ESCO 50 Ton High Tonnage Single Acting Cyl Jack with Lock Nut
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ESCO 50 Ton High Tonnage Single Acting Hydraulic Cylinder Jack with Lock Nut
The ESCO 50 Ton High Tonnage Single Acting Hydraulic Cylinder Jack with Lock Nut (Model 10808) delivers professional-grade heavy lifting for OTR trucks, mining equipment, and industrial machinery. Featuring a safety lock nut for mechanical load holding, 50-ton capacity at 10,000 PSI, and lightweight aluminum construction at just 26.4 lbs (12 kg), this single-acting cylinder jack combines portability with heavy-duty performance. The 6-inch stroke, high-flow quick-connect coupler, and spring return mechanism make it ideal for applications requiring sustained load support and OSHA 29 CFR 1926.305 compliance. Backed by a 3-year warranty, this compact lifting solution acts as its own self-contained support stand.
ESCO 50 Ton Features
Safety Lock Nut for Load Holding
The integrated safety lock nut provides mechanical load holding capability, allowing the cylinder to sustain the lifted load even if hydraulic pressure is lost. This critical safety feature enables the jack to function as its own self-contained support stand, eliminating complete reliance on separate jack stands and aiding compliance with OSHA regulation 29 CFR 1926.305.
50-Ton Lifting Capacity
Rated for 50 US tons at 10,000 PSI (700 bar), this single-acting cylinder delivers the heavy tonnage required for OTR truck lifting, large equipment mobilization, and mining machinery support. The cylinder generates consistent lifting force throughout the 6-inch stroke, maintaining power across the full range of motion.
Lightweight Aluminum Construction
Built from heavy-duty aluminum instead of steel, this jack weighs just 26.4 lbs (12 kg) - a fraction of traditional high-tonnage cylinders. The lightweight design makes the unit highly portable without sacrificing structural integrity, allowing technicians to position and move it easily on job sites.
High-Flow Quick-Connect Coupler
The integrated high-flow quick-connect coupler enables fast, leak-free connection to compatible hydraulic pumps. This coupler design reduces setup time and minimizes connection losses, improving overall system efficiency during lifting operations.
Spring Return Mechanism
Equipped with a spring return system, the piston automatically retracts when pump pressure is released. This feature speeds up cycle times for repeated lifting operations and improves operator safety by reducing the need for manual piston management.
Compact Dimensions with Overflow Port
The overflow port functions as a stroke limiter, preventing overextension and protecting the cylinder from damage. Collapsed height of 12.5 inches expanding to 18.6 inches keeps the unit compact for confined spaces. Outside diameter of 5.27 inches fits between tight structural elements.
ESCO 50 Ton Applications
- OTR (Off-The-Road) Truck Lifting: Heavy tire and component service on mining haul trucks, logging trucks, and agricultural equipment requiring 50-ton lifting capacity and mechanical load holding for technician safety.
- Mining Equipment Maintenance: Lifting and supporting large mining machinery for routine maintenance, component replacement, and repair work in remote and challenging environments.
- Heavy Equipment Field Service: Mobile repair operations on construction equipment, industrial machinery, and specialized vehicles where portability and sustained load support are critical.
- Industrial Machine Setup: Precise positioning and lifting of manufacturing equipment, heavy machinery bases, and industrial components during installation and relocation projects.
- Emergency Response and Recovery: Vehicle and equipment lifting for accident recovery, towing operations, and heavy equipment extraction in situations requiring rapid deployment and high load-holding reliability.
ESCO 50 Ton Specifications
| Specification | Value |
|---|---|
| Lifting Capacity | 50 US tons |
| Operating Pressure | 10,000 PSI (700 bar) |
| Cylinder Type | Single-acting with spring return |
| Load Holding | Safety lock nut |
| Specification | Value |
|---|---|
| Stroke Length | 6 in (152 mm) |
| Collapsed Height | 12.5 in (317 mm) |
| Extended Height | 18.6 in (472 mm) |
| Effective Lift Range | 6 in |
| Specification | Value |
|---|---|
| Outside Diameter | 5.27 in (134 mm) |
| Piston Rod Diameter | 3.14 in (80 mm) |
| Cylinder Effective Area | 10.99 sq in (71 sq cm) |
| Lock Nut Thickness | 1.57 in (40 mm) |
| Specification | Value |
|---|---|
| Weight | 26.4 lbs (12 kg) |
| Oil Capacity | 67.07 cu in (1.1 liters) |
| Construction Material | Heavy-duty aluminum with aluminum nut |
ESCO 50 Ton Installation Requirements
Hydraulic Pump Connection
Coupler Type: High-flow quick-connect coupler compatible with standard hydraulic pump outlets. Pressure Rating: 10,000 PSI (700 bar). Connect the cylinder to a compatible hydraulic pump rated for 10,000 PSI operation. Ensure all hose connections are secure and fittings are properly seated before pressurizing the system.
