The H-Lift RJL Low Profile Mechanical Rack Jack is a specialized lifting tool designed for applications with extremely limited ground clearance. Featuring a minimized toe height, this jack can slide under low-set loads where standard jacks cannot fit. It retains the robust mechanical rack-and-pinion design of the standard series, offering reliable lifting power without the need for hydraulics or electricity, making it perfect for precision alignment and heavy maintenance in confined industrial spaces.
H-Lift RJL Series Low Profile Rack Jacks are specialized lifting tools featuring an ultra-low toe height for accessing loads with extremely limited ground clearance. With a minimum toe height starting at just 25mm, these jacks are essential for precision machinery moving, installation, and maintenance tasks where standard jacks cannot fit.
Designed with an exceptionally low toe height starting at just 25mm (1.5t) and 40mm (3t-10t), allowing access under equipment with very limited space.
Capable of lifting loads from both the Head (top) and the Toe (bottom), offering versatility for different industrial lifting scenarios.
Equipped with Two Safety Pawls and a self-locking mechanism to prevent uncontrolled descent and ensure the load remains secure at any height.
Features a high-efficiency crank with a folding handle for easy operation and compact storage, providing smooth, controlled vertical lifting.
Q: What is the minimum toe height of the RJL jack?
A: The 1.5-tonne model (RJL015) has a minimum toe height of just 25mm. The 3t, 5t, and 10t models have a minimum toe height of 40mm.
Q: Can I lift the full rated capacity on the toe?
A: Yes, for the RJL series (1.5t to 10t), the jack is rated to lift the full Safe Working Load (SWL) on both the head and the toe.
| Item No. | Capacity (t) | Proof Load (kN) | Effort to Lift (N) | Stroke (mm) | Min. Lifting Height (mm) | Dimensions (mm) | N.W. (kg) | Product Code | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F (Head) | H (Toe) | A | B | C | D | E | G | K | R | |||||||
| RJL015 | 1.5 | 18.4 | 150 | 300 | 25 | 600 | 163 | 206 | 289 | 160 | 55 | 140 | 113 | 225 | 14.8 | 802002015 |
| RJL030 | 3 | 36.8 | 280 | 350 | 40 | 735 | 197 | 219 | 316 | 170 | 60 | 150 | 127 | 250 | 23.3 | 802002030 |
| RJL050 | 5 | 61.3 | 280 | 350 | 40 | 735 | 189 | 258 | 355 | 200 | 70 | 170 | 127 | 275 | 31.3 | 802002050 |
| RJL100 | 10 | 122.5 | 560 | 410 | 40 | 805 | 250 | 318 | 523 | 220 | 86 | 170 | 248 | 300 | 49 | 802002100 |
Ensure the toe is fully engaged under the load before lifting. Do not exceed the rated capacity. Always operate on a firm, level surface to prevent tipping.
Jacks may be hydraulic or mechanical in operation and are available in a wide range of capacities and designs. Proper selection is critical for safety.
Multiple Jacks: Most operations require multiple jacks. It is impossible to raise/lower them in perfect unison, causing uneven loading. Ensure jack capacity is adequate to handle load transfer. Keep the load level.
Floor Stability: Ensure the floor can withstand the point load. Use floor plates to spread the load if necessary. Avoid buried cables or pipes.
Contact: The jack head must be in full, firm contact with the jacking point. Use packers to prevent slipping.
Store jacks upright with the ram/rack/screw fully lowered to protect them from damage. Remove handles/levers and store separately. Never store damaged jacks.
Clean jacks regularly to remove dirt from racks, screws, and seals. Check hydraulic oil levels. Lubricate moving mechanical parts.
Defects to Watch For:
A mechanical rack jack, often referred to simply as a rack jack or screw jack, is a mechanical device designed for lifting heavy loads vertically. Operating on the principle of a threaded screw mechanism, it converts rotational motion into vertical movement to raise or lower loads with precision.
Design Components:
The threaded screw mechanism allows users to lift heavy loads with significantly less physical effort compared to manual lifting.
Height adjustment is achieved by turning the crank handle. The lifting rate is directly controlled by the speed at which the handle is turned.
Many models include braking mechanisms or locking systems to prevent the load from lowering unintentionally.
Designed with a broad base and rigid structure to provide maximum stability and prevent tipping during use.
Rack jacks are used when precise, controlled vertical lifting is required:
While rack jacks are highly effective for vertical lifting, they are not typically designed for horizontal movement. If horizontal shifting of the load is required, additional equipment (such as load moving skates) or mechanisms must be used.
To ensure safe and efficient operation, regular maintenance is required:
