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SB-54 Belt Drive
Model Number
Motor
HP
Fan
RPM
Max
BHP *Sones
CFM / Static Pressure in Inches WG
0.00
0.10
0.125
0.15
0.20
0.25
0.30
0.375
0.50
0.625
0.75
1.00
Level 1 Performance
Max RPM L - 343 H - 377
Max Motor Frame Size - 145T
TS = RPM x 13.135
SB-1L54-7
3/4
224
0.51
10.7 19676 12031
257
0.77
12.0 22575 17498 14789
272
0.92
12.7 23892 19346 17418 14251
SB-1H54-7
3/4
244
0.49
10.6
18660
13392
281
0.75
12.2
21490
17541 16040
299
0.91
13.4
22867
19233 18136 16425
SB-1L54-10
1
283
1.03
13.3 24859 20604 19008 16462
300
1.21
14.1 26352 22515 21155 19430
SB-1H54-10
1
310
1.01
14.0
23708 20252
19215 17828
329
1.21
15.6
25161 21986
21010 20033
SB-1L54-15
1
1
⁄
2
325
1.56
16.5 28548 25088 24008 22726 18692
343
1.83
17.3 30129 26851 26014 24825 21850 16537
SB-1H54-15
1
1
⁄
2
355
1.52
17.4
27149 24310 23414
22509 20237
377
1.82
19.0
28832 26243 25408 24557
22802 19924
Level 2 Performance
Max RPM L - 508 H - 562
Max Motor Frame Size - 184T
TS = RPM x 13.135
SB-2L54-15
1
1
⁄
2
325
1.56
16.5 28548 25088 24008 22726 18692
343
1.81
17.3 30129 26851 26014 24825 21850
SB-2H54-15
1
1
⁄
2
355
1.52
17.4
27149 24310 23414
22509 20237
377
1.82
19.0
28832 26243 25408 24557
22802 19924
SB-2L54-20
2
356
2.00
18.0 31271 28113 27322 26297 23790
380
2.46
19.6 33379 30420 29680 28940 26821 23826
SB-2H54-20
2
390
2.01
20
29826 27374 26567 25750
24103 21767
414
2.41
22
31662 29444 28684 27924
26374 24628 21971
SB-2L54-30
3
408
3.07
22
35839 33083 32394 31704 30019 27876 24657
433
3.61
26
38035 35439 34789 34139 32810 30926 28749
SB-2H54-30
3
446
3.01
26
34109 32145 31468 30762 29338
27897 26104
474
3.61
30
36250 34402 33873 33209 31882
30526 29170 26145
SB-2L54-50
5
478
4.87
35
41988 39636 39048 38459 37283 36006 34299 31347
508
5.97
44
44623 42410 41857 41303 40196 39088 37699 35194 28363
SB-2H54-50
5
528
4.99
35
40380 38721 38307 37854 36662 35469 34252
32427 27435
562
6.03
40
42980 41422 41032 40643 39618 38498 37370
35655 32079
Level 3 Performance
Max RPM L - 619 H - 779
Max Motor Frame Size - 254T
TS = RPM x 13.135
SB-3L54-30
3
339
1.97
20
29862 26277 25025 23452 19663
390
3.01
25
34354 31312 30531 29462 26898 24533 21251
415
3.61
27
36557 33708 32974 32162 30005 27535 24061
SB-3H54-30
3
430
2.03
27
27612 25569
25157 24640 23580 22036 20032
491
3.00
33
31529 29634 29274 28913
28053 27125 25868 23501
526
3.62
38
33776 31946 31609 31272
30565 29698 28831 26933
SB-3L54-50
5
463
5.01
40
40785 38252 37593 36935 35395 33426 31153 26792
492
6.02
44
43339 40968 40348 39728 38489 36778 34740 31783 26116
SB-3H54-50
5
584
5.01
48
37501 35765 35447 35144 34537
33881 33101 31897 28836
618
6.02
52
39684 38044 37683 37396 36823
36250 35558 34451 32025 28547
SB-3L54-75
7
1
⁄
2
530
7.51
46
46687 44501 43926 43351 42200 40903 39302 36323 30423
563
9.03
49
49594 47550 47008 46467 45384 44301 42910 40440 36084 30683
SB-3H54-75
7
1
⁄
2
666
7.38
57
42766 41244 40864 40558 40026 39494
38962 37956 36129 33526
710
9.02
63
45591 44164 43807 43450 42943 42444 41945
41121 39515 37449 34796
SB-3L54-100
10
584
10.04
51
51443 49482 48960 48438 47394 46350 45173 42994 38597 33058
619
12.00
56
54526 52685 52198 51706 50721 49736 48751 46840 42826 39077 33870
SB-3H54-100
10
738
10.01
68
47389 46016 45673 45329 44791 44311 43831
43111 41571 39835 37550
779
12.00
75
50022 48721 48396 48070 47487 47032 46578 45895
44548 43085 41129 35732
CFM values shown
in black are the most
efficient selections.
Values shown in gray
are not recommended.
Performance certified is for Model SB for installation type A: free inlet, free 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 5 ft (1 .5 m) in a hemispherical free field calculated per AMCA Standard 301 .
Values are for installation type A: free inlet hemispherical sone levels .
*Sones shown apply to the highest cataloged CFM in black type at each fan RPM. For selections at other CFM and
static pressure points,refer to CAPS, the Computer Aided Product Selection Program.
