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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 only.
SWB-349 - Belt Drive
Series 300
Wheel Diameter = 49 (1245)
Shaft Diameter = 2
7
⁄16 (62)
Outlet Area = 13.8 ft
2
(1.28 m
2
)
^Approximate Unit Weight = 2433 lb. (1106 kg)
All dimensions in inches (millimeters)
For additional discharge positions see page 13
^Weight shown includes largest cataloged Open Drip Proof motor and weatherhood
108
5
⁄16
(2751)
36
3
⁄4 (933)
58
3
⁄8 (1483)
3
1
⁄2
(89)
51
5
⁄16
(1303)
57
(1448)
51
11
⁄16
(1313)
80
5
⁄16
(2040)
86
1
⁄8
(2188)
54
1
⁄2 (1384)
73
13
⁄16 (1875)
78
1
⁄2 (1994)
38
3
⁄16
(970)
38
3
⁄4
(984)
55
(1397)
35
3
⁄16
(894)
4
11
⁄16
(119)
Maximum BHP at a given RPM = (RPM/231)
3
(Maximum KW at a given RPM = (RPM/255)
3
)
Maximum RPM = 769
Tip Speed (ft/min.) = RPM x 12.83
(Tip Speed (m/s) = RPM x 0.0652)
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
20000 1449
RPM 339 391 440 483 523 560 595
BHP 3.08 4.76 6.44 8.20 10.1 12.1 14.1
Sones / LwiA 13 / 74 14.7 / 76 16.7 / 78 18.8 / 80 20 / 81 21 / 83 23 / 84
22500 1630
RPM 368 415 461 503 541 577 611 643
BHP 3.91 5.77 7.65 9.57 11.5 13.7 15.9 18.1
Sones / LwiA 15.1 / 77 17.1 / 78 19.1 / 80 21 / 82 21 / 83 23 / 84 24 / 85 26 / 86
25000 1811
RPM 399 442 483 524 561 595 628 660 690 718
BHP 4.92 6.92 9.03 11.1 13.3 15.5 17.7 20.2 22.6 25.2
Sones / LwiA 17.6 / 79 19.7 / 80 22 / 82 23 / 83 23 / 84 25 / 85 26 / 86 28 / 87 29 / 88 31 / 89
27500 1992
RPM 431 470 508 546 582 616 647 676 706 734
BHP 6.11 8.26 10.6 12.9 15.2 17.5 19.9 22.4 25.0 27.7
Sones / LwiA 20 / 81 23 / 82 24 / 84 24 / 84 25 / 86 27 / 87 29 / 88 30 / 89 31 / 89 32 / 90
30000 2173
RPM 464 499 534 568 604 637 668 696 724 751
BHP 7.51 9.80 12.3 14.8 17.3 19.8 22.4 25.0 27.7 30.4
Sones / LwiA 24 / 83 26 / 84 26 / 85 26 / 86 28 / 87 30 / 88 31 / 89 32 / 90 33 / 90 34 / 91
32500 2355
RPM 497 529 562 594 626 658 689 717 744
BHP 9.13 11.6 14.2 16.9 19.7 22.4 25.1 27.9 30.7
Sones / LwiA 28 / 86 28 / 86 28 / 87 29 / 87 31 / 88 33 / 90 34 / 90 35 / 91 36 / 91
35000 2536
RPM 530 560 591 621 650 680 710 738 765
BHP 11.0 13.6 16.3 19.2 22.2 25.1 28.0 31.0 34.0
Sones / LwiA 29 / 87 29 / 88 30 / 88 32 / 89 34 / 90 35 / 91 36 / 91 37 / 92 38 / 92
37500 2717
RPM 564 592 620 648 676 703 732 760
BHP 13.1 15.9 18.8 21.8 24.9 28.1 31.3 34.4
Sones / LwiA 32 / 89 33 / 90 34 / 90 35 / 91 37 / 91 38 / 92 39 / 92 40 / 93
40000 2898
RPM 598 625 650 677 703 730 754
BHP 15.5 18.5 21.5 24.7 27.9 31.3 34.7
Sones / LwiA 35 / 91 36 / 91 38 / 92 39 / 92 40 / 93 41 / 93 42 / 93
42500 3079
RPM 632 657 681 707 731 756
BHP 18.2 21.3 24.5 27.8 31.2 34.8
Sones / LwiA 39 / 93 41 / 93 42 / 93 42 / 94 43 / 94 44 / 94
45000 3260
RPM 666 690 713 736 760
BHP 21.2 24.5 27.9 31.3 34.9
Sones / LwiA 44 / 94 44 / 94 45 / 95 46 / 95 46 / 95
Static Pressure (in. wg)
Volume (cfm X 1000)
Volume (m
3
/hr x 1000)
Static Pressure (Pa x 100)
D
o
n
o
t
s
e
l
e
c
t
t
o
t
h
e
l
e
f
t
o
f
t
h
i
s
s
y
s
t
e
m
c
u
r
v
e
0 20 40 60 80 100
0
2
4
6
8
10
12
14
16
0 10 20 30 40 50 60
0
1
2
3
4
5
6
7
452 452
498 498
570 570
627 627
675 675
718 718
769 769
40 40
30 30
25 25
20 20
15 15
10 10
7½ 7½
SWB-349
RPM
HP
Density 0.075 lb/ft
3
SWB-349