Browning Mounted Bearings Engineering - Kop-Flex - #39

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Text version of the page
Vibration Analysis Spherical Roller Bearings
Browning 22500 Series Spherical Roller Bearings - Vibration Analysis
The following is the procedure which should be followed in calculating the fundamental frequencies for Browning 22500 series spherical roller bearings.
1. The bore size for each bearing to be analyzed must be known.
2. Once the bore size is known the appropriate vibration factors (O,I,B and F) can be chosen from Table 59.
3. These factors can then be used to calculate the fundamental bearing frequencies as follows:
Roller Spin Frequency (Hz) = O x RPM
Inner Race Pass Frequency (Hz) = I x RPM
Outer Race Pass Frequency (Hz) = B x RPM
Fundamental Train Frequency (Hz) = F x RPM - shaft rotation
Table 59 Vibration Information
SHAFT SIZE (INCHES)
FACTOR FOR ROLLER SPIN
O
FACTOR FOR
INNER ROLLER PASS
I
FACTOR FOR OUTER ROLLER PASS
B
FACTOR FOR
FUND. TRAIN
F
2 7/16" 2 1/2"
0.1268
0.1786
0.1381
0.0073
2 11/16" 2 3/4"
0.1253
0.1788
0.1378
0.0073
2 15/16" 3"
0.1209
0.1701
0.1299
0.0072
3 3/16"
0.1213
0.17
0.13
0.0072
3 7/16" 3 1/2"
0.1185
0.1799
0.1366
0.0072
3 11/16"
3 15/16"
4"
0.1162
0.1803
0.1364
0.0072
4 3/16"
0.1173
0.1801
0.1366
0.0072
4 7/16" 4 1/2"
0.1186
0.1798
0.1368
0.0072
4 15/16" 5"
0.1189
0.1798
0.1369
0.0072
5 3/16"
0.1154
0.1804
0.1362
0.0072
5 7/16"
5 1/2"
0.1157
0.1804
0.1363
0.0072
5 15/16"
6"
0.1155
0.1804
0.1363
0.0072
6 7/16" 6 1/2"
0.1194
0.1892
0.1442
0.0072
6 15/16" 7"
0.1180
0.1800
0.1367
0.0072
7 3/16"
0.1155
0.1804
0.1363
0.0072
7 1/2"
7 15/16"
8"
0.1155
0.1803
0.1364
0.0072
See page 152 for trademark acknowledgments.
298

pageCatalog pdf di En 2012-05-22-30