Diameter of rotating member at clearance
Minimum diametrical clearance
in.
mm
in.
mm
<2.000
<50.00
0.010
0.25
2.000 to 2.4999
50.00 to 64.99
0.011
0.28
2.500 to 2.999
65.00 to 79.99
0.012
0.30
3.000 to 3.499
80.00 to 89.99
0.013
0.33
3.500 to 3.999
90.00 to 99.99
0.014
0.36
4.000 to 4.499
100.00 to 114.99
0.015
0.38
4.500 to 4.999
115.00 to 124.99
0.016
0.41
5.000 to 5.999
125.00 to 149.99
0.017
0.43
6.000 to 6.999
150.00 to 174.99
0.018
0.46
7.000 to 7.999
175.00 to 199.99
0.019
0.48
8.000 to 8.999
200.00 to 224.99
0.020
0.51
9.000 to 9.999
225.00 to 249.99
0.021
0.53
10.000 to 10.999
250.00 to 274.99
0.022
0.56
11.000 to 11.999
275.00 to 299.99
0.023
0.58
12.000 to 12.999
300.00 to 324.99
0.024
0.61
13.000 to 13.999
325.00 to 349.99
0.025
0.63
14.000 to 14.999
350.00 to 374.99
0.026
0.66
15.000 to 15.999
375.00 to 399.99
0.027
0.69
16.000 to 16.999
400.00 to 424.99
0.028
0.71
17.000 to 17.999
425.00 to 449.99
0.029
0.74
18.000 to 18.999
450.00 to 474.99
0.030
0.76
19.000 to 19.999
475.00 to 499.99
0.031
0.79
20.000 to 20.999
500.00 to 524.99
0.032
0.81
21.000 to 21.999
525.00 to 549.99
0.033
0.84
22.000 to 22.999
550.00 to 574.99
0.034
0.86
23.000 to 23.999
575.00 to 599.99
0.035
0.89
24.000 to 24.999
600.00 to 624.99
0.036
0.91
25.000 to 25.999
625.00 to 649.99
0.037
0.94
For diameters greater than 649.99 mm | 25.999 in., the minimum diametrical clearances shall be 0.94
mm | 0.037 in. plus 0.001 inch for each additional inch of diameter or fraction thereof (1 mm for each
additional 1 mm).
NOTICE:
The impeller hub side wear rings will have a much higher clearance for impellers 101F and
101M, as the close clearance is driven by the center bushing to center sleeve. The minimum
clearance for these rings should be as indicated in the table below:
Case rings (Center Only) (Item164)
0.76/0.81mm | 0.030/0.032in
Bushings
Replace bushing when the diametrical clearance exceeds 1.5X the values shown in this table or when
the hydraulic performance has decreased to unacceptable levels:
Bushing
Temperature
<260°C | 500°F
260°C | ≥500°F
Throttle (Item 129)
0.25/0.30mm | 0.010/0.012in
0.38/0.43mm | 0.015/0.017in
6.5 Preassembly inspections
96
Model 3600 i-FRAME API610 11th Edition / ISO 13709 2nd Edition to current API BB3 Multi-Stage, Axially Split Installa-
tion, Operation, and Maintenance Manual
Summary of Contents for GOULDS PUMPS 3600 i-FRAME
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