Bearing-frame inspection, Bearing fits and tolerances – Goulds Pumps 3700 - IOM User Manual
Page 82
Maintenance
Bearing-frame inspection
Checklist
Check the bearing frame for these conditions:
• Visually inspect the bearing frame and frame foot for cracks.
• Check the inside surfaces of the frame for rust, scale, or debris. Remove all loose and
foreign material.
• Make sure that all lubrication passages are clear.
• Inspect the inboard-bearing bores.
If any bores are outside the measurements in the Bearing fits and tolerances table, replace
the bearing frame.
Surface inspection locations
This figure shows the areas to inspect for wear on the bearing frame surface.
Figure 15: Surface inspection locations
Bearing fits and tolerances
Table 8: Bearing fits and tolerances table (SI units)
This table references the bearing fits and tolerances according to ISO 286 (ANSI/ABMA Standard 7) in
inches (millimeters).
Location
Description SA
SX
MA
MX, LA
LX, XLA
XLX
XXL
Radial
Shaft OD
1.9690
2.3628
2.1659
2.5597
2.9534
3.5440
3.9377
(50.013)
(60.015)
(55.015)
(65.015)
(75.015)
(90.018)
(100.018)
(Inboard)
1.9686
2.3623
2.1654
2.5592
2.9529
3.5434
3.9371
(50.002)
(60.002)
(55.002)
(65.002)
(75.002)
(90.003)
(100.002)
Interference
0.0001
0.0001
0.0001
0.0001
0.0001
0.0001
0.0001
(0.002)
(0.002)
(0.002)
(0.002)
(0.002)
(0.003)
(0.002)
0.0010
0.0012
0.0012
0.0012
0.0012
0.0015
0.001 (0.038)
(0.025)
(0.030)
(0.030)
(0.030)
(0.030)
(0.038)
Bearing ID
1.9680
2.3616
2.1647
2.5585
2.9522
3.5425
3.9362
(49.988)
(59.985)
(54.985)
(64.985)
(74.985)
(89.980)
(99.980)
1.9685
2.3622
2.1653
2.5591
2.9528
3.5433
3.9370
(50.000)
(60.0000
(55.000)
(65.000)
(75.000)
(90.000)
(100.000)
Frame ID
3.5433
4.3307
3.9370
4.7244
5.1181
6.2992
7.0866
(90.000)
(110.000)
(100.000)
(120.000)
(130.000)
(160.000)
(180.000)
3.5442
4.3316
3.9378
4.7253
5.1191
6.3002
7.0875
(90.022)
(110.022)
(100.022)
(120.022)
(130.025)
(160.025)
(180.023)
Clearance
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
(0.000)
(0.000)
(0.000)
(0.000)
(0.000)
(0.000)
(0.000)
0.0015
0.0015
0.0015
1.0015
0.0017
0.0020
0.0012
(0.037)
(0.037)
(0.037)
(0.037)
(0.043)
(0.050)
(0.048)
Bearing OD
3.5483
4.3307
3.9390
4.7244
5.1181
6.2992
7.0866
(90.000)
(110.000)
(100.000)
(120.000)
(130.000)
(160.000)
(180.000)
3.5427
4.3301
3.9363
4.7238
5.1174
6.2982
7.0856
(89.985)
(110.022)
(99.985)
(119.985)
(129.982)
(159.975)
(179.975)
80
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual