Free Standing J-904 Jib Cranes
- 360° rotation, self-supporting jib crane ideal for spot handling in manufacturing and assembly plants.
MAST: Fabricated from heavy wall structural steel pipe with wall thickness sized to minimize deflection.
BASE PLATE: Large diameter base plate is reinforced with heavy steel gussets for continuous alignment and rigidity.
HEAD SECTION: Rigid steel plate box type with welded construction for minimum deflection between boom and mast.
Bottom roller assembly can be shimmed for boom leveling.
BOOM: Rolled steel l-beam section with long wearing tapered flange for smooth trolley travel.
End stops at both ends of the boom are provided to limit trolley travel.
Features:
The J-904 boom features full 360° rotation on a tapered roller bearing providing full capacity vertical and radial thrust loading.
The lower section of the head revolves around the pillar on a pair of steel rollers equipped with self-aligning roller bearings.
Available in hand push, hand geared rotation, air or electric motor drives.
J-904 Pillar Jib Cranes are available as standard in capacities from 500-20,000 Ibs, spans to 30 ft and under boom height from 8 to 30 ft.
Larger capacity & special configurations are available upon request.

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