Description
J904L Series Benefits & Features
Designed for rapid deployment, the Abell-Howe J904L Series is a foundationless jib crane that integrates seamlessly into light-duty industrial spaces with as little as 6 inches of concrete depth.
Capacities
- 500 – 1,000 lbs.
- Boom lengths from 6–16 ft.
- Height under boom (HUB) from 8–14 ft.
Specifications
- 360-degree rotation on a tapered roller bearing providing full-capacity vertical and radial thrust loading.
- Lower section of the head assembly revolves around the pillar on a pair of cam rollers.
- Fully enclosed cam rollers to avoid pinch points.
- Base plate is reinforced with heavy steel gussets for continuous alignment and rigidity.
- Top head assembly can be shimmed for boom leveling
- End-stops at both ends of the boom for safe trolley travel.
Concrete Floor Notes
- Minimum soil pressure of 2,500 psf.
- Minimum concrete compressive strength of 3,000 psi.
- Concrete floor must be at least 6” thick and contain wire mesh reinforcement.
- Jib crane must be centered on a square foot area that is free of cracks, seams, control joints, and walls.
Component Materials
- Mast — Fabricated from heavy wall structural steel pipe with wall thickness sized to minimize deflection.
- Boom — Wide flange beam section which provides high load-bearing capacity and improved structural integrity to effectively resist bending stresses.
- Head Section — Heavy-duty pipe section with greased top bearing.
Optional Accessories
- Top entry collector or air swivel (for 360-degree continuous rotation).
- Rotation stops.
- Anchor bolts with template – paper or steel.
- Tagline wire assemblies for hoist power cable.
- Epoxy paint finish.