Description
J904B Series Benefits & Features
Engineered for maximum versatility, the Abell-Howe J-904B Series serves as a rugged, multi-purpose base-mounted pillar jib crane designed to withstand the rigors of heavy-duty industrial environments.
Capacities
- 1/4 ton – 5 tons.
- Boom Lengths 8-30 ft. on select capacities.
- Height under boom (HUB) from 8-30 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.
- Head restraint — 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.
- Foundation requires 3-4 ft depth.
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 — Rigid steel plate box type with welded construction for minimum deflection between boom and mast.
Optional Accessories
- Top or bottom entry collector or air swivel (for 360-degree continuous rotation).
- Rotation stops, wind or position lock for boom.
- Anchor bolts with template – paper or steel.
- Galvanized, sand blasted or epoxy paint finishes.
- Spark-resistant or explosion-proof for hazardous locations.
- Electric, air or hand-geared powered rotation.
- Fusible disconnect switch for indoor or outdoor.
- Tagline wire or C-track festoon assemblies for power to trolley/hoist.