Abell-Howe-Jib-Cranes - Flipbook - Page 22
MOTORIZED ROTATION
ABELL-HOWE offers motorized rotation as an added feature on select models of jib cranes. Available in our Free Standing,
Wall-Cantilever, Wall-Bracketed and Mast-Type Jib Crane Models. Our rotation drive is ergonomical and increases safety and
control for the crane operator.
TYPE
Pillar or Wall-Mounted
CAPACITY
¼ ton – 5 tons standard
SPAN
8–20 ft. Standard
HEIGHT UNDER BOOM (HUB)
8-20 ft. Standard
ROTATION SPEED
SERVICE
Rotation Motor, Brake & Gear Box
½ RPM Nominal Speed Standard
Indoor or Outdoor
Ring Gear on Mast
Rotation Drive Pinion
BENEFITS & FEATURES
■
Rotation mechanical drive – The heart of the motorized
rotation drive is a superior speed reducer with a direct
drive from our motor pinion to the ring gear. This motor,
brake and gearbox includes:
✔
✔
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■
Variable Frequency Drive (VFD) rotation control allows
for precision movements, with a brake for emergency
stopping and preventing unwanted movements.
■
Rotation limit switch – two-pole limit switch available.
Designed for severe duty mill applications.
■
Top or bottom entry collector for 360-degree continuous
rotation — prevents twisting of the jib crane wiring.
■
Ask your Abell-Howe distributor about powered rotation.
Lapped steel, spiral bevel pinions, and gears
heat-treated and hardened to 58-62 Rockwell C.
Helical-enclosed gearing – 昀椀nal reduction from a
heat-treated drive pinion to a hardened ring gear
fastened to top side of jib mast.
