What is a Toe Jack? A toe jack is a specialized hydraulic lifting tool designed with a low-profile "toe" to slide under heavy machinery and structures that sit flush or nearly flush with the ground.
What are the limitations of Toe Jacks? Because the load is lifted from the side rather than directly above the jack's center, the mechanism experiences intense torque and a tendency to lean toward the object being lifted. To ensure safety and prevent the jack from tipping or failing, operators must lift the load only two to three inches at a time, block the load, and reset the jack before lifting further. For more information click here.
Basic Functionality and Controls of a Toe Jack
Here is a video that explains how the jack functions.
Standard jacks need a decent amount of clearance, but this one has a super low-profile "toe" (the lifting lip) that can slide under tight gaps. Even better, the feet swivel out of the way, and you can adjust the starting height of the toe. For example, if a machine sits on 4-inch legs, you can set the toe to start right at 4 inches. That way, you don't waste time and arm strength pumping the handle just to reach the machine.
All the controls are clustered on the back tank so you aren't hunting around for them. The pumping handle is completely detachable and swivels around in a circle, meaning you can pump from whatever angle gives you the best leverage, even in a cramped corner.
When you start lifting, a silver "boot" mechanism slides up inside the red main housing. This acts as a stabilizer, keeping the load rock-steady and preventing the jack from bending or buckling if the weight tries to lean forward or sideways. You can also choose to lift the weight using the bottom toe or the very top of the boot itself.
When it’s time to bring the load back down, there is a thick, easy-to-grip lowering knob. It gives you incredible precision so you can slowly bleed off the pressure and lower a massive piece of equipment gently to the floor instead of dropping it with a thud.
How is the Toe Jack used to lift loads?
Here is a video that shows how a load is lifted using a toe jack.
Using this functionality to lift a load in the field is straightforward, whether you're lifting a machine with one jack or using multiple jacks synonymously.
First, you'll want to adjust the lifting toes, so they sit just underneath your load's pick-points, and swivel the feet so they clear any obstacles. Once the jacks are in position, open up the breather valves and start pumping. If you're using multiple jacks, just make sure you pump them evenly, so the load doesn't tilt.
When the load is high enough, slide your machinery skates underneath. Then, twist that thick release knob to gently lower the weight onto the skates. From there, you just pull the jacks out, move them to the other end of the machine, and repeat the process. Once all your skates are in place and the jacks are out of the way, you’re ready to roll!
Just a quick heads-up: This video is just a basic product intro, not an official training guide. Always make sure to follow OSHA guidelines and proper safety protocols when moving heavy equipment."
How does a Hydraulic Toe Jack create lift using hydraulic pressure?
Here is a video that explaisn how oil is pumped inside the jack to create lift.
So how do these jacks manage to lift tons of weight with just a few pumps of a handle? It all comes down to basic hydraulics.
Every time you pump the handle, you’re pushing oil from a reservoir tank through a small pipe and right into the chamber beneath the piston. To keep the oil flowing smoothly without creating a stubborn vacuum, a small breather valve lets air into the tank as the oil leaves. Because the piston is sealed tightly inside a metal cylinder, it can only move one way: straight up. As more and more oil piles into that chamber, the intense pressure forces the piston upward, which raises the outer sleeve and lifts your load.
The raw lifting capacity depends entirely on the surface area where the oil meets the piston. Think of a small surface area like one hand pushing, while a large surface area is like dozens of hands pushing at once. Because high-capacity jacks have to handle massive forces, they need much larger internal chambers. This means a 20-ton jack has a lot more empty space to fill than a 10-ton model. To lift a load just one inch, you might have to pump twice as many times on the 20-ton version. You're essentially trading speed for pure, heavy-duty lifting power.
When you're done and want to lower the load, you just loosen the lowering knob. This opens up a passage that lets the oil drain right back into the reservoir tank, emptying the chamber and gently bringing the jack back down.
How much capacity is required per toe jack when lifting a load?
Users often underestimate the jack's capacity when chosing a jack. What rated capacity to select depends on how many jacks are used simultaneously to lift the load. To understand the requiremenst and how to selct the correct capacity click here.
Type of Toe Jacks
Different designs of jacks offer a variety of advantages in the field.
All-In-One Toe Jacks
Compact Toe Jacks have a build in pumping mechanism. These are most commonly used jacks. Click here to read more on these type of jacks.
Pump-Operated Toe Jacks
Pump-Operated Toe Jacks separate the jack from the pumping mechansim. This allows the the jack to fit into a tight confined space. Click here to learn more about these type of jacks.
Q: What weight capacities are available within the JUNG toe jack lineup?
A: The lineup offers exceptional versatility, starting with compact individual jacks that lift up to 20 tons, configurations for up to 30 tons, and complete synchronized/pump-operated systems capable of lifting loads up to 120 tons.
Q: What is the purpose of the patented slide shoe design found on JUNG toe jacks?
