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MAST
TYPE JIB CRANES
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THE
ECONOMICAL 360° SOLUTION |
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The MT Series
Crane is floor supported, top stabilized,
and is capable of 360° rotation via a top and bottom
bearing assembly. |
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Three key requirements
must be met before deciding
on a Mast Type Jib Crane: |
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1. An adequate
structural support to stabilize the crane
at the top of the mast must exist. If the jib is installed
underneath an overhead crane runway or building
truss, then the deflection of the supporting member
may not exceed 1/2 inch. |
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2. Clearance overhead
for the pivot assembly must exist. |
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3. Clearance overhead
for the boom to rotate must exist. |
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AVAILABLE
IN TWO STYLES |
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1) MT400 FULL
CANTILEVER—provides for maximum
amount of lift where full use of available headroom
is
desired. |
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2)
MT450 DROP CANTILEVER—jib boom can be
placed at a specific height to clear overhead
obstructions. |
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MAST
TYPE JIB CRANES ADVANTAGE
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ECONOMICAL |
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• Simple,
efficient design that usually requires no special foundation makes
the Mast Type Cranes the most cost effective of the 360°
rotation jib styles. |
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EXERTS LESS
FORCE ON BUILDING STRUCTURE |
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• Exerts
the least amount of force of any jib on its supporting structure. |
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SAFETY |
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Utilizes a self-aligning radial bushing at the top which cannot be displaced,
and an identical self-aligning radial bushing at the bottom
which, used in
combination with an oil-impregnated bronze thrust washer,
provides ease
of movement. |
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| CHART
1B - Boom Data |
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Pre-Engineered for use with powered hoists. A factor of 15% of the jib crane
capacity is allowed for the hoist and trolley weight with
an additional 25%
of the capacity allowed for impact, thus giving maximum capacity
use of the
jib. |
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BOOM DATA |
Boom
Height (W) |
Beam Size |
Flange
Width (in) |
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6" |
W6@12#/ft. |
4" |
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8.125" |
W8@18#/ft. |
5-1/4" |
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10.33" |
W10@26#/ft. |
5-3/4" |
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12.5" |
W12@35#/ft. |
6-1/2" |
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16.125" |
W16@45#/ft. |
7" |
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18" |
W18@50#/ft. |
7-1/2" |
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21" |
W21@62#/ft. |
8-1/4" |
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24.125" |
W24@84#/ft. |
9" |
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PRODUCTIVE |
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• Allows
full utilization of the working area with 360° rotation. |
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MAXIMUM TROLLEY
TRAVEL |
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• Mast/beam
connections eliminate the need for tie rods or knee braces found
on competitive designs, thus permitting maximum trolley travel. |
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OPTIONAL POWER
ROTATION |
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• (Features
are shown below) |
| FEATURES
OF MOTORIZED CONTROL PACKAGE |
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Variable Frequency Drive (VFD) is standard. |
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The
Variable Frequency Drive can be used in single or multiple speed
applications. |
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Variable Frequency Drive provides the ultimate in load control. |
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The
VFD provides the ultimate in load control and positioning from the
slowest possible creep speed up to maximum speed. The VFD is up to
25 times smoother than ballast resistor controls, does not produce
extensive heat, and enables precise starting and stopping. |
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Easily adjustable speed control. |
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Through
a simple keypad on the VFD, the acceleration rate,
deceleration rate and rotation speed can be adjusted to fit your application.
This allows you to customize the performance of the jib to your exact
requirements. |
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Designed for indoor and outdoor use. |
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When
being used outdoors, the cranes are designed to operate in
winds of 15 mph or less, based on a maximum load surface of 16 square
feet. Consult us for applications exceeding these standards. |
The
direct drive powers the rotation
of the Free Standing Crane. A speed
of 1/2 RPM is standard. |
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Standard NEMA 4X Controls Enclosure. |
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Standard
controls enclosure meets the requirements for NEMA 3R,
12, 4 and 4X environments. Optional enclosures are available for other
environments. |
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Low maintenance costs. |
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The
VFD eliminates the need for magnetic reversing contractors,
reduces the number of wearable components in the panel, and reduces
long-term maintenance costs. |
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For
Pricing, Accessories and Dimensional Specifications -
Click a Load Capacity Link Below |
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Variable
Speed Controls provide the
ultimate in jib crane rotation control form
creep speed to maximum speed. |
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