Grove RT9130E - Environmental Conditions; Dynamic Shock Loads; General; Wire Rope

Published 08-25-09, Control # 077-04 1-15
RT9130E SERVICE MANUAL INTRODUCTION
1
GROVE
Table 1-4
Torque Values For Metric Fasteners With No Special Lubrication - Coarse Threads
Table 1-5
Torque Values For Metric Fasteners With No Special Lubrication - Coarse Threads
WIRE ROPE
General
The following information is a compendium of information
from various wire rope manufacturers and includes
inspection, replacement, and maintenance guidelines for
wire rope as established by ANSI/ASME B30.5, federal
regulations, and Manitowoc. The inspection interval shall be
determined by a qualified person and shall be based on such
factors as expected rope life as determined by experience on
the particular installation or similar installations, severity of
environment, percentage of capacity lifts, frequency rates of
operation, and exposure to shock loads. Periodic
Inspections need not be at equal calendar intervals and
should be performed at shorter time intervals as the wire
rope approaches the end of its useful life. A periodic
inspection shall be performed at least once a year. The
following provides inspection and maintenance procedures
for wire ropes used on Grove products (e.g. wire rope used
as load lines [hoisting cables], boom extension and
retraction cables, pendant cables, tow winch cables, and
hook block tie down cables).
Environmental Conditions
The life expectancy of wire rope may vary due to the degree
of environmental hostility and other conditions to which these
mechanical devices are subjected. Variation in temperature,
continuous excessive moisture levels, exposure to corrosive
chemicals or vapors or subjecting the wire rope to abrasive
material may shorten normal wire rope life. Frequent/
periodic inspections and maintenance of your wire rope is
recommended for preventing premature wear and to insure
long-term satisfactory performance.
Dynamic Shock Loads
Subjecting wire rope to abnormal loads beyond the
endurance limit will shorten the wire ropes, life expectancy.
Examples of this type of loading are listed below.
Bolt Diameter - Metric
TORQUE VALUES (Nm)
Grade
M4
0.157
M5
0.197
M6
0.236
M7
0.276
M8
0.315
M10
0.394
M12
0.472
M14
0.551
M16
0.630
M18
0.709
M20
0.787
M22
0.866
M24
0.945
M27
1.06
M30
1.18
8.8
3.1
2.8
6.5
5.9
11
10
19
17
27
25
53
49
93
85
148
136
230
212
391
294
447
413
608
562
774
714
1134
1046
1538
1420
10.9
4.5
4.1
9.2
8.5
16
14
26
24
38
35
75
69
130
120
212
195
322
298
455
418
629
581
856
790
1089
1005
1591
1469
2163
1997
12.9
5.4
4.9
11
10
19
17
31
28
45
42
89
83
156
144
248
228
387
357
532
490
756
698
1029
949
1306
1206
1910
1763
2595
2395
NOTE 1: Torque values for fine threads are 8% higher.
Bolt Diameter - Metric
TORQUE VALUES (Pounds - Foot)
Grade
M4
0.157
M5
0.197
M6
0.236
M7
0.276
M8
0.315
M10
0.394
M12
0.472
M14
0.551
M16
0.630
M18
0.709
M20
0.787
M22
0.866
M24
0.945
M27
1.06
M30
1.18
8.8
2.3
2.1
4.8
4.3
8.1
7.4
14.0
12.5
20
18
39
36
69
63
109
100
170
156
235
217
329
304
448
414
548
526
836
771
1134
1047
10.9
3.3
3.0
6.8
6.3
11.8
10.3
19.0
17.6
29
26
55
51
96
88
156
144
237
220
335
308
464
428
631
582
803
741
1173
1083
1594
1472
12.9
4.0
3.6
8.1
7.4
14.0
12.5
23.0
20.6
33
31
66
61
115
106
183
168
285
263
392
361
557
514
758
699
963
889
1408
1299
1913
1765
NOTE 1: Torque values for fine threads are 8% higher.