Abell-Howe J904B Series Jib Crane

J-904B Features and Benefits

• 1/4 ton – 5 tons.
• Boom lengths from 8–20 ft.
• Under Boom Height from 8 to 30 ft.

Specifications

• 360 Degree Rotation on a Tapered Roller bearing providing full capacity vertical and radial thrust loading.
• Lower section of the head revolves around the pillar on a pair of steel rollers equipped with self-aligning roller bearings.
• Large diameter base plate is reinforced with heavy steel gussets for continuous alignment and rigidity.
• Anti Lift-off Device.
• Bottom roller 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 – W-beam section.
• Head section – Rigid steel plate box type with welded construction for minimum deflection between boom and mast.