Waukesha Cherry-Burrell
®
Brand Universal 3 Pump Maintenance
11/2018 95-03103 Page 91
Low Viscosity Rotors: -40°F (-40°C) to 180°F (82°C); Standard Clearance Rotors: -40°F (-40°C) to 300°F (149°C). Contact
SPX FLOW Application Engineering if alternate rotors are needed.
NOTE: The assembly clearances stated in Table 18 are for reference only. Actual pump clearances may vary based on
pump performance testing.
.
NOTE: If the clearance corrections in Table 19 have been performed and desired performance is not achieved,
contact SPX FLOW technical services for guidance.
Table 18: Rotor Clearances
Universal 3
Model
A - Back Face
in (mm)
B - Rotor to Body
in (mm)
C - Front Face
in (mm)
Rotor Type Low Viscosity Standard Low Viscosity Standard Low Viscosity Standard
006
0.0025 - 0.004 0.0035 - 0.005 0.001 - 0.004 0.0025 - 0.0055 0.004 - 0.005 0.0045 - 0.0055
(0.06 - 0.10) (0.09 - 0.13) (0.03 - 0.10) (0.06 - 0.14) (0.10 - 0.13) (0.11 - 0.14)
015, 018
0.0025 - 0.0045 0.003 - 0.005 0.001 - 0.004 0.0025 - 0.0055 0.004 - 0.005 0.0055 - 0.0065
(0.06 - 0.11) (0.08 - 0.013) (0.03 - 0.10) (0.06 - 0.14) (0.10 - 0.13) (0.14 - 0.17)
030, 040
0.002 - 0.004 0.0035 - 0.0055 0.001 - 0.005 0.0025 - 0.006 0.0045 - 0.0055 0.006 - 0.007
(0.05 - 0.10) (0.09 - 0.14) (0.03 - 0.13) (0.06 - 0.15) (0.11 - 0.14) (0.15 - 0.18)
045, 060
0.003 - 0.007 0.004 - 0.008 0.003 - 0.0075 0.005 - 0.010 0.0055 - 0.0075 0.0085 - 0.0105
(0.08 - 0.18) (0.10 - 0.20) (0.08 - 0.19) (0.13 - 0.25) (0.14 - 0.19) (0.22 - 0.27)
130
0.003 - 0.007 0.004 - 0.008 0.0035 - 0.0075 0.0055 - 0.0095 0.006 - 0.007 0.009 - 0.0115
(0.08 - 0.18) (0.10 - 0.20) (0.09 - 0.19) (0.14 - 0.24) (0.15 - 0.18) (0.23 - 0.29)
180, 220
0.004 - 0.008 0.005 - 0.009 0.0055 - 0.0095 0.009 - 0.013 0.006 - 0.008 0.010 - 0.012
(0.10 - 0.20) (0.13 - 0.23) (0.14 - 0.24) (0.23 - 0.33) (0.15 - 0.20) (0.25 - 0.30)
210, 320
0.005 - 0.009 0.007 - 0.011 0.008 - 0.012 0.010 - 0.014 0.008 - 0.010 0.012 - 0.014
(0.13 - 0.23) (0.18 - 0.28) (0.20 - 0.30) (0.25 - 0.36) (0.20 - 0.25) (0.30 - 0.36)
Table 19: Backface Clearance Corrections
Problem Condition Correction
Too Much Backface
Clearance (A)
Dimension A is greater than
the value in Table 18.
A (measured) minus Column A (Table 18) =
shims to remove from the rear outer race of
the front bearing
Rotor wing face projects past
the body front face
C (measured with depth micrometer) plus C
(Table 18) = shims to remove from the rear of
the front bearing
Not Enough Backface
Clearance (A)
Dimension A is less than the
value in Table 18.
Column A (Table 18) minus A (measured) =
shims to add to the rear outer race of the front
bearing