National Crane Published 12-21-2011 CTRL #050-09 4-7
1300A OPERATOR’S MANUAL SET-UP
MULTIPART LINE REEVING
Multipart line reeving enables greater loads to be lifted than
can be lifted with single part line. However, loads are limited
by the stability and structural integrity of the crane. The load
must be within the limits contained in the load chart.
Using Multiple Part Lines
The hoist data chart provides information for pull limitations
on the hoist with various multipart reevings. These ratings
are based on providing the proper operating safety factor on
the cable supplied with the machine. Therefore, any
replacement rope must meet the cable specification in this
manual.
Lifting A 30 Ton (60,000 Lbs) Load
The 1300A is rated to lift 60,000 lbs (30 ton) at a 5 ft radius
with all booms retracted with a seven part block. To make this
lift the crane must be equipped with optional 6 x 25 IWRC
wire rope with a rated breaking strength of 33,600 lbs. This
rope is required to have the appropriate 3.5:1 safety factor.
It is also necessary to increase the hoist system hydraulic
pressure relief valve from 3,300 psi (+100/-0) to 3,450 psi
(+100/-0). See the Service manual. This is required to
increase the hoist pull to 8,600 lbs pull to achieve the 60,000
lbs (30 ton) lift with seven part rigging.
All components on the crane are rated for intermittent
operation under these conditions. After this lift is completed
the hoist operating pressure must be reduced back to
3,300 psi.
Continuous operation of the hoist hydraulic system at
nominal pressures greater than 3,300 psi will shorten the life
of hydraulic components and void their warranty.
HOIST CABLE INSTALLATION
To install wire rope, use the following procedure:
1. Unwind the cable from the storage reel and route the
cable through the boom cable guides to the hoist from in
front of the boom.
.
2. Install the end of the cable into the hoist using the wedge
socket provided (Figure 4-5).
3. Remove the cable keeper pin from the boom sheave
and lay the cable over the top sheave. Replace the
keeper pin.
4. Unspool the remainder of the cable. Make sure the cable
is straight and without kinks.
5. Attach the wedge socket to the free end of the cable as
shown in (Figure 4-8). If you are using a terminator
wedge socket, see Figure 4-7.
6. Torque the clamp on the dead end of the cable to 95 ft-lb
(128 N·m).
1 Part Line 2 Part Line 3 Part Line 4 Part Line 5 Part Line 6 Part Line 7 Part Line
Maximum Pull
7,700 Lbs
Maximum Pull
15,400 Lbs
Maximum Pull
23,100 Lbs
Maximum Pull
30,800 Lbs
MaximumPull
38,500 Lbs
Maximum Pull
46,200 Lbs
*Maximum Pull
53,900 Lbs
* 60,000 Lbs Load Requires Optional 9/16” Diameter 6 x 25 IWRC Cable
** The hook block must be sized to the number of line parts. For example, do not use a six part line hook block on a three
part line reeving. Contact your National Crane Distributor or Manitowoc Crane Care to order the proper hook block.
CAUTION
If the cable is wound from a storage reel, rotate the reel in
the same direction as the hoist.
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