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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 Pressure (in. wg)
Volume (cfm X 1000)
Volume (m
3
/hr x 1000)
Static Pressure (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
698698
588588
514514
467467
20 20
15 15
10 10
7½ 7½
5 5
3 3
2 2
1½ 1½
SWB-336-AF