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National Crane
Published 5-27-2018 Control # 039-06
11-15
800D
HOIST
HOIST TORQUE SPECIFICATIONS CHART
i
T = BOLT TORQUE (lb-ft)
T = (KWD) / 12
K = TORQUE COEFFICIENT
(K = 0.20 DRYK = 0.15
PLATEDK = 0.12 LUBRICATED)
W = PRELOAD TENSION
D= NOMINAL BOLT SIZE (IN)
*ALL TORQUE VALUE
TOLERANCES ARE ± 5%
Dry
SAE Grade 5
Plated
SAE Grade 5
Lubricated
SAE Grade 5
Dry
SAE Grade 8
Plated
SAE Grade 8
Lubricated
SAE Grade 8
Nominal
Size
Torque
*(lb-ft)
Torque
*(lb-ft)
Torque
*(lb-ft)
Torque
*(lb-ft)
Torque
*(lb-ft)
Torque
*(lb-ft)
1/4
20
8
6
5
12
9
7
1/4
28
10
7
6
14
10
8
5/16
18
17
13
10
25
18
15
5/16
24
19
14
11
27
20
16
3/8
16
31
23
19
44
33
26
3/8
24
35
26
21
49
37
30
7/16
14
49
37
30
70
53
42
7/16
20
55
41
33
78
58
47
1/2
13
76
57
45
106
80
64
1/2
20
85
64
51
120
90
72
9/16
12
109
82
65
153
115
92
9/16
18
122
91
73
172
129
103
5/8
11
150
113
90
212
159
127
5/8
18
170
128
102
240
180
144
3/4
10
266
200
160
376
282
226
3/4
16
297
223
178
420
315
252
7/8
9
430
322
258
606
454
364
7/8
14
474
355
284
668
501
401
1
8
644
483
386
909
682
545
1
14
721
541
433
1019
764
611
1 1/8
7
794
596
475
1288
966
772
1 1/8
12
890
668
534
1444
1083
866
1 1/4
7
1120
840
672
1817
1363
1090
1 1/4
12
1241
930
745
2012
1509
1207
Fo
r
Reference
Only
Summary of Contents for National Crane 800D
Page 1: ...Operator and Service Manual National Crane 800D F o r R e f e r e n c e O n l y ...
Page 4: ...F o r R e f e r e n c e O n l y ...
Page 252: ...SCHEMATICS 800D 2 Published 5 27 2018 Control 039 06 F o r R e f e r e n c e O n l y ...
Page 255: ...F o r R e f e r e n c e O n l y ...
Page 256: ...F o r R e f e r e n c e O n l y ...