ROOTS UNIVERSAL RAI Series, Installation Operation & Maintenance, Page: 25 / 36

24 For your nearest ROOTS Office, dial our Customer Service Hot Line 1 877 363 ROOTS (7668).
N
ORMAL
C
LEARANCES FOR
U
NIVERSAL
RAI ®
AND
URAI ™ -J, URAI ™ -G
BLOWERS
-
I
NCHES
(
MM
)
Nylok Capscrew
Bearing
Thrust Adjuster
Saddle
(ROOTS P/N 812-974-00X)
Clamp Plate
Gap (.03"-.05)
Thrust Adjuster
Fork
(ROOTS P/N 812-973-00X)
T
HRUST
S
ETTING
,
2-1/2”
THRU
5”
UNIVERSAL RAI ®
BLOWERS
Impeller Ends Cylinder Impeller
Frame Total Drive End Gear End Inlet & Center Fronts/Backs
Size Minimum Minimum Discharge Center
22 .006/.010 (.15-.25) .003 (.08) .003 (.08) .004/.005 (.10-.13) .002/.003 (.05-.08) .007/.01 (.18-.25)
24 .006/.010 (.15-.25) .003 (.08) .003 (.08) .004/.006 (.10-.15) .002/.003 (.05-.08) .007/.01 (.18-.25)
32 .006/.011 (.15-.28) .003 (.08) .003 (.08) .004/.006 (.10-.15) .002/.003 (.05-.08) .01/.012 (.25-.30)
33 .006/.011 (.15-.28) .003 (.08) .003 (.08) .004/.006 (.10-.15) .002/.003 (.05-.08) .01/.012 (.25-.30)
36 .006/.011 (.15-.28) .003 (.08) .003 (.08) .004/.006 (.10-.15) .002/.003 (.05-.08) .01/.012 (.25-.30)
42 .008/.011 (.20-.28) .004 (.10) .004 (.10) .005/.007 (.13-.18) .003/.004 (.08-.10) .009/.012 (.23-.30)
45 .008/.013 (.20-.33) .004 (.10) .004 (.10) .005/.007 (.13-.18) .003/.004 (.08-.10) .012/.015 (.30-.38)
47 .008/.013 (.20-.33) .004 (.10) .004 (.10) .005/.007 (.13-.18) .003/.004 (.08-.10) .012/.015 (.30-.38)
53 .008/.011 (.20-.28) .004 (.10) .004 (.10) .005/.008 (.13-.20) .003/.004 (.08-.10) .011/.013 (.28-.33)
56 .008/.013 (.20-.33) .004 (.10) .004 (.10) .005/.008 (.13-.20) .003/.004 (.08-.10) .015/.017 (.38-.43)
59 .008/.013 (.20-.33) .004 (.10) .004 (.10) .005/.008 (.13-.20) .003/.004 (.08-.10) .015/.017 (.38-.43)
65 .012/.016 (.30-.40) .008 (.20) .004 (.10) .006/.008 (.15-.20) .006/.008 (.15-.20) .010/.014 (.25-.36)
68 .014/.018 (.36-.46) .010 (.25) .004 (.10) .006/.008 (.15-.20) .006/.008 (.15-.20) .010/.014 (.25-.36)
615 .014/.018 (.36-.46) .010 (.25) .004 (.10) .006/.008 (.15-.20) .006/.008 (.15-.20) .010/.014 (.25-.36)
76 .012/.016 (.30-.40) .008 (.13) .004 (.10) .006/.008 (.15-.20) .006/.008 (.15-.20) .013/.015 (.33-.38)
711 .014/.018 (.36-.46) .010 (.25) .004 (.10) .006/.008 (.15-.20) .006/.008 (.15-.20) .013/.015 (.33-.38)
718 .014/.018 (.36-.46) .010 (.25) .004 (.10) .006/.008 (.15-.20) .006/.008 (.15-.20) .013/.015 (.33-.38)
K-249392
I
MPELLER
T
IMING FOR
S
TANDARD
R
OTATION
V
IEWED FROM
G
EAR
E
ND
T
ABLE
5
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