PIVOTS ET CUAPAUMNES
253
TABLE
DONNANT LE TRAVAIL ABSORBÉ PAR LE FROTTEMENT DES PIVOTS DANS L’tlYPOTHF.SB D’UNKCHARGE CONSTANTE DE 100 KILOGRAMMES, OU D’cN QUINTAL MÉTRIQUE, EN ADMETTANT UNCOEFFICIENT DE FROTTEMENT DE 0.075.
NOMBRE I)E RÉVOLUTIONS DE L’ARBRE PAR MINUTE.
des
pivols.
50
73
! o
°
150
200
250
300
400
millim.
kilogr.mèt.
kilogr.mèt.
kilogr.mèt.
kilogr.mèt.
kilogr.mèt.
kilogr.mèt.
kilogr.mèt.
kilogr.mèt.
10
0.131
0.196
0.262
0.393
0.524
0.655
0.786
1.048
11
0.144
0.216
0.288
0.432
0.576
0.720
0.865
1.152
4 2
0.157
0.236
0.314
0.472
0.629
0.786
0.943
1.258
13
0.170
0.255
0.341
0.511
0.681
0.851
1.022
1.362
U
0.183
0-273
0.367
0.550
0.734
0.917
1.100
1.467
15
0.196
0.295
0.393
0.589
0.786
0.982
1.179
1.572
16
0.210
0.314
0.419
0.629
0.838
1.048
1.258
1.676
17
0.223
0.334
0.445
0.668
0.891
1.113
1.336
1.780
18
0.236
0.354
0.472
0.707
0.943
1.179
1.415
1.886
19
0.249
0.373
0.498
0.747
0.996
1.244
1.493
1.991
20
0.262
0.393
0.524
0.786
1.048
1.310
1.57-2
2.096
22
0.288
0.432
0.576
0.865
1.153
1.441
1.729
2.305
24
0.314
0.472
0.629
0.943
1,258
1.572
1.886
2.515
25
0.327
0.491
0.655
0.982
1.310
1.637
1.965
2.620
26
0.341
0.511
0.681
1.022
1.. 362
1.703
2.044
2.724
28
0.367
0.550
0.734
1.100
1.167
1.834
2.208
2.934
30
0.393
0.589
0.786
1.179
1.572
1.965
2.358
3.144
35
0.458
0.688
0.917
1.375
1.834
2.292
2.751
3.668
40
0.524
0.786
1.048
1.572
2.096
2.620
3.144
4.192
45
0.589
0.884
1.179
1.768
2.358
2.947
3.537
4.716
50
0.655
0.982
1.310
1.965
2.620
3.275
3.930
5.240
55
0.720
1.081
1.441
2.161
2.882
3.602
4.323
5.764
60
0.786
1.179
1.572
2.358
3.144
3.930
4.716
6.288
65
0.831
1.277
1.703
2.554
3.406
4.257
5.109
6.812
70
0.917
1.375
1.834
2.751
3.668
4.585
5.502
7.336
75
0.982
1.474
1.965
2.947
3.930
4.912
5.895
7.860
80
1.048
1.872
2.096
3.144
4.192
5.240
6.288
8.384
85
1.113
1.670
2.227
3.340
4.454
5.567
6.681
8.908
90
1.179
1.768
2.358
3.537
4.716
5.895
7.074
9.432
95
1.244
1.867
2.489
3.733
4.978
6.222
7.467
9.956
100
1.310
1.965
2 620
3.930
5.240
6.550
7.860
10.480
110
1.441
2.161
2.882
4.323
5.764
7.205
8.646
11.528
120
1.572
2.358
8.144
4.716
6.288
7.860
9.432
12.576
130
1.703
2.554
3.406
5.109
6.812
8.515
10.218
13.624
140
1.834
2.751
3.658
5.502
7.336
9,170
11.004
14.672
150
1.965
2.947
3.930
5.895
7.860
9.825
11.790
15.720
160
2.096
3.144
4.192
6.288
8.384
10.480
12.576
16.768
170
2.227
3.340
4.454
6.671
8.908
11.125
13.362
17.816
180
2.358
3.537
4.716
7.074
9.432
11.790
14.148
48.864
190
2.489
3.733
4.978
7.467
9.956
12.445
14.934
19.912
200
2.620
3.930
5.240
7.860
10.480
13.100
15.720
20.961