KSB GIW MDX - Page 48

MDX [en-US]
48
Shaft Size
Minimum Nose Gap
Minimum Nose
Gape for
Urethane Liners
(1)
Example Cross-Section Shown
1 Impeller
2 Suction Liner
3 Urethane Thickness
4 Nose Gap
Conventional
Limited End
Float
inch mm inch mm inch mm
3 - 15/16 0.07 1.78 0.012 0.30
0.0001 x Urethane Thickness
(2)
x ΔT(°F)
(3)
+ Minimum Nose Gap
0.00018 x Urethane Thickness
(2)
x ΔT(°C)
(3)
+ Minimum Nose Gap
5 - 7/16 0.09 2.29 0.012 0.30
6 - 7/16 0.09 2.29 0.012 0.30
7 - 3/16 0.09 2.29 0.012 0.30
9 0.11 2.79 0.012 0.30
10 - 1/4 0.12 3.05 0.015 0.38
11 - 1/2 0.13 3.30 – –
(1)
Additional nose gap required to account for thermal expansion of urethane.
(2)
Measure urethane thickness at nose gap location.
(3)
ΔT = Operating Temperature - Ambient Temperature.
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