55
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-336-AF - Belt Drive
Series 300
Wheel Diameter = 36
1
⁄
2
(927)
Shaft Diameter = 2
3
⁄
16
(56)
Outlet Area = 7.66 ft
2
(0.712 m
2
)
^Approximate Unit Weight = 1445 lb.
(657 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/408)
3
(Maximum KW at a given RPM = (RPM/450)
3
)
Maximum RPM = 1047
Tip Speed (ft/min.) = RPM x 9.56
(Tip Speed (m/s) = RPM x 0.0485)
Maximum Motor Frame Size = 286T
82
3
⁄
4
(2102)
31
7
⁄
8
(810)
45
5
⁄
16
(1151)
3
1
⁄
2
(89)
38
1
⁄
4
(972)
44
1
⁄
2
(1130)
38
11
⁄
16
(983)
61
(1549)
67
1
⁄
8
(1705)
41
1
⁄
2
(1054)
59
1
⁄
8
(1502)
63
5
⁄
16
(
1608)
33
3
⁄
8
(848)
28
15
⁄
16
(735)
42
(1067)
27
1
⁄
4
(692)
4
3
⁄
16
(106)
CFM
OV
Static Pressure in Inches wg
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
12000 1566
RPM
521
583
639
693
744
792
BHP
1.80
2.80
3.82
4.89
6.00
7.06
Sones / LwiA 14.6 / 78
16.1 / 79
18.2 / 81
21 / 82
24 / 84
26 / 85
13000 1697
RPM
553
612
666
716
766
812
856
BHP
2.10
3.18
4.27
5.41
6.58
7.80
8.93
Sones
16.2 / 79
17.7 / 81
19.9 / 82
22 / 83
25 / 85
28 / 86
30 / 87
14000 1827
RPM
586
642
693
742
788
833
876
917
BHP
2.44
3.61
4.77
5.96
7.20
8.48
9.79
11.0
Sones / LwiA
18 / 81
19.6 / 82
21 / 83
23 / 84
26 / 85
30 / 87
34 / 88
34 / 89
15000 1958
RPM
620
673
723
769
813
856
897
937
976
BHP
2.84
4.06
5.31
6.57
7.87
9.21
10.6
12.0
13.3
Sones / LwiA
20 / 83
22 / 84
22 / 84
24 / 85
26 / 86
31 / 88
37 / 89
40 / 90
40 / 91
16000 2088
RPM
654
705
752
796
839
879
920
959
996
1032
BHP
3.28
4.56
5.89
7.23
8.59
9.99
11.4
12.9
14.4
15.8
Sones / LwiA
22 / 84
23 / 85
24 / 85
25 / 86
27 / 87
31 / 88
37 / 90
44 / 91
47 / 92
45 / 93
17000 2219
RPM
688
737
782
825
866
905
942
981
1017
BHP
3.77
5.10
6.53
7.93
9.37
10.8
12.3
13.9
15.4
Sones / LwiA
24 / 85
24 / 86
25 / 86
27 / 87
29 / 88
31 / 89
36 / 90
43 / 92
50 / 93
18000 2349
RPM
722
770
813
854
893
932
968
1003
1040
BHP
4.32
5.70
7.21
8.69
10.2
11.7
13.3
14.9
16.5
Sones / LwiA
25 / 86
26 / 87
27 / 87
28 / 88
30 / 89
32 / 90
37 / 91
42 / 92
48 / 93
19000 2480
RPM
757
802
845
884
922
959
995
1029
BHP
4.92
6.35
7.92
9.50
11.1
12.7
14.3
16.0
Sones / LwiA
27 / 87
28 / 88
28 / 88
30 / 89
31 / 90
34 / 91
37 / 92
42 / 93
20000 2610
RPM
792
836
876
915
952
986
1021
BHP
5.58
7.06
8.69
10.4
12.0
13.7
15.4
Sones / LwiA
28 / 88
29 / 89
30 / 89
31 / 90
33 / 91
35 / 92
38 / 92
21000 2741
RPM
827
869
909
946
981
1016
BHP
6.31
7.85
9.53
11.3
13.0
14.8
Sones / LwiA
30 / 89
31 / 90
32 / 90
33 / 91
35 / 92
37 / 92
22000 2872
RPM
862
903
941
977
1012
1045
BHP
7.10
8.71
10.4
12.3
14.1
15.9
Sones / LwiA
32 / 90
33 / 91
34 / 91
35 / 92
37 / 93
38 / 93
Static Pr
essur
e (in. wg)
Volume (cfm X 1000)
Volume (m
3
/hr x 1000)
Static Pr
essur
e (Pa x 100)
RPM
HP
Density 0.075 lb/ft
3
14
12
10
8
6
4
2
0
6
5
4
3
2
1
0
0 5 10
15
20
25
30
0 10 20 30 40 50
25
25
1047
1047
1006
1006
879
879
799
799
698
698
588
588
514
514
467
467
20
20
15
15
10
10
7½
7½
5 5
3 3
2
2
1½
1½
SWB-336-AF
