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LB/LBP 54
Belt Drive
LB Dimensions
79
1
⁄
2
(2019)
1
⁄
3
64
4
(44)
(1626)
LBP Dimensions
70
(1778)
1
3
⁄
64
4
(44)
(1626)
Model
Motor
Number
HP
LB/LBP-54-10
1
LB/LBP-54-15
1
1
⁄
2
LB/LBP-54-20
2
LB/LBP-54-30
3
LB/LBP-54-50
5
LB/LBP-54-75
7
1
⁄
2
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
22
87
38
(2210)
(965)
12
1
64
(318)
(1626)
83
1
⁄
2
35
(2121)
(889)
64
(1626)
Fan
RPM
0
0.125
CFM
12159
130
BHP
0.25
Sones
4.6
CFM
14497
11186
155
BHP
0.42
0.48
Sones
5.8
4.9
CFM
19267
17356
206
BHP
0.99
1.1
Sones
8.7
8.5
CFM
21980
20319
235
BHP
1.47
1.6
Sones
11.2
11.2
CFM
24131
22628
258
BHP
1.95
2.09
Sones
12.1
12.5
CFM
25908
24517
277
BHP
2.41
2.57
Sones
14.1
13.4
CFM
27685
26383
296
BHP
2.94
3.11
Sones
17.6
15.5
CFM
30210
29017
323
BHP
3.82
4.01
Sones
19.3
17.8
CFM
32736
31634
350
BHP
4.87
5.06
Sones
18.9
19.5
CFM
35167
34142
376
BHP
6.03
6.25
Sones
22
23
CFM
37506
36544
401
BHP
7.32
7.54
Sones
25
26
1.4
300
1.2
250
1.0
45
3
⁄
8
200
0.8
(1153)
150
0.6
⁄
2
100
0.4
50
0.2
0
0.0
0
0
Hood Thickness
43
5
⁄
8
Cover Thickness
(1108)
Louver Thickness
Curb Cap Thickness
Damper Size Square
Roof Opening Square 56
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
0.25
0.375
0.5
MAX. BHP AT A GIVEN RPM - (rpm/198)
MAXIMUM FRPM = 401
TIP SPEED = rpm x 14.137
MAX. MOTOR FRAME SIZE = 213T
13895
1.12
8.7
17983
14194
1.66
1.6
11.3
11.7
20831
17904
2.18
2.21
13.0
13.3
22962
20554
17326
2.68
2.72
2.65
14.1
14.4
13.7
25030
23122
20394
16072
3.25
3.31
3.34
15.2
16.0
15.1
27789
26305
24165
21535
4.17
4.27
4.31
17.3
18.4
18.3
30514
29312
27766
25487
5.25
5.39
5.46
20
21
22
33111
32039
30716
29030
6.45
6.62
6.72
23
24
25
35583
34583
33500
32150
7.77
7.96
8.11
26
27
28
Density 0.075 lb/ft
5
10
15
20
25
cfm X 1000
10
20
30
40
50
3
m
/hr X 1000
LB-54
0.064
(0.029)
-
0.064
-
0.081
0.064
0.064
(0.029)
54
(1372)
1
⁄
(1435)
2
Galvanized,
596
(270)
0.625
0.75
0.875
1
3.1
13.1
17215
4.29
4.01
16.8
14.7
22974
18944
5.5
5.43
5.13
21
19.0
17.8
26889
24483
20824
6.79
6.82
6.71
6.4
26
24
22
21
30332
28324
26018
8.19
8.24
8.29
8.13
29
29
27
26
RPM
HP
3
30
35
40
60
LBP-54
-
(0.029)
(0.036)
(0.029)
54
(1372)
56
1
⁄
(1435)
2
Aluminum,
780
(354)
1.125
3
22767
7.81
24
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