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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 = 30 (762)
Shaft Diameter = 1
1
⁄2 (38)
Outlet Area = 5.72 ft
2
(0.531 m
2
)
Mounting Hole Size = 5/8 (16)
^Approximate Unit Weight = 940 lb. (426 kg)
All dimensions in inches (millimeters)
For additional discharge positions see page 12
^Weight shown is largest cataloged Open Drip Proof motor
SFB-30 - 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
10000 1749
RPM 245 293 332 369 403 434
BHP 1.60 2.12 2.59 3.13 3.63 4.19
Sones 13.0 15.0 17.3 18.6 20 22
11525 2015
RPM 267 311 350 383 416 446 501
BHP 2.25 2.85 3.44 3.98 4.60 5.19 6.43
Sones 15.7 17.9 19.7 21 22 24 27
13050 2282
RPM 291 330 368 401 430 459 513 562 606
BHP 3.10 3.73 4.44 5.09 5.69 6.39 7.73 9.15 10.56
Sones 18.7 21 22 24 25 27 29 32 35
14575 2549
RPM 316 352 387 419 448 474 526 573 617 638
BHP 4.14 4.85 5.60 6.37 7.10 7.78 9.31 10.79 12.37 13.16
Sones 22 23 25 27 28 30 31 34 38 40
16100 2816
RPM 342 375 406 437 466 492 539 586 629 649
BHP 5.42 6.18 6.96 7.84 8.69 9.49 11.02 12.74 14.38 15.20
Sones 25 26 28 30 32 33 35 37 40 42
17625 3082
RPM 369 399 428 456 484 510 557 600 642
BHP 6.98 7.78 8.64 9.51 10.49 11.40 13.12 14.86 16.73
Sones 28 29 31 33 35 36 38 41 44
19150 3349
RPM 397 423 450 477 503 529 575 616
BHP 8.82 9.65 10.57 11.50 12.50 13.55 15.51 17.32
Sones 31 33 35 36 38 39 42 45
20675 3616
RPM 424 448 474 499 523 547 593 634
BHP 11.00 11.80 12.80 13.80 14.80 15.90 18.10 20.20
Sones 35 37 39 40 41 43 46 49
22200 3883
RPM 452 474 498 521 545 566 612
BHP 13.40 14.30 15.40 16.40 17.50 18.60 21.00
Sones 39 42 42 43 45 46 50
23725 4149
RPM 480 501 523 545 567 588 630
BHP 16.20 17.20 18.30 19.40 20.60 21.70 24.20
Sones 43 45 46 47 49 51 55
25250 4416
RPM 508 528 548 569 589 610 649
BHP 19.40 20.50 21.50 22.80 23.90 25.20 27.70
Sones 46 49 51 52 53 55 59
D
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f
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o
f
t
h
i
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s
y
s
t
e
m
c
u
r
v
e
cfm
53
3
⁄4
(1365)
27
(686)
23
3
⁄8
(594)
2
1
⁄2
(64)
31
3
⁄4
(806)
22
1
⁄2 (572)
42
3
⁄4 (1086)
48
1
⁄4 (1226)
48
3
⁄4
(1238)
36
7
⁄8
(937)
1
1
⁄2
(38)
38
3
⁄8 (975)
41
1
⁄8 (1045)
36
5
⁄8
(930)
68
(1727)
31
3
⁄8
(797)
21
(533)
Maximum BHP at given RPM = (RPM/239)
3
(Maximum KW at a given RPM = (RPM/263)
3
)
Maximum RPM = 650 and Minimum RPM = 175
Tip Speed (ft/min.) = RPM x 7.86
(Tip Speed (m/s) = RPM x 0.0399)
Maximum Motor Frame Size = 286T
SFB-30