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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 ratings shown are loudness values in fan sones at 1.5 m (5 feet) in a hemispherical free field calculated per AMCA International Standard 301. Values shown are
for installation type B: free inlet hemispherical sone levels.
28
BSQ 120 - Belt Drive
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0.125 0.375 0.750 1.000 1.250 1.500 2.000 2.250 2.500 2.750
120
120-4 1/4
1000
CFM 1026 783
BHP 0.096 0.102
Sones 7.7 7.5
1367
CFM 1471 1311 1020
BHP 0.24 0.25 0.26
Sones 10.9 10.5 10.0
120-3 1/3
1437
CFM 1555 1403 1145
BHP 0.28 0.29 0.30
Sones 11.7 11.3 10.4
1506
CFM 1636 1492 1252 1027
BHP 0.32 0.33 0.35 0.34
Sones 12.5 12.1 11.1 10.2
120-5 1/2
1615
CFM 1764 1631 1418 1245
BHP 0.39 0.41 0.43 0.43
Sones 13.8 13.6 12.4 11.8
1724
CFM 1892 1767 1571 1423 1241
BHP 0.47 0.49 0.52 0.52 0.52
Sones 15.2 15.3 13.8 13.6 12.4
120-7 3/4 1974
CFM 2183 2075 1908 1791 1663 1518
BHP 0.71 0.73 0.76 0.78 0.78 0.78
Sones 19.0 18.9 17.6 16.9 16.4 15.7
120-10 1
2073
CFM 2298 2195 2037 1928 1813 1683 1293
BHP 0.82 0.84 0.88 0.89 0.91 0.91 0.86
Sones 21 21 19.0 18.6 17.9 17.5 15.2
2172
CFM 2413 2314 2164 2062 1953 1836 1553
BHP 0.94 0.97 1.00 1.02 1.04 1.05 1.03
Sones 23 23 21 21 19.7 19.0 17.5
120-15 1
1
⁄2
2329
CFM 2594 2503 2363 2268 2171 2069 1841 1695 1477
BHP 1.16 1.19 1.22 1.25 1.27 1.28 1.29 1.28 1.23
Sones 26 26 24 23 23 22 21 19.9 18.8
2490
CFM 2779 2694 2563 2475 2387 2294 2093 1984 1852 1682
BHP 1.41 1.44 1.49 1.51 1.54 1.55 1.58 1.58 1.57 1.53
Sones 31 30 27 26 27 26 24 23 23 22
21
(533)
19
(483)
15
7
⁄8
(403)
19
(483)
1 (25)
*12
1
⁄2
(318)
*16
(406)
*17
7
⁄8
(454)
Damper size = 16 x 16 (406 x 406)
Unit weight** = 97 (44)
Housing thickness = 18 ga
MAX Bhp AT A GIVEN RPM = (rpm/2144)
3
MAXIMUM RPM = 2490
TIP SPEED (ft/min) = rpm x 3.436
MAX NEMA MOTOR FRAME SIZE = 145T
OUTLET VELOCITY (ft/min) = 0.5805 x cfm
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
0
100
200
300
400
500
600
700
800
900
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
0 500 1000 1500 2000 2500 3000
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
1 1/2 hp
1 hp
3/4 hp
1/2 hp
1/3 hp
1/4 hp
2490
2150
1810
1470
1130
790
RPM
HP
Density 0.075 lb/ft
3
Dimensions shown in inches (millimeters) and weight is shown in pounds (kilograms).
*Motor cover is optional. Size may be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.