|
Effective November 1, 2000
TABLE 1
INTERFERENCE FITS FOR
OVERHUNG PUMP CASE RINGS
AND BEARINGS |
Diameter of
Press Fit
Component
(inches) |
Recommended
Diametrical
Interference
(inches) |
|
1 Inch |
.003 Inch |
|
2 |
.003 |
|
3 |
.003 |
|
4 |
.004 |
|
5 |
.005 |
|
6 |
.006 |
|
7 |
.007 |
|
8 |
.008 |
|
9 |
.009 |
|
10 |
.010 |
|
11 |
.010 |
|
12 |
.010 |
|
13 to 16 |
.014 |
|
17 to 24 |
.016 |
|
Above 24 |
Call Factory |
TABLE 2
FACTORY SET CLEARANCES AND STANDARDS FOR
SIMSITEŽ CASING WEAR RING TO SIMSITE IMPELLER WEAR RING
DRY CLEARANCE |
O.D. Impeller
Wear Ring
(inches) |
Diametrical Clearance
(Dry)
And Tolerance
(inches) |
Recommended
Maximum Clearance
(Dry)
Before Replacement
(inches) |
|
2 |
.024 +/- .004 |
.030 |
|
3 |
.026 +/- .004 |
.034 |
|
4 |
.028 +/- .004 |
.036 |
|
5 |
.030 +/- .005 |
.038 |
|
6 |
.032 +/- .005 |
.040 |
|
7 |
.035 +/- .005 |
.045 |
|
8 |
.038 +/- .005 |
.048 |
|
9 |
.042 +/- .005 |
.052 |
|
10 |
.044 +/- .005 |
.054 |
|
Above 10 inches |
Consult Factory |
Consult Factory |
Notes
I.) All installation clearances are based on the components being dry.
When reusing a SimsiteŽ
Wear Ring, allow the ring to dry for 24 hours before taking dry
clearance measurements.
2.) When machining SimsiteŽ Rings, the minimum wall thickness is .187
inches.
3.) When installing set screws to secure SimsiteŽ Rings, the Casing
Ring inner diameter should be checked for possible distortion after
the set screws are installed. If the distortion is greater than .002
in. then a final machining cut must be taken to maintain the necessary
operating clearance.
4.) The recommended maximum clearance before replacement should be
used as a guide. Pump performance should be the final element in
determining whether the parts are replaced.
TABLE 3
SIMSITEŽ GUIDE BEARING CLEARANCES WHEN
RUNNING SIMSITE A SIMSITE SHAFT OR SLEEVE ON SIMSITE BEARINGS |
Shaft
or Sleeve Diameter
(inches) |
Recommended Dry
Diametrical Clearance
and Tolerance
(inches) |
|
1 |
.010 +/- .002 |
|
2 |
.014 +/- .002 |
|
3 |
.016 +/- .002 |
|
4 |
.018 +/- .002 |
|
5 |
.020 +/- .002 |
|
6 |
.022 +/- .003 |
|
7 |
.024 +/- .003 |
|
8 |
.026 +/- .003 |
|
9 |
.028 +/- .003 |
|
10 |
.030 +/- .003 |
|
Above 10 Inches |
Consult Factory |
1.) All
installation clearances are based on the components being dry. When
reusing a bearing, allow it to dry for 24 hours before taking dry
clearance measurements.
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