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Performance certified is for installation Type B - Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not include the
effects of appurtenances (accessories). The AMCA Certified Ratings Seal applies to air performance only.
Wheel Diameter = 12
5
⁄8 (321)
Shaft Diameter = 3/4 (19)
Outlet Area = 0.856 ft
2
(0.08 m
2
)
^Approximate Unit Weight = 147 lb. (67 kg)
All dimensions in inches (millimeters)
For additional discharge positions see page 12
^Weight shown is largest cataloged Open Drip Proof motor
SFB-12 - Belt Drive
CFM OV
Static Pressure in Inches wg
0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5
825 964
RPM 455
BHP 0.07
Sones 5.7
1065 1244
RPM 493 631
BHP 0.12 0.18
Sones 6.3 9.3
1305 1525
RPM 533 665 773 871
BHP 0.18 0.25 0.33 0.40
Sones 7.1 10.2 10.3 10.5
1545 1805
RPM 580 703 806 897 983 1061
BHP 0.26 0.35 0.43 0.52 0.62 0.71
Sones 8.2 10.5 10.6 11.0 11.3 12.0
1785 2086
RPM 632 743 844 931 1010 1087 1158 1225
BHP 0.36 0.47 0.57 0.67 0.77 0.88 0.99 1.09
Sones 9.6 10.7 11.1 11.5 11.8 13.0 14.4 16.0
2025 2367
RPM 686 789 883 969 1045 1116 1185 1251 1313 1373
BHP 0.49 0.61 0.74 0.85 0.96 1.07 1.19 1.32 1.44 1.56
Sones 11.0 11.4 11.8 12.2 12.7 14.0 15.5 17.0 18.6 20
2265 2647
RPM 747 837 925 1008 1083 1152 1217 1278 1340 1399
BHP 0.67 0.79 0.93 1.06 1.19 1.31 1.44 1.56 1.70 1.84
Sones 11.8 12.2 12.6 12.9 13.9 15.2 16.6 18.1 19.8 22
2505 2928
RPM 809 889 971 1048 1122 1190 1254 1314 1370
BHP 0.88 1.00 1.15 1.30 1.45 1.59 1.73 1.87 2.00
Sones 13.0 13.2 13.5 14.1 15.3 16.6 17.9 19.5 21
2745 3208
RPM 873 943 1019 1093 1162 1230 1292
BHP 1.13 1.26 1.41 1.58 1.75 1.91 2.06
Sones 14.5 14.4 14.6 15.6 16.7 18.0 19.5
2985 3489
RPM 937 1001 1071 1140 1205
BHP 1.43 1.56 1.72 1.90 2.08
Sones 16.1 15.8 16.2 17.1 18.2
3225 3769
RPM 1002 1062 1124
BHP 1.77 1.92 2.08
Sones 17.8 17.4 17.8
D
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o
t
s
e
l
e
c
t
t
o
t
h
e
l
e
f
t
o
f
t
h
i
s
s
y
s
t
e
m
c
u
r
v
e
cfm
13
5
⁄8
(346)
1
1
⁄2
(38)
16 (406)
16
7
⁄8 (429)
15
1
⁄8
(384)
28
3
⁄8
(721)
13
1
⁄4
(337)
9
3
⁄4
(248)
21
3
⁄8
(543)
22
1
⁄4
(565)
15
1
⁄2
(394)
9
(229)
2
(51)
13
(330)
12 (305)
20
7
⁄8 (530)
22
1
⁄2 (572)
Maximum BHP at given RPM = (RPM/1111)
3
(Maximum KW at a given RPM = (RPM/1225)
3
)
Maximum RPM = 1400 and Minimum RPM = 370
Tip Speed (ft/min.) = RPM x 3.30
(Tip Speed (m/s) = RPM x 0.0168)
Maximum Motor Frame Size = 145T
SFB-12