Enerpac SJ158 Screw Jack 5.75 in Stroke 2.875 in Plunger

Product Description

The ENERPAC SJ158 is a manual screw jack designed for controlled lifting, pushing, and positioning applications in industrial and trade environments. Operating on a mechanical screw mechanism rather than hydraulic fluid, it delivers precise load control through a threaded spindle. The SJ158 features a 5.75-inch piston stroke and a 2.875-inch plunger diameter, making it well suited for heavy-duty lifting tasks where a stable, adjustable working height is required. This jack weighs 12 pounds and is typically handled by maintenance mechanics, millwrights, pipefitters, and industrial technicians who need reliable manual lifting without a pump unit.

The ENERPAC SJ158 is applied in industrial maintenance, construction, and equipment rigging scenarios where controlled vertical travel is needed. Common uses include leveling machinery, supporting structural loads during installation, and positioning heavy components during alignment work. Its screw-drive design allows the operator to hold a load in position without hydraulic pressure, making it a practical choice for stationary support tasks in shop or field settings.

Key Features

• 5.75-inch piston stroke for extended vertical reach
• 2.875-inch plunger diameter for broad load bearing contact
• 2.25-inch screw diameter provides a robust drive thread
• Manual screw-drive mechanism holds load position without a pump
• 12-pound unit weight for manageable field portability

Compatibility

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

Installation Notes

Installation and use of this screw jack should be performed by qualified mechanics or millwrights familiar with mechanical lifting equipment. Always confirm the load rating of the jack is not exceeded before applying force, and ensure the base is placed on a stable, level surface. Never use makeshift extensions on the handle or place the jack on unstable ground. Follow applicable ASME and OSHA lifting safety guidelines during all jack operations.