Abell-Howe J904B Series Jib Crane
The Abell-Howe J904B Series is an all-purpose baseplate-mounted jib crane built for heavy-duty industrial applications.
Features
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.
Optional Accessories
- Top entry air swivel or electric collector rings on most models.
- Rotational stops.
- Anchor Bolts with Template.
- Wind or Position Lock.
- Galvanizing/Custom paint finishes.
- Spark-resistant and/or explosion proof construction for hazardous locations.
- Electric, Air or Hand-geared rotation.
- Manual Safety switch.
- Messenger wire assembly.
