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 only.
58
SWB-344 - 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 = 2127 lb.
(967 kg)
All dimensions in inches
(millimeters)
For additional discharge positions see page 13
^Weight shown includes largest cataloged Open Drip Proof motor and weatherhood
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)
Maximum BHP at a given RPM = (RPM/271)
3
(Maximum KW at a given RPM = (RPM/299)
3
)
Maximum RPM = 847
Tip Speed (ft/min.) = RPM x 11.65
(Tip Speed (m/s) = RPM x 0.0592)
Maximum Motor Frame Size = 324T
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
350
413
468
517
563
BHP
2.12
3.38
4.67
6.06
7.55
Sones / LwiA 10.7 / 72
12.5 / 74
14.6 / 76
16.6 / 78
17.7 / 80
17000 1492
RPM
381
436
490
537
580
621
660
BHP
2.70
4.12
5.54
7.02
8.60
10.3
12.0
Sones / LwiA 12.7 / 74
14.6 / 76
16.9 / 78
17.7 / 80
19.2 / 81
21 / 83
23 / 84
19000 1668
RPM
413
463
513
559
600
639
677
712
745
BHP
3.39
4.95
6.54
8.15
9.81
11.6
13.4
15.3
17.2
Sones / LwiA 14.9 / 76
17.1 / 78
18.7 / 80
19.4 / 81
21 / 82
23 / 84
24 / 85
25 / 86
27 / 87
21000 1843
RPM
446
492
537
582
622
659
694
730
763
794
BHP
4.23
5.89
7.67
9.42
11.2
13.1
14.9
17.0
19.0
21.1
Sones / LwiA 17.6 / 79
20 / 80
20 / 81
21 / 83
23 / 84
25 / 85
26 / 86
27 / 87
28 / 88
29 / 88
23000 2019
RPM
481
522
563
605
645
682
716
748
780
811
BHP
5.21
6.99
8.91
10.9
12.8
14.7
16.7
18.8
21.0
23.2
Sones / LwiA
21 / 81
22 / 82
22 / 83
24 / 84
25 / 86
27 / 87
28 / 87
29 / 88
30 / 88
31 / 89
25000 2194
RPM
516
554
592
629
668
704
738
770
800
829
BHP
6.35
8.26
10.3
12.4
14.5
16.6
18.7
20.9
23.1
25.4
Sones / LwiA
23 / 83
23 / 84
24 / 85
26 / 86
28 / 87
29 / 88
30 / 88
31 / 89
32 / 89
33 / 90
27000 2370
RPM
551
585
621
657
692
727
761
792
822
BHP
7.67
9.69
11.9
14.1
16.4
18.6
20.9
23.2
25.6
Sones / LwiA
25 / 85
26 / 86
27 / 87
29 / 88
30 / 88
31 / 89
32 / 89
33 / 90
34 / 91
29000 2546
RPM
586
619
652
685
718
751
784
815
844
BHP
9.18
11.3
13.6
16.0
18.4
20.9
23.3
25.7
28.2
Sones / LwiA
28 / 87
29 / 88
30 / 88
31 / 89
32 / 89
33 / 90
34 / 91
35 / 91
37 / 92
31000 2721
RPM
622
653
684
715
746
775
807
838
BHP
10.9
13.2
15.6
18.0
20.6
23.3
25.9
28.4
Sones / LwiA
31 / 89
32 / 90
33 / 90
34 / 90
35 / 91
36 / 91
37 / 92
38 / 92
33000 2897
RPM
658
688
716
746
775
804
831
BHP
12.8
15.2
17.7
20.4
23.0
25.8
28.7
Sones / LwiA
35 / 91
36 / 91
36 / 91
37 / 92
38 / 92
39 / 92
40 / 93
35000 3072
RPM
695
723
749
777
804
832
BHP
15.0
17.5
20.1
22.9
25.7
28.6
Sones / LwiA
38 / 92
38 / 92
39 / 93
40 / 93
41 / 93
42 / 94
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
10
20
30
40
50
60
70
80
0
2
4
6
8
10
12
14
16
0
10
20
30
40
50
0
1
2
3
4
5
6
7
391
391
463
463
530
530
584
584
668
668
736
736
792
792
847
847
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
