18
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
Do
n
ot
s
el
e
c
t
to
t
h
e
l
e
ft
o
f
th
is
s
y
s
te
m
c
u
rv
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
