Filter
Top Products
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.
24
BSQ 70 - Belt Drive
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0.125 0.250 0.500 0.625 0.750 1.000 1.250 1.500 1.750 2.000
70
70-4 1/4
1050
CFM 184 129
BHP 0.039 0.037
Sones 8.0 7.5
1313
CFM 251 211 117
BHP 0.077 0.076 0.068
Sones 11.0 10.4 9.2
1445
CFM 284 249 169 122
BHP 0.103 0.102 0.097 0.09
Sones 12.8 12.3 10.7 10.3
1577
CFM 314 284 213 175 131
BHP 0.13 0.13 0.13 0.12 0.12
Sones 14.9 14.6 12.7 11.9 11.4
1709
CFM 345 318 254 220 184 97
BHP 0.17 0.17 0.17 0.16 0.16 0.14
Sones 16.1 15.9 14.5 13.9 13.3 12.4
1840
CFM 375 351 293 262 231 159
BHP 0.21 0.21 0.21 0.21 0.20 0.19
Sones 17.3 17.0 16.4 16.0 15.4 14.5
1972
CFM 405 384 331 302 273 212 142
BHP 0.26 0.26 0.26 0.25 0.25 0.24 0.22
Sones 19.2 19.1 18.6 18.2 17.9 17.7 16.5
70-3 1/3
2072
CFM 428 408 360 332 305 249 184 103
BHP 0.30 0.30 0.30 0.30 0.29 0.29 0.27 0.24
Sones 20 20 19.9 19.5 19.1 18.5 18.2 16.8
2172
CFM 450 431 387 361 335 282 224 161
BHP 0.34 0.35 0.35 0.34 0.34 0.33 0.32 0.30
Sones 21 21 21 21 20 19.7 19.2 18.8
70-5 1/2
2329
CFM 486 467 428 406 381 332 283 225 166
BHP 0.43 0.43 0.43 0.43 0.42 0.42 0.41 0.39 0.36
Sones 23 23 23 23 23 22 21 20 21
2486
CFM 521 504 468 447 426 380 334 287 232 176
BHP 0.52 0.52 0.52 0.52 0.52 0.51 0.50 0.49 0.47 0.44
Sones 25 25 25 25 25 24 23 22 22 23
21
(533)
15
(381)
11
7
⁄8
(302)
15
(381)
1 (25)
*12
1
⁄2
(318)
*14
(356)
*15
1
⁄2
(394)
Damper size = 12 x 12 (305 x 305)
Unit weight** = 76 (34)
Housing thickness = 18 ga
MAX Bhp AT A GIVEN RPM = (rpm/3084)
3
MAXIMUM RPM = 2486
TIP SPEED (ft/min) = rpm x 2.928
MAX NEMA MOTOR FRAME SIZE = 145T
OUTLET VELOCITY (ft/min) = 1.0212 x cfm
0 200 400 600 800 1000
0
200
400
600
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
0 100 200 300 400 500 600
0.0
0.5
1.0
1.5
2.0
2.5
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
RPM
HP
Density 0.075 lb/ft
3
1/2 hp
1/3 hp
1/4 hp
2486
2150
1810
1470
1130
790
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.