TABLE
12
GENERAL
PURPOSE
ROPES
SHEAVE
AND
DRUM
GROOVE
DIMENSIONS*
Groove
Radius
Nominal Minimum Recommended
Rope
Worn
Minimum
Maximum
Diameter Groove
New
Groove Groove
inches mm** inches
rum
inches
mm
inches
mm
114
6.5 0.128 3.25 0.134 3.40 0.138
3.51
5/16
8
0.160 4.06 0.167
4.24
0.172
4.37
3/8
9.5
0.192 4.88 0.199 5.05
0.206
5.23
7/16
11
0.224 5.69 0.232 5.89
0.241
6.12
112
13
0.256 6.50
0.265
6.73 0.275 6.99
9/16
14.5
0.288 7.32 0.298
7.57
0.309
7.85
5/8
16
0.320
8.13
0.331
8.41
0.344 8.74
3/4
19
0.384 9.75 0.398
10.11
0.413
10.49
7/8 22 0.448 11.38 0.464
11.79
0.481
12.22
1 26 0.513
13.03
0.530
13.46 0.550
13.97
1
118
29 0.577 14.66 0.596
15.14
0.619
15.72
1114
32
0.641
16.28
0.663
16.84
0.688 17.48
1
3/8
35
0.705
17.91
0.729
18.52
0.756 19.20
1112
38
0.769
19.53
0.795 20.19 0.825 20.96
1 5/8 42 0.833 21.16
0.861
21.87 0.894
22.71
1 3/4
45
0.897
22.78 0.928
23.57
0.963
24.46
1 7/8 48
0.961
24.41
0.994
25.25
1.031
26.19
2 52
1.025
26.04 1.060
26.92
1.100
27.94
21/8 54
1.089
27.66
1.126
28.60
1.169
29.69
2114
58
1.153
29.29
1.193
30.30
1.238
31.45
* Values given are applicable to 2
3/8
60 1.217
30.91
1.259
31.98
1.306
33.17
grooves in sheaves and drums; they
21/2
64
1.281
32.54
1.325
33.66
1.375
34.93
are not generally suitable for pitch
25/8 67
1.345
34.16
1.391
35.33 1.444
36.68
design since this may involve other
23/4
71
1.409 35.79
1.458
37.03
1.513
38.43
factors.
27/8
74
1.473
37.41
1.524
38.71
1.581
40.16
**Not a precise conversion; for
3 77
1.537
39.04
1.590
40.39 1.650
41.91
information only.
31/8
80
1.602
40.69
1.656
42.06 1.719
43.66
3114
83
1.666
42.32
1.723
43.76
1.788
45.42
Further, the dimensions do not apply
3
3/8
86
1.730 43.94
1.789
45.44 1.856 47.14
to traction-type elevators; in this cir-
3112
90
1.794
45.57
1.855
47.12
1.925
48.90
cumstance, drum-and sheave-groove
33/4
96
1.922
48.82
1.988
50.50
2.063 52.40
tolerances should conform to the ele-
vator manufacturer's specifications.
4
103
2.050 52.07 2.120
53.85 2.200 55.88
4114
109
2.178 55.32
2.253
57.23 2.338 59.39
Modern drnm design embraces exten-
4112
115
2.306
58.57
2.385 60.58
2.475
62.87
sive considerations beyond the scope
4 3/4 122 2.434 61.82 2.518
63.96 2.613 66.37
of
this publication. It should also be
5
128
2.563 65.10
2.650
67.31
2.750 69.85
noted that drnm grooves are now pro-
5114
135
2.691
68.35
2.783
70.69
2.888
73.36
duced with a number
of
oversize
dimensions and pitches applicable to
5112
141
2.819 71.60 2.915
74.04 3.025
76.84
5 3/4 148 2.947
74.85
3.048
77.42
3.163
80.34
certain scrvice requirements.
6 154 3.075
78.11
3.180 80.77
3.300
83.82
56 • Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition
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