Load Setup and Positioning
Surface Preparation: Place the jack on level, stable ground capable of supporting the combined weight of the cylinder (26.4 lb) and the full 50-ton load. Contact Point: Ensure the lifting point on the load is solid and capable of withstanding 50 tons of concentrated force. Position the jack's piston rod tip against the load contact point, allowing the full 6-inch stroke for lifting.
Safety Lock Nut Operation
Load Support: The integrated lock nut provides mechanical load holding once the desired height is reached. Screw the lock nut down firmly against the load contact point to create a mechanical lock that holds the load even if hydraulic pressure is lost. Load Verification: Always use additional support such as jack stands when required by safety protocols, and never rely solely on the lock nut as primary load support without verification of mechanical engagement.
Pressure and System Verification
Pre-Operation Check: Before lifting, verify that the hydraulic system is full of clean hydraulic fluid and that all connections are secure. Pressure Gauge: Use a pressure gauge to confirm system pressure does not exceed 10,000 PSI. Overflow Port: The overflow port functions as a stroke limiter - ensure it is clear and not blocked, preventing over-pressurization at full stroke extension.
What's Included with the ESCO 50 Ton Cylinder Jack
- ESCO 50 Ton Single-Acting Hydraulic Cylinder (Model 10808)
- Safety lock nut assembly for mechanical load holding
- High-flow quick-connect coupler
- Spring return mechanism fully assembled
- Carrying handle for positioning and transport
- Piston rod with 3.14-inch diameter
- Aluminum cylinder body and components
- All internal seals and hardware
Not Included: Hydraulic pump, hydraulic hose, pressure gauge, fittings, hydraulic fluid, jack stands, additional support equipment, or operator training. These items must be sourced separately based on your specific application and safety requirements.
ESCO 50 Ton Shipping and Delivery
Freight Shipping
Coverage: Free freight shipping to commercial addresses in the 48 contiguous United States. Lead Time: 5-10 business days for in-stock units. International: Contact sales for international shipping quotes and availability.
Delivery Requirements
Packaging: Ships in protective packaging suitable for the cylinder's size and weight. Delivery Type: Curbside or dock delivery standard. Inspection: Inspect the package immediately upon delivery for any visible damage. Verify contents match the order. Note any damage on the delivery receipt before signing.
Returns
Returns accepted within 30 days of delivery. Product must be unopened and unused in original packaging with receipt. A 20% restocking fee applies to all returns. Buyer is responsible for return freight costs. Contact Garage Supply Guys for return authorization before shipping.
ESCO 50 Ton Warranty
3-Year Limited Warranty
The ESCO 50 Ton Hydraulic Cylinder is warranted against defects in materials and workmanship for three years from the date of shipment.
- 3 Years: Full coverage on hydraulic cylinder, aluminum body, piston rod, lock nut assembly, seals, and all internal components against manufacturing defects
- Coverage: Repair or replacement (at ESCO's discretion) of unaltered parts found to be defective under normal use and proper maintenance
- Warranty Claim Process: Freight prepaid return to ESCO with proof of defect and purchase documentation
Exclusions: Warranty does not cover damage from improper use, overloading beyond 50-ton capacity, lack of maintenance, improper hydraulic fluid, unauthorized modifications, corrosion from environmental exposure, or damage caused by incompatible equipment. Damage from shipping is not covered by this warranty; such claims must be filed with the freight carrier within the specified timeframe.
Questions About the ESCO 50 Ton Cylinder Jack?
Our equipment specialists can help with pump selection, hose sizing, safety setup, and heavy equipment lifting planning for your OTR, mining, or industrial maintenance operations.
ESCO 50 Ton Cylinder Jack FAQ
What is the maximum lifting capacity of the ESCO 50 Ton cylinder?
The ESCO 50 Ton Hydraulic Cylinder is rated for 50 US tons (100,000 lbs) of lifting capacity at 10,000 PSI (700 bar) operating pressure. This single-acting cylinder design provides consistent lifting force throughout its 6-inch stroke. Never exceed the rated 50-ton capacity, as overloading can damage internal seals, compromise the lock nut mechanism, and create dangerous load-holding failures.
