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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 AMCA Certified Ratings Seal applies to air performance only.
Wheel Diameter = 27
1
⁄2 (699)
Shaft Diameter = 1
1
⁄2 (38)
Outlet Area = 4.97 ft
2
(0.462 m
2
)
Mounting Hole Size = 5/8 (16)
^Approximate Unit Weight = 845 lb. (383 kg)
All dimensions in inches (millimeters)
For additional discharge positions see page 12
^Weight shown is largest cataloged Open Drip Proof motor
SFB-27 - Belt Drive
CFM OV
Static Pressure in Inches wg
0.25 0.5 0.75 1 1.25 1.5 2 2.5 3 3.25
8600 1729
RPM 245 297 345 388 427 462
BHP 1.29 1.72 2.17 2.61 3.07 3.56
Sones 11.1 12.5 15.1 16.7 18.2 20
9750 1961
RPM 264 310 355 397 434 470
BHP 1.75 2.21 2.71 3.23 3.73 4.26
Sones 13.1 14.6 17.0 18.4 19.7 21
10900 2192
RPM 284 327 368 407 444 477 540
BHP 2.31 2.84 3.38 3.94 4.51 5.05 6.24
Sones 15.1 16.7 18.9 20 21 23 26
12050 2423
RPM 305 344 381 419 454 487 547 603 652
BHP 3.02 3.58 4.14 4.78 5.39 6.03 7.28 8.58 9.95
Sones 17.3 19.2 21 22 23 25 27 30 34
13200 2655
RPM 327 363 398 432 465 497 556 610 660 683
BHP 3.85 4.46 5.09 5.73 6.41 7.09 8.45 9.86 11.28 12.04
Sones 19.8 22 23 24 25 27 29 32 35 37
14350 2886
RPM 349 382 415 447 478 508 566 618 668 691
BHP 4.83 5.47 6.16 6.83 7.57 8.30 9.80 11.22 12.80 13.58
Sones 22 24 25 26 28 29 31 33 37 39
15500 3117
RPM 372 403 434 464 491 521 576 628 676 699
BHP 5.97 6.64 7.40 8.14 8.84 9.68 11.25 12.88 14.41 15.28
Sones 25 26 27 28 30 32 34 36 39 40
16650 3349
RPM 395 424 453 481 508 535 588 638 685
BHP 7.27 8.02 8.80 9.60 10.38 11.17 12.90 14.64 16.36
Sones 27 28 29 31 33 34 36 39 41
17800 3580
RPM 418 446 472 499 525 550 601 648 695
BHP 8.76 9.59 10.37 11.24 12.10 12.92 14.74 16.49 18.42
Sones 29 31 32 34 35 36 39 41 44
18950 3811
RPM 441 468 492 518 543 567 614 661
BHP 10.40 11.30 12.10 13.10 14.00 14.90 16.70 18.70
Sones 32 34 35 37 38 39 41 44
20100 4043
RPM 465 490 514 538 561 585 629 674
BHP 12.40 13.30 14.20 15.10 16.10 17.10 18.90 21.00
Sones 34 37 39 39 40 41 44 47
D
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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
cfm
44
(1118)
34
1
⁄2
(876)
3
5
⁄8
(92)
35
1
⁄8 (892)
37
5
⁄8 (956)
33
(838)
61
1
⁄8
(1553)
28
1
⁄8
(714)
19
(483)
49
1
⁄8
(1248)
27
(686)
21
3
⁄8
(543)
2
1
⁄2
(64)
28
1
⁄2
(724)
22
1
⁄4 (565)
40
1
⁄2 (1029)
46 (1168)
Maximum BHP at given RPM = (RPM/285)
3
(Maximum KW at a given RPM = (RPM/314)
3
)
Maximum RPM = 700 and Minimum RPM = 200
Tip Speed (ft/min.) = RPM x 7.20
(Tip Speed (m/s) = RPM x 0.0366)
Maximum Motor Frame Size = 286T
SFB-27