Enerpac SJ2518 Screw Jack 4.25in Stroke

Product Description

The ENERPAC SJ2518 is a manual screw jack designed for controlled lifting, positioning, and load-holding in heavy-duty industrial and mechanical applications. Operating on a mechanical screw drive rather than hydraulic fluid, the SJ2518 delivers reliable, self-sustaining lift without pumps or hoses. The piston stroke measures 4.25 inches, and the plunger and screw diameter are both 3.25 inches, giving this jack a robust cross-section suited for high-load vertical work. At 52 pounds, it is a substantial unit intended for stationary or semi-permanent rigging setups. Millwrights, maintenance mechanics, and industrial contractors are the primary installers and operators of this equipment.

The SJ2518 is suited for industrial maintenance environments where precise, incremental lifting is required and where a load must be held in position without continuous operator input. Typical applications include machinery alignment, press work, structural support during maintenance, and load transfer operations. The mechanical screw design allows the jack to hold a load at any extension point without a separate locking mechanism, making it appropriate for sustained-load scenarios encountered in plant maintenance and heavy equipment service.

Key Features

• Screw jack design holds load at any stroke position without additional locking hardware
• 4.25 inch piston stroke for controlled incremental lift range
• 3.25 inch plunger and screw diameter for high-load capacity and structural rigidity
• Manual operation requires no hydraulic power unit, pump, or hoses
• Weighs 52 pounds, built for stationary industrial rigging use

Compatibility

Designed as an OEM-style replacement or direct-use screw jack for industrial lifting and positioning applications requiring a manual, self-sustaining mechanical drive.

Installation Notes

Installation and operation of this screw jack should be performed by qualified millwrights or mechanical contractors familiar with rigging and load-bearing equipment. Always verify that the supporting surface and load contact point can handle the rated load before extending the jack. De-energize, lock out, and block any equipment being serviced before placing the jack under load. Follow applicable ASME and OSHA standards for lifting and rigging operations.