What does the safety lock nut do and how do I use it?
The integrated safety lock nut provides mechanical load holding capability independent of hydraulic pressure. After lifting the load to the desired height, screw the lock nut down firmly against the load contact point. This creates a mechanical lock that sustains the load even if hydraulic pressure is lost, providing a critical safety feature that helps the jack function as its own self-contained support stand and aids compliance with OSHA 29 CFR 1926.305.
How much space does the ESCO 50 Ton cylinder require?
The cylinder has a collapsed height of 12.5 inches and extends to 18.6 inches at full stroke, providing a 6-inch lifting range. The outside diameter is 5.27 inches, making it compact enough to fit between tight structural elements. These dimensions allow the cylinder to work in confined spaces typical of OTR truck chassis and heavy equipment components, while still delivering full 50-ton lifting capacity.
What hydraulic pressure is required to operate this cylinder?
The ESCO 50 Ton cylinder is designed to operate at 10,000 PSI (700 bar) pressure, delivering 50 tons of lifting force at this rated pressure. You must use a hydraulic pump rated for 10,000 PSI operation and capable of supplying sufficient flow to the cylinder. Always use a pressure gauge to monitor system pressure and ensure it never exceeds 10,000 PSI, as over-pressurization can damage seals and compromise performance.
What is the quick-connect coupler and why is it important?
The integrated high-flow quick-connect coupler enables fast, leak-free connection to compatible hydraulic pumps. This design reduces setup time on job sites and minimizes pressure losses during connection, improving system efficiency. Ensure your hydraulic pump's outlet coupler is compatible with this ESCO quick-connect type before purchasing, as incompatible couplers require adapters.
How does the spring return mechanism work?
The spring return system automatically retracts the piston when pump pressure is released. This feature speeds up lifting cycles for repeated operations and improves safety by reducing the need for manual piston management or separate retraction procedures. The spring maintains the piston in the retracted position when no pressure is applied, keeping the cylinder compact at 12.5 inches collapsed height.
What is the overflow port and why does it matter?
The overflow port functions as a stroke limiter, preventing the piston from over-extending beyond the 6-inch stroke and protecting the cylinder from damage. Ensure the overflow port remains clear and unobstructed during operation. If pressure is applied after the piston reaches full extension, the overflow port directs excess pressure safely back to the reservoir, protecting internal components.
Can I use this cylinder to replace a damaged or worn cylinder on my existing equipment?
The ESCO 50 Ton cylinder is a standalone lifting tool rated for 10,000 PSI operation. If you are replacing a cylinder on existing equipment, verify that your hydraulic system can deliver 10,000 PSI continuously, that the pump and hose are compatible, and that the quick-connect coupler matches your system's outlets. Consult with your equipment manufacturer or a hydraulic specialist to ensure proper integration.
How much does the ESCO 50 Ton cylinder weigh and is it portable?
The cylinder weighs only 26.4 lbs (12 kg), making it highly portable compared to traditional steel high-tonnage cylinders. The lightweight aluminum construction allows technicians to position, move, and transport the unit easily on job sites or in service vehicles. It includes a carrying handle for convenient hand transport between locations.
What warranty coverage does ESCO provide with this cylinder?
The ESCO 50 Ton Hydraulic Cylinder is backed by a 3-year Limited Warranty covering all components against manufacturing defects. The warranty includes the aluminum body, piston rod, lock nut assembly, seals, and internal components. Warranty claims require freight-prepaid return to ESCO with proof of purchase and documentation of the defect. Damage from misuse, overloading, improper maintenance, or shipping is not covered.
Should I use jack stands with the ESCO 50 Ton cylinder?
While the safety lock nut provides mechanical load holding capability that aids OSHA 29 CFR 1926.305 compliance, industry best practices recommend using additional support such as jack stands when required by safety protocols or equipment specifications. Never rely solely on the lock nut as your only load support without verifying mechanical engagement and without additional backup support as appropriate for your application and risk level.
What hydraulic fluid should I use with this cylinder?
Use high-quality hydraulic fluid meeting ISO VG 46 specifications or equivalent. Check your hydraulic pump manufacturer's recommendations for specific fluid type and anti-wear additive packages. Always ensure the hydraulic system is filled with clean fluid before operating the cylinder. Contaminated or incorrect fluid can damage internal seals, reduce performance, and void the warranty.
California Proposition 65 Warning
WARNING: This product contains chemicals known to the State of California to cause cancer or birth defects and/or other reproductive harm. For more information, visit www.p65warnings.ca.gov.
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