A: The patented slide shoe design is engineered to counterbalance torque and side-loads during operation. This significantly reduces internal wear and tear, extending the product’s operational life far beyond conventional toe jacks.
Q: How do JUNG toe jacks prevent equipment damage from overloading?
A: Each jack is equipped with a built-in overload protection valve. If a load exceeds the jack's rated capacity, the valve safely prevents further lifting to protect both the operator and the equipment from failure.
Q: Can JUNG toe jacks safely lift loads on uneven or tight surfaces?
A: Yes. The jacks feature adjustable, swivel feet that adapt to available clearance, providing stable and secure support in virtually any position. Additionally, the starting height of the toe can be quickly adjusted to grab under low-clearance areas.
COMPACT Hand-Operated Toe Jacks
Q: What makes the "COMPACT" series ideal for standalone rigging tasks?
A: The COMPACT line features completely self-contained, hand-operated units with an integrated manual pump. This means they require no external hoses or separate power sources, making them highly portable and ready for immediate use up to 20 tons.
Q: Are the COMPACT hand-operated toe jacks easy to transport around a facility?
A: Yes, select models in the COMPACT and pump-operated series feature a practical "Tip & Roll" design, allowing operators to easily tilt the jack onto built-in wheels and wheel it to the next location without heavy lifting.
PUMP-OPERATED Toe Jack Sets
Q: What are the advantages of using a Pump-Operated Toe Jack Set over a manual compact jack?
A: Pump-operated sets allow the operator to control the lifting process from a safe distance using an external manual or electric pump. Additionally, these sets offer higher combined capacities, lifting heavy loads up to 60 tons.
Q: Do the external hoses on the Pump-Operated sets leak fluid when disconnected?
A: No. JUNG pump-operated toe jacks feature instant, drip-free quick-connect hose couplings that prevent hydraulic fluid loss and keep your workspace clean and safe during setup and teardown.
CONFINED-SPACE Toe Jack Sets
Q: When should a rigger choose a "CONFINED-SPACE" toe jack set?
A: Confined-space sets are specifically designed for environments that are exceptionally narrow and tall. They feature a slim footprint and a long stroke, allowing you to lift loads up to 20 tons when lateral floor space is severely restricted.
Q: Do the Confined-Space jacks trade lifting capacity for their slim profile?
A: Not at all. Despite their narrow and tall architecture, these specialized sets provide full industrial-grade lifting power, handling heavy machinery loads up to 20 tons safely.
"SHORTY" Toe Jack Sets
Q: What problem does the "SHORTY" toe jack series solve?
A: The "SHORTY" series is engineered specifically for applications with restricted overhead space, such as under low ceilings, low-hanging pipes, or inside tight enclosures where standard jacks are too tall to fit.
Q: What is the maximum capacity of a "SHORTY" toe jack configuration?
A: Despite their lowered profile and low head-clearance design, "SHORTY" toe jack sets can reliably lift heavy industrial loads up to 20 tons.
Synchronized Lifting Systems
Q: How does the Synchronized Lifting System handle loads with uneven weight distribution?
A: The Synchronized Lifting System is designed to distribute hydraulic pressure proportionally. This ensures that multi-point lifting points rise at the exact same rate, keeping unbalanced or top-heavy machinery perfectly level during the lift.
Q: What is the maximum lifting capability of the Synchronized Lifting System?
A: The Synchronized Lifting System can be scaled to lift heavy-duty, complex industrial loads weighing up to 80 tons.
Components & Customization
Q: Can I buy individual components instead of a pre-configured jack set?
A: Yes. Under the "COMPONENTS" category, Toolwell offers individual single jacks, manual pumps, electric pumps, and hydraulic hoses. This allows you to completely customize or build out a custom jack set up to 60 tons, or replace specific items as needed.
Q: What options are available for powering pump-operated components?
A: You can choose between manual hand/foot pumps for precise, human-controlled lifting, or high-efficiency electric hydraulic pumps for effortless, rapid lifting of heavy machinery.
Quality, Safety & Support
Q: Where are JUNG heavy-duty toe jacks manufactured?
A: All JUNG material handling equipment is precision-engineered and manufactured in Germany, ensuring adherence to the highest standards of European craftsmanship, material strength, and industrial longevity.
Q: What high-profile organizations trust JUNG lifting equipment?
A: JUNG's legendary reliability makes it the choice for mission-critical operations worldwide, including rigorous usage by NASA and the United States Military.
Q: How precise is the lowering mechanism on these toe jacks?
A: The internal mechanisms are engineered with ultra-precise lowering control. This allows operators to slowly, smoothly, and gently lower heavy machinery, protecting delicate internal components from sudden drops or jarring impacts.
Q: Where can I find replacement parts or user documentation for my JUNG toe jack?
A: Toolwell provides full documentation via our "Parts Diagrams & Operating Manuals" section, covering all JUNG skates and jacks manufactured since 1972 to support long-term maintenance and compliance.
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