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LB/LBP 48
Belt Drive
LB Dimensions
70
3
⁄
8
(1788)
1
⁄
3
58
4
(44)
(1473)
LBP Dimensions
64
(1626)
58
1
3
⁄
4
(44)
(1473)
Model
Motor
Number
HP
LB/LBP-48-5
1/2
LB/LBP-48-7
3/4
LB/LBP-48-10
1
LB/LBP-48-15
1
1
⁄
2
LB/LBP-48-20
2
LB/LBP-48-30
3
LB/LBP-48-50
5
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.
87
41
(2210)
(1041)
11
5
⁄
58
(295)
(1473)
76
⁄
1
2
32
(1943)
(813)
58
(1473)
Fan
RPM
0
0.125
CFM
9666
6546
150
BHP
0.21
0.24
Sones
6.1
5.4
CFM
11277
8948
175
BHP
0.34
0.38
Sones
6.9
5.6
CFM
12824
10846
199
BHP
0.5
0.56
Sones
7.6
6.8
CFM
14563
12863
226
BHP
0.73
0.81
Sones
8.5
8.2
CFM
16046
14530
249
BHP
0.98
1.07
Sones
9.5
9.4
CFM
17205
15823
267
BHP
1.2
1.31
Sones
10.6
10.4
CFM
18365
17103
285
BHP
1.46
1.58
Sones
12.3
11.7
CFM
20234
19141
314
BHP
1.96
2.1
Sones
15.4
14.5
CFM
23134
22214
359
BHP
2.93
3.1
Sones
18.4
17.8
CFM
24552
23685
381
BHP
3.5
3.68
Sones
20
19.6
CFM
27065
26278
420
BHP
4.69
4.89
Sones
23
23
1.4
300
1.2
250
1.0
41
1
⁄
2
200
0.8
(1054)
150
0.6
8
100
0.4
50
0.2
0
0.0
0
0
40
3
⁄
Hood Thickness
8
(1026)
Cover Thickness
Louver Thickness
Curb Cap Thickness
Damper Size Square
Roof Opening Square
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/241)
MAXIMUM FRPM = 420
TIP SPEED = rpm x 12.632
MAX. MOTOR FRAME SIZE = 213T
7629
0.54
7.0
10741
0.83
7.5
12787
10092
1.1
1.08
9.2
8.3
14222
12151
1.35
1.36
10.2
9.2
15612
13896
11357
1.63
1.66
1.61
11.1
10.5
9.6
17779
16397
14665
11934
2.17
2.2
2.22
13.4
12.5
12.2
21041
19878
18650
17134
3.21
3.25
3.29
17.2
16.5
15.9
22620
21512
20378
19104
3.81
3.87
3.92
19.1
18.6
17.9
25383
24354
23363
22317
5.05
5.15
5.21
23
23
22
Density 0.075 lb/ft
4
8
12
16
20
cfm X 1000
10
20
30
3
m
/hr X 1000
LB-48
0.064
(0.029)
-
0.064
-
0.081
0.064
0.064
(0.029)
48
(1219)
50
1
⁄
(1283)
2
Galvanized,
Aluminum,
430
(195)
0.625
0.75
0.875
0.9
2.1
11.5
15069
11596
3.31
3.25
2.84
15.5
14.8
13.4
17564
15491
15076
3.95
3.95
3.86
3.85
17.4
17.1
16.2
16.0
21159
19839
19534
5.25
5.29
5.31
5.3
22
21
21
21
RPM
HP
3
24
28
40
LBP-48
-
(0.029)
(0.036)
(0.029)
48
(1219)
50
1
⁄
(1283)
2
579
(263)
1
3
18029
5.23
20
21
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