Abell-Howe J904L Series Jib Crane

Abell-Howe J904L Series Features and Benefits

• 1/4 ton – 1/2 ton.
• Boom lengths from 6–16 ft.
• Under Boom Height from 8 to 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.

Component Material

• 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.

Concrete Floor Notes

• Concrete floor must be at least 6” thick and contain wire mesh reinforcement.
• Minimum soil pressure of 2,500 psf.
• Minimum concrete compressive strength of 3,000 psi.
• Jib crane must be centered on a square foot area that is free of cracks, seams, control joints, and walls.