Sfb-18 - belt drive, Sfb-18 – Greenheck Fan Centrifugal Utility Fans SFB User Manual
Page 20
20
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 = 18
1
⁄
8
(460)
Shaft Diameter = 1
(25)
Outlet Area = 2.29 ft
2
(0.213 m
2
)
Mounting Hole Size = 1/2
(13)
^Approximate Unit Weight = 265 lb.
(120 kg)
All dimensions in inches
(millimeters)
For additional discharge positions see page 12
^Weight shown is largest cataloged Open Drip Proof motor
SFB-18 - 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
2725
1188
RPM
364
464
550
BHP
0.29
0.44
0.60
Sones
8.4
9.2
10.2
3150
1374
RPM
388
481
563
635
BHP
0.39
0.56
0.74
0.93
Sones
10.3
10.1
11.2
12.6
3575
1559
RPM
415
500
578
648
712
BHP
0.52
0.70
0.90
1.11
1.33
Sones
11.1
11.3
12.2
13.4
15.5
4000
1744
RPM
444
524
596
662
725
782
836
BHP
0.68
0.89
1.10
1.32
1.56
1.80
2.03
Sones
12.0
13.1
13.1
14.0
15.8
17.7
19.5
4425
1930
RPM
473
548
615
680
738
795
848
898
943
BHP
0.87
1.09
1.32
1.57
1.81
2.08
2.34
2.60
2.86
Sones
13.6
14.7
14.0
14.4
15.9
17.8
19.7
21
23
4850
2115
RPM
503
573
638
698
756
809
861
910
957
1001
BHP
1.09
1.34
1.59
1.85
2.12
2.38
2.68
2.97
3.26
3.54
Sones
15.5
15.8
14.8
14.8
16.2
18.1
20
22
24
25
5275
2300
RPM
534
601
662
719
774
826
875
923
970
1013
BHP
1.36
1.63
1.90
2.17
2.46
2.75
3.04
3.35
3.67
3.99
Sones
17.7
17.1
15.6
15.6
16.7
18.7
20
22
24
26
5700
2486
RPM
566
630
687
743
793
844
893
938
982
1026
BHP
1.67
1.96
2.24
2.55
2.83
3.15
3.47
3.78
4.11
4.46
Sones
19.2
18.6
16.9
16.6
17.9
19.5
21
23
25
26
6125
2671
RPM
599
660
714
767
817
863
911
956
998
1039
BHP
2.03
2.34
2.64
2.96
3.28
3.58
3.94
4.28
4.61
4.95
Sones
20
20
18.5
18.0
19.4
21
22
24
26
27
6550
2857
RPM
631
689
743
791
840
886
929
974
1016
BHP
2.43
2.76
3.09
3.41
3.77
4.10
4.43
4.81
5.18
Sones
22
21
20
20
21
22
24
26
27
6975
3042
RPM
664
720
771
818
865
909
951
992
1034
BHP
2.88
3.23
3.60
3.93
4.30
4.67
5.02
5.38
5.78
Sones
24
23
23
22
23
24
26
27
29
Do
n
ot
s
e
le
c
t
to
th
e
l
e
ft
o
f
th
is
s
y
s
te
m
c
u
rv
e
cfm
30
7
⁄
8
(784)
19
3
⁄
8
(492)
1
1
⁄
2
(38)
23
3
⁄
8
(594)
25
1
⁄
8
(638)
22
3
⁄
8
(568)
42
(1067)
19
5
⁄
8
(498)
13
3
⁄
4
(349)
33
1
⁄
4
(845)
22
(559)
17
3
⁄
4
(451)
2
(51)
19
1
⁄
4
(489)
18
(457)
35
(889)
36
7
⁄
8
(937)
Maximum BHP at given RPM = (RPM/614)
3
(Maximum KW at a given RPM = (RPM/677)
3
)
Maximum RPM = 1050 and Minimum RPM = 310
Tip Speed (ft/min.) = RPM x 4.75
(Tip Speed (m/s) = RPM x 0.0241)
Maximum Motor Frame Size = 184T
SFB-18