather cap
- Heavy-duty wheels for easy maneuverability
- Hydraulic fluid: MIL-PRF-5606
- ¾" (2 cm) spherical radius cup jack pad
- CE marked
- Durable powder-coat finish (Tronair Blue)
Technical Specifications
- Rated Capacity: 20,000 lbs (9072 kg)
- Operating Temperature: −4°F to 122°F (−20°C to 50°C)
- Pressure Relief Setting: 2,500 + 250/−0 PSIG (172.4 + 17.2/−0 bar)
- Minimum Closed Height: 36" (91.4 cm)
- Maximum Height Obtainable: 80" (203.2 cm)
- Hydraulic Fluid: MIL-PRF-5606
- Jack Pad: ¾" (2 cm) spherical radius cup
- Finish: Durable powder coat (Tronair Blue)
Safety Features
- Ram Lock Nut: Prevents the lowering of the ram. The ram lock nut must be lowered as the aircraft is being lifted. Ram lock nuts must be kept within 2" of the stop while raising the aircraft.
- Lock Nut Retention Ring: Prevents the lock nut from being unscrewed from the second stage.
- Pressure Relief Valve: Prevents overload during raising operations.
Aircraft Applications
The Columbus Jack 50J25178 is designed for use with a range of commercial, regional, and business aviation aircraft requiring 10-Ton tripod jack support. Specific aircraft model compatibility is defined in the Columbus Jack Aircraft Application Guide. Always confirm jacking capacity, adapter requirements, and placement procedures with your aircraft maintenance manual before use.
Need your Tronair 50J25178 10-ton tripod jack serviced, repaired, or load tested?
Pilot John is an authorized Columbus Jack (Tronair) distributor and service center — one of a select group of authorized partners in North America. Our pricing on Columbus Jack jacks is competitive: PJi prices have been verified lower than other major aviation supply retailers on comparable models. Every jack ships new from our North Carolina warehouse with Certificates of Conformance (CofC) and FAA Form 8130-3 documentation available at no additional cost. Need jack service, calibration, or repair? Pilot John handles that too as an authorized service center.
| General Information | |
|---|---|
| Part # | 50J25178 |
| Manufacturer | Columbus Jack |
| NSN | 1730005162019 |
| Shipping Information | |
|---|---|
| Schedule B | 8425420000 |
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
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QUESTIONS & ANSWERS
The Columbus Jack 50J25178 – 10-Ton Aircraft Tripod Jack is used to lift aircraft for maintenance, repair, and inspection procedures. Its 20,000 lb (9,072 kg) vertical capacity makes it ideal for medium-sized aircraft during gear, brake, or tire servicing. This model’s variable-height design ensures flexibility for multiple aircraft configurations.
The 50J25178 employs a hydraulic lift system with a 26” (66 cm) hydraulic stroke and an additional 18” (45.7 cm) screw extension for fine height adjustment. This combination allows for smooth, controlled lifting and precise leveling during maintenance. It’s operated manually using a pump handle that delivers stable hydraulic pressure for safe aircraft elevation.
The jack has a minimum height of 36” (91.4 cm) and a maximum height of 80” (203.2 cm). For taller aircraft, optional leg extension kits are available, increasing height capabilities up to 152” (386 cm) depending on the kit used. This modular design makes the 50J25178 adaptable to various aircraft models and maintenance environments.
The jack’s tripod radius of 17” (40.6 cm) ensures a wide, stable base, and with extensions, the radius can expand up to 44.8” (114 cm). This broad stance helps distribute weight evenly and maintain balance even at maximum lift. The design minimizes lateral movement, ensuring aircraft safety during extended maintenance procedures.
The unit has an estimated net weight of 371 lbs (168 kg), providing the mass and rigidity necessary for stable operation. When crated for shipment, the total weight is approximately 620 lbs (294 kg), ensuring durability and security during transport. Despite its robust build, the jack remains easy to maneuver within maintenance areas using built-in handle and caster options.
The Columbus Jack 50J25178 includes a pressure relief valve to prevent overloading and maintain hydraulic integrity. The tripod legs are engineered for maximum lateral support, and the design incorporates corrosion-resistant materials suitable for aviation environments. Optional locking collars and mechanical stops further enhance safety during extended lifts.
Routine maintenance includes inspecting hydraulic seals, hoses, and screw threads before each use. Columbus Jack recommends periodically cleaning the hydraulic reservoir and using only Skydrol-compatible fluids to prevent corrosion. Proper lubrication of the screw extension and inspection of weld points can significantly extend the life of the jack.
When storing, ensure the hydraulic ram and screw are fully retracted to relieve internal pressure. Keep the jack in a dry, covered area, ideally in its original shipping crate, to prevent dust and moisture buildup. Avoid exposure to direct sunlight or corrosive fluids to maintain the finish and functionality.
The 50J25178 is designed for aviation-grade, phosphate-ester-based hydraulic fluids, such as Skydrol. These fluids ensure consistent viscosity and corrosion resistance in both high- and low-temperature conditions. Using the correct fluid type maintains seal integrity and prevents internal damage over time.
The 50J25178 can support a wide variety of aircraft but must always be verified against the aircraft manufacturer’s Maintenance Manual (AMM) for compatibility. It is ideal for business jets, regional aircraft, and smaller commercial types requiring precise tripod lifting. For larger airframes, higher-capacity Columbus Jack or Tronair tripod models are recommended.
Columbus Jack offers a one-year limited warranty covering defects in materials and workmanship. Warranty service includes access to genuine replacement parts, recalibration, and repair through the Tronair global support network. Regular inspection and adherence to Columbus Jack’s maintenance guidelines are required to maintain coverage.
