CAPACITY CHART CD15 OPERATOR MANUAL
4-2 Published 3-30-2018, CTRL 636-05
Things to Observe When Using the Capacity
Chart
1. The rated loads are the maximum lift capacities as
determined by operating radius, boom length and boom
angle. The operating distance from a projection of the
axis of rotation to the supporting surface, before loading,
to the center of the vertical hoist line or tackle load
applied.
2. The rated loads shown in the Capacity Chart on
Outriggers do not exceed 85% of actual tipping. The
rated loads shown on rubber do not exceed 75% of
actual tipping. These ratings are based on freely
suspended loads with the crane leveled, standing on a
firm, uniform supporting surface. Practical working loads
depend on supporting surface, operating radius and
other factors affecting stability. Hazardous surroundings,
climatic conditions, experience of personnel and proper
training must be taken into account by the operator.
3. The weights of all load handling devices such as hooks,
hook blocks, slings, jib boom, etc., except the hoist rope,
shall be considered as part of the load. The weights for
these items is stated on the capacity chart.
4. Ratings on outriggers are for FULLY EXTENDED
outriggers.
5. Ratings on rubber depend on tire capacity, condition of
the tires and proper inflation pressure of 125 psi (9 bar).
Loads on rubber may be transported at a maximum
speed of 2.5 mph (4 km/h) on a smooth level surface
with the boom retracted to the shortest length possible
and centered over the front. Do not use the boom
extension with the crane on rubber.
6. For operating radius not shown on the Load Rating and
Range Diagram Chart, use load rating of the next larger
radius.
7. With a load both on the boom (pick and carry) and on the
cranes’ deck the maximum combined load is 16,000 lb.
(7258 kg). The maximum load that can be placed only
on the deck with nothing attached to the boom is 20,000
lb. (9070 kg).
8. Do not induce any external side loads to the boom or the
boom extension.
Determining Lift Capacity at the Boom
Extension
The boom extension increases the length of the boom
assembly by 15 feet (4.57 m).
The capacity of the boom extension is determined in two (2)
steps. First, as with the main boom, check the main capacity
chart after determining the operating radius. These
capacities are based on main boom strength and machine
stability. Second, check the boom extension (jib boom)
structural capacities after determining boom angle. These
limits are based on the boom extension structural strength.
Use the lesser of these two capacities such that neither is
exceeded.
NOTE: Exceeding the Capacity is dangerous and voids the
crane’s warranty.
Pick and Carry Ranges
Figure 4-2 illustrates the range of operation for pick and
carry loads. Do not pick and carry outside of the specified
ranges. The crane could become unstable and tip over.
FIGURE 4-2
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