59
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 sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown
are for inlet LwiA sound power levels and inlet hemispherical sone levels for installation type B: Free inlet, Ducted outlet, calculated per AMCA Standard 301. The AMCA
Certified Ratings Seal applies to air performance and LwiA values only.
SWB-344-AF - Belt Drive
Series 300
Wheel Diameter = 44
1
⁄
2
(1130)
Shaft Diameter = 2
7
⁄
16
(62)
Outlet Area = 11.39 ft
2
(1.06 m
2
)
^Approximate Unit Weight = 1997 lb.
(908 kg)
All dimensions in inches
(millimeters)
For additional discharge positions see page 13
^Weight shown includes largest cataloged Open Drip Proof motor and weatherhood
Maximum BHP at a given RPM = (RPM/291)
3
(Maximum KW at a given RPM = (RPM/321)
3
)
Maximum RPM = 860
Tip Speed (ft/min.) = RPM x 11.65
(Tip Speed (m/s) = RPM x 0.0592)
Maximum Motor Frame Size = 324T
98
5
⁄
8
(2505)
36
3
⁄
4
(933)
53
7
⁄
8
(1368)
3
1
⁄
2
(89)
46
5
⁄
8
(1184)
52
(1321)
47
1
⁄
8
(1197)
73
3
⁄
8
(1864)
78
7
⁄
8
(2003)
50
(1270)
70
5
⁄
16
(1786)
75 (
1905)
38
3
⁄
16
(970)
35
1
⁄
4
(895)
50
1
⁄
2
(1283)
32
5
⁄
16
(821)
4
11
⁄
16
(119)
CFM
OV
Static Pressure in Inches wg
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
15000 1316
RPM
376
433
484
532
BHP
2.03
3.26
4.56
5.86
Sones / LwiA 10.1 / 71
11.8 / 72
13.9 / 75
15.5 / 77
17000 1492
RPM
411
463
511
555
597
BHP
2.56
3.94
5.38
6.85
8.32
Sones / LwiA
12 / 73
13.7 / 75
15.6 / 77
16.8 / 78
18.2 / 79
19000 1668
RPM
447
494
539
581
621
659
694
BHP
3.20
4.74
6.29
7.93
9.57
11.2
12.9
Sones / LwiA 14.3 / 76
15.8 / 77
17.2 / 78
18.6 / 79
19.9 / 81
21 / 82
22 / 82
21000 1843
RPM
485
528
570
609
646
682
717
750
BHP
3.97
5.64
7.34
9.09
10.9
12.7
14.5
16.4
Sones / LwiA 16.9 / 78
18 / 79
19.2 / 80
21 / 81
22 / 82
23 / 83
23 / 83
24 / 84
23000 2019
RPM
524
562
601
639
674
707
740
773
804
833
BHP
4.87
6.66
8.54
10.4
12.3
14.4
16.3
18.3
20.3
22.3
Sones / LwiA 19.5 / 81
20 / 81
22 / 82
23 / 83
24 / 84
24 / 84
25 / 85
25 / 85
26 / 86
26 / 86
25000 2194
RPM
563
598
634
670
703
736
766
797
827
856
BHP
5.92
7.83
9.87
11.9
13.9
16.1
18.2
20.4
22.5
24.7
Sones / LwiA
22 / 83
23 / 83
24 / 84
26 / 85
26 / 85
26 / 85
26 / 86
27 / 86
27 / 87
28 / 88
27000 2370
RPM
602
634
668
701
734
765
795
823
851
BHP
7.12
9.16
11.3
13.5
15.7
17.9
20.2
22.6
25.0
Sones / LwiA
25 / 85
26 / 85
27 / 86
27 / 86
27 / 86
27 / 87
28 / 87
28 / 88
29 / 88
29000 2546
RPM
642
672
703
734
765
795
823
851
BHP
8.50
10.66
12.9
15.3
17.6
20.0
22.4
24.9
Sones / LwiA
28 / 87
29 / 88
29 / 87
29 / 87
29 / 87
29 / 88
29 / 88
30 / 89
31000 2721
RPM
682
711
739
769
797
826
854
BHP
10.1
12.4
14.7
17.2
19.8
22.3
24.8
Sones / LwiA
31 / 89
31 / 89
31 / 89
31 / 89
30 / 89
31 / 89
31 / 90
33000 2897
RPM
722
750
775
803
831
858
BHP
11.8
14.2
16.7
19.4
22.1
24.8
Sones / LwiA
33 / 90
33 / 90
33 / 90
33 / 90
33 / 90
33 / 90
35000 3072
RPM
762
789
813
839
BHP
13.8
16.3
19.0
21.7
Sones / LwiA
35 / 92
35 / 92
35 / 92
35 / 92
Static Pr
essur
e (in. wg)
Volume (cfm X 1000)
Volume (m
3
/hr x 1000)
Static Pr
essur
e (Pa x 100)
D
o
no
t
se
le
c
t
to
t
h
e
l
e
ft
o
f
th
is
s
y
s
te
m
c
u
rv
e
0
20
40
60
0
2
4
6
8
10
12
14
0
5
10
15
20
25
30
35
40
45
0
1
2
3
4
5
6
420
420
498
498
570
570
627
627
718
718
790
790
860
860
30
30
25
25
20
20
15
15
10
10
7½
7½
5
5
3
3
RPM
HP
Density 0.075 lb/ft
3
SWB-344-AF
