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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-327 - Belt Drive
Series 300
SWB-327
Wheel Diameter = 27 (686)
Shaft Diameter = 1
11
⁄16 (43)
Outlet Area = 4.19 ft
2
(0.389 m
2
)
^Approximate Unit Weight = 917 lb. (417 kg)
All dimensions in inches (millimeters)
For additional discharge positions see page 13
^Weight shown includes largest cataloged Open Drip Proof motor and weatherhood
61
3
⁄4
(1568)
28
1
⁄2 (724)
35
3
⁄4 (908)
3
1
⁄2
(89)
28
3
⁄4
(730)
33
(838)
28
5
⁄8
(727)
46
1
⁄4
(1175)
50
7
⁄8
(1292)
33 (838)
48
1
⁄4 (1226)
52
7
⁄16 (1332)
30
(762)
21
7
⁄16
(545)
32
(813)
21
1
⁄4
(540)
4
3
⁄16
(106)
Maximum BHP at a given RPM = (RPM/629)
3
(Maximum KW at a given RPM = (RPM/693)
3
)
Maximum RPM = 1425
Tip Speed (ft/min.) = RPM x 7.07
(Tip Speed (m/s) = RPM x 0.0359)
Maximum Motor Frame Size = 256T
CFM OV
Static Pressure in Inches wg
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
5000 1193
RPM 551 663 756 841
BHP 0.66 1.10 1.57 2.08
Sones / LwiA 10.3 / 72 11.8 / 75 13.2 / 77 14.9 / 79
5900 1408
RPM 604 712 800 878 953 1022
BHP 0.89 1.40 1.92 2.48 3.07 3.69
Sones / LwiA 11.5 / 74 12.9 / 76 14.1 / 78 15.6 / 79 17.6 / 81 19.6 / 83
6800 1622
RPM 666 764 849 923 991 1058 1120 1179 1234
BHP 1.17 1.75 2.34 2.95 3.59 4.26 4.96 5.67 6.40
Sones / LwiA 12.9 / 76 14 / 77 15.2 / 79 16.6 / 80 18.2 / 82 19.9 / 83 22 / 85 24 / 86 26 / 88
7700 1837
RPM 731 815 900 971 1037 1098 1157 1215 1270 1322
BHP 1.53 2.17 2.83 3.50 4.19 4.91 5.65 6.43 7.22 8.02
Sones / LwiA 14.5 / 78 15.2 / 79 16.6 / 80 18.1 / 81 19.4 / 83 21 / 84 22 / 85 24 / 86 26 / 88 28 / 89
8600 2052
RPM 801 872 951 1022 1085 1145 1201 1253 1307 1358
BHP 1.97 2.65 3.40 4.14 4.88 5.66 6.45 7.26 8.11 8.97
Sones / LwiA 16.3 / 80 17 / 80 18.3 / 81 19.7 / 83 21 / 84 22 / 85 24 / 86 25 / 87 27 / 88 29 / 89
9500 2267
RPM 871 934 1003 1074 1136 1194 1248 1299 1348 1395
BHP 2.51 3.23 4.03 4.86 5.67 6.50 7.35 8.21 9.10 10.0
Sones / LwiA 18.5 / 82 19.2 / 82 20 / 83 21 / 84 23 / 85 25 / 87 26 / 88 28 / 89 29 / 89 30 / 90
10400 2482
RPM 942 997 1059 1125 1188 1244 1297 1347 1395
BHP 3.14 3.90 4.76 5.66 6.56 7.45 8.35 9.27 10.2
Sones / LwiA 21 / 84 22 / 84 22 / 85 24 / 86 26 / 87 27 / 88 29 / 89 31 / 90 32 / 91
11300 2696
RPM 1014 1066 1121 1177 1239 1296 1348 1397
BHP 3.89 4.70 5.59 6.55 7.53 8.51 9.47 10.5
Sones / LwiA 24 / 86 24 / 86 25 / 87 27 / 88 28 / 89 31 / 90 32 / 91 33 / 91
12200 2911
RPM 1086 1135 1184 1236 1291 1347 1400
BHP 4.74 5.62 6.54 7.55 8.60 9.66 10.7
Sones / LwiA 27 / 88 28 / 88 29 / 89 30 / 90 32 / 91 34 / 92 35 / 92
13100 3126
RPM 1160 1205 1249 1298 1345 1399
BHP 5.72 6.67 7.62 8.68 9.78 10.9
Sones / LwiA 30 / 90 32 / 91 33 / 91 35 / 92 36 / 93 37 / 93
14000 3341
RPM 1233 1276 1317 1361 1407
BHP 6.83 7.85 8.87 9.94 11.1
Sones / LwiA 35 / 92 37 / 93 38 / 94 39 / 94 40 / 94
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 5 10 15 20 25 30
0
2
4
6
8
10
12
14
16
0 2 4 6 8 10 12 14 16 18
0
1
2
3
4
5
6
7
571 571
629 629
720 720
792 792
907 907
1076 1076
1231 1231
1355 1355
1425 1425
15 15
10 10
7½ 7½
5 5
3 3
2 2
1½ 1½
1 1
¾ ¾
SWB-327
RPM
HP
Density 0.075 lb/ft
3