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NOTE:
1. All capacities are in pounds, angles in degrees, radius in feet.
2. Loaded boom angles are given as reference only.
3. Shaded areas are structurally limited capacities.
6
8
10
12
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
72,000
63,000
54,000
47,000
38,500
29,500
22,000
15,500
76.4
72.2
68
63.7
57
44.3
27.1
0
76.8
73.5
67.8
61.8
55.5
48.6
40.7
31.3
18.9
0
36,000
31,000
24,600
20,500
17,400
14,000
11,000
9,000
7,400
6,300
79.5
75.8
71.9
68
63.9
59.7
55.2
50.6
45.4
39.6
33.1
25.1
12.7
0
25,000
20,500
17,000
14,700
12,900
11,300
9,400
7,800
6,500
5,300
4,300
3,500
2,850
2,600
79.6
77
74.2
71.3
68.4
65.4
62.2
58.9
55.3
51.5
47.6
43.4
38.8
33.8
27.9
20.5
7.3
0
14,000
13,000
11,700
10,600
9,500
8,400
7,600
6,600
5,500
4,500
3,700
3,050
2,400
1,900
1,500
1,100
800
750
79.5
77.5
75.3
73.1
70.8
68.5
65.9
63.3
60.6
57.8
55
51.9
48.7
45.4
41.9
38.1
34
8,700
8,200
7,700
7,200
6,700
6,200
5,400
4,800
4,200
3,700
3,100
2,550
2,050
1,600
1,200
850
550
127 ft
BOOM
LOADED
BOOM
ANGLE
103 ft
BOOM
LOADED
BOOM
ANGLE
79 ft
BOOM
LOADED
BOOM
ANGLE
55 ft
BOOM
LOADED
BOOM
ANGLE
LOADED
BOOM
ANGLE
LOAD
RADIUS
(ft)
31 ft
BOOM
(lb) (lb) (lb) (lb) (lb)
Reduce load 1,600 lb
Reduce load 1,400 lb
Reduce load 1,300 lb
Reduce load 1,250 lb
Reduce load 1,200 lb
31 ft JIB RATED LOADS
31 ft JIB ERECTED
Reduce load 500 lb
Reduce load 300 lb
Reduce load 200 lb
Reduce load 150 lb
Reduce load 100 lb
BOOM
LENGTH
31ft
55ft
79ft
103ft
127ft
RATED LOAD REDUCTIONS WITH JIB
RADIUS
FULLY
EXTENDED
LOADED
BOOM
ANGLE
RATED LOADS
ALL BOOM
LENGTHS
80
75
70
65
60
55
50
29
44
58
72
84
94
104
3,800
3,300
2,900
2,500
2,150
1,600
1,000
31 ft JIB STOWED
9
1500
capacities
Load Rating Chart: Series 15127 (38.71 m) Boom with 31 ft (9.45 m) Jib/Fullspan Outrigger 24.66 ft (7.51 m)
Load Rating Chart: Series 15127 (38.71 m) Boom with 31 ft (9.45 m) Jib/Fullspan Outrigger 24.66 ft (7.51 m)
THIS CHART IS ONLY A GUIDE AND SHOULD NOT BE USED TO OPERATE THE CRANE. The individual crane’s load chart, operating instructions and
other instructional plates must be read and understood prior to operating the crane.
National Crane will send you a chart on request – or you may secure needed load rating information through your nearest
National Crane dealer.
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
C/L 10 20 30 40 50 60 70 80 90 100 105
158
103
80O
75O
55O
60O
65O
70O
50O
45O
40O
35O
30O
25O
20O
10O
15O
5O
RADIUS IN FEET
HEIGHT IN FEET
15127
FULL-SPAN
OUTRIGGER 24.66 FT.
127 ft BOOM
31 ft JIB
0O
48O
-10O
127
79
TEEF NI HTGNEL MOOB
55
31
NOTE:
1. Operate with jib by radius when main boom is
fully extended. If necessary increase boom
angle to maintain loaded radius.
2. Operate with jib by boom angle when main boom
is not fully extended. Do not exceed rated jib
capacities at any reduced boom lengths.
3. Capacities do not exceed 85% stability.
4. Shaded areas are structurally limited capacities.
120
100
80
60
40
HEIGHT IN FEET
OT
ND
TO
S
A
140
160
SWITCH
POSITION OPERATING MODE
LMI OPERATING CODE SWITCH
01 MAIN BOOM - NO JIB STOWED
02 MAIN BOOM - JIB STOWED
03 25 FT TELE JIB
0
CAUTION:
• Do not operate crane booms, jib extensions, any
accessories or loads within 10 ft (3m) of live power lines
or other conductors of electricity.
• Jib and boom capacities shown are maximum for each
section.
• Do not exceed capacities at reduced radii.
• Load ratings shown on the load rating charts are maximum
allowable loads with the outriggers properly extended on a
firm, level surface and the crane leveled and mounted on a
factory recommended truck.
• Always level the crane with the level indicator located on
the crane.
• The operator must reduce load to allow for factors such as
wind, ground conditions, operating speeds and their effects
on freely suspended loads.
• Overloading this crane may cause structural collapse or
instability.
• Weights on any accessories attached to the boom or
loadline must be deducted from the load chart capacities.
• Do not exceed jib capabilities at any reduced boom lengths.
• Do not deadhead lineblock against boom tip when
extending boom or winching up.
• Keep at least three wraps of loadline on drum at all times.
• Use only specified cable with this machine.
SERIES 15127 (38.71 M)
BOOM WITH 31 FT
(9.45 M) JIB/FULL-SPAN
OUTRIGGER 24.66 FT
(7.51 M)
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