FAN & BLOWER MOTORS
TWO-WINDING VARIABLE TORQUE
PSC TYPE FOR SHAFT MOUNTED
FAN APPLICATIONS
AC MOTORS
MULTI-SPEED SINGLE & THREE PHASE
SINGLE PHASE PSC TYPE RESILIENT BASE
TOTALLY ENCLOSED AIR OVER (TEAO)
These fan and blower duty
motors are designed for
dependable, energy saving
performance in applications
where the fan is mounted on
the shaft of the motor. The
permanent split capacitor
design does not require a
centrifugal switch, resulting in
higher reliability than on other
types of single phase motors.
This design is also more energy efficient and less
expensive to operate.
These motors may be operated at listed speed or two
speed operation may be achieved by using the proper
auxiliary switch. They are suitable for variable speed
by adjusting the voltage to the motor using a variable
voltage control.
Overload protected with a UL and CSA recognized
automatic reset protector. Grounding provisions.
Totally enclosed, dust tight design, with resilient
mounting for quiet operation. Lubricated with Exxon
POLYREX EM high temperature lubricant. Exterior
coating on 56-frame motors
is two-stage epoxy and on
48-frame motors a baked-on
powder coat is applied for
extra corrosion resistance in
tough applications. Because
of the inherently low starting
torques of this design, these
motors are not suitable for
belt driven fan applications.
They must be mounted within
the air stream of the driven
fan.
TWO-SPEED, TWO-WINDING
VARIABLE TORQUE
FOR BELT DRIVEN
OR SHAFT MOUNTED
FAN APPLICATIONS
HP
SYN
RPM NEMA
Catalog
60 Hz Frame
Number
App.
Wgt.
(lbs.)
Voltage
Over-
load
Prot.
F.L.
Amps
230V
C
Dim.
(Inches)
1/4 1800 48Z*
100803.00
19
115/230
Auto.
1.4
10.66
100824.00
10080500
20
22
115/230
115/230
Auto.
Auto.
1.4
1.4
10.66
11.06
1200 48Z*
1200 S56Z*
1/3 1800 48Z*
1800 S56H
1800 56HY
100804.00
100767.00
111348.00
21
22
29
115/230
115/230
115/230
Auto.
Auto.
Auto.
1.6
1.6
1.7
10.66
10.31
12.94
1200 48Z*
1200 S56HZ*
100825.00
100806.00
25
27
115/230
115/230
Auto.
Auto.
1.8
1.8
11.16
11.56
1/2 1800 56HZ*
1800 S56H
111323.00
100768.00
30
36
115/230
115/230
Auto.
Auto.
2.6
2.2
12.56
10.81
1200 48Z*
1200 56HZ*
101645.00
111321.008
27
37
115/230
115/230
Auto.
Auto.
2.8
3.0
11.16
13.56
900 56HZ*
111919.008
45
115/230
Auto.
3.2
13.56
3/4 1800 56HZ*
1800 56H
111324.00
111266.00
34
36
115/230
115/230
Auto.
Auto.
3.5
3.5
13.06
12.31
1200 56HZ*
111322.008
44
115/230
Auto.
4.0
13.56
1800 56HZ*
111267.00
39
115/230
Auto.
4.4
12.81
Over-
load
Prot.
F.L.
Amps
230V
C
Dim.
(Inches)
10.65
These motors have a 1.0 Service Factor.
SINGLE PHASE PSC TYPE RIGID BASE
TOTALLY ENCLOSED AIR OVER (TEAO)
HP
SYN
RPM NEMA
Catalog
60 Hz Frame
Number
App.
Wgt.
(lbs.)
Voltage
1/4 1800 48Y
100699.00
19
115/230
Auto.
1.4
101252.00
19
115/208-230
Auto.
1.5
10.40
1/3 1800 48Y
1800 56Y
100700.00
111202.00 A
21
27
115/230
115/230
Auto.
Auto.
1.6
1.7
10.65
12.00
1800 48Y
101253.00 A
22
115/208-230
Auto.
1.9
10.65
1200 S56Z
1800 48Y
100604.00
23
115/230
Auto.
1.8
11.40
1/2 1800 48Y
100701.00
25
115/230
Auto.
2.5
12.15
101176.003
24
115/230
Auto.
3.5
10.40
1800 S56Y
SINGLE PHASE DRIP-PROOF RESILIENT BASE
HP
SYN
RPM
NEMA
Catalog
60 Hz
Frame
Number
App.
Wgt.
(lbs.)
Voltage
Over-
load
Prot.
Variable torque, two-speed
motors are suited for belted or
fan on shaft applications. They
are self ventilated, and may be
mounted within or outside of the
driven fans air stream.
Resilient mounted for quiet operation, and lubricated with
high temperature Exxon POLYREX EM lubricant.
3/4 HP and larger single phase are capacitor start motors;
smaller single phase are split phase start.
THREE PHASE DRIP-PROOF RESILIENT BASE
F.L.
C
Amps
Dim.
High/Low (Inches)
1/4-1/12 1800/1200 48Z*
101020.00
20
115
1/3-0.15 1800/1200 S56H
101021.00
26
115
None 5.0-4.6 12.27
1/2-1/4
1800/1200 56H
1800/1200 56H
111953.00
113643.00
33
33
115
230
None 7.8-4.6 12.31
None 3.9-2.3 12.31
3/4-1/3
1800/1200 56H
1800/1200 56H
111954.008
113672.008
38
39
115
230
None 11.6-7.4 12.81
None 5.8-3.7 12.81
1-0.44
1800/1200 56H
1800/1200 56H
111955.008I
113373.008I
41
39
115
230
None 13.2-9.5 12.81
None 6.5-4.6 12.81
Suitable for single speed operation only.
Has provisions for Bellyband and pedestal fan mounting no rigid base.
In addition to resilient base, this motor has provisions for Bellyband and
pedestal mounting.
HP
8 Combination 56H base motors have mounting holes for NEMA 56 and NEMA
143-5T and a standard NEMA 56 shaft.
1/2-.22
These 825 and 1075 RPM motors suitable for single speed operation only.
shaft of this motor is 3/4 longer to accommodate fan on shaft mountings.
* The
48Z is 1/2 diameter by 21/4. 56Z is 5/8 diameter, 25/8 long. All have 1
3/4-1/3
extended through bolts, except Catalog Numbers 100805 and 100806 which
are extended 1/4.
I Capacitor start/capacitor run design for reduced amperage, others are
capacitor start/induction run.
1-0.44
3 This split phase start, capacitor run motor is suitable for belt drive within the
airflow of the fan.
A Subject to Availability.
112 -.67
SYN
RPM
NEMA
Catalog
60 Hz
Frame
Number
App.
Wgt.
(lbs.)
Voltage
None 4.2-3.2 11.64
Over-
load
Prot.
F.L.
C
Amps
Dim.
High/Low (Inches)
1800/1200 56H
1800/1200 56H
111956.00 A
111957.00
32
32
208-230
460
None
None
1.8-1.1 12.31
0.9-0.5 12.31
1800/1200 56H
1800/1200 56H
111958.008 A
111959.008
36
36
208-230
460
None
None
2.8-1.6 12.81
1.4-0.8 12.81
1800/1200 56H
1800/1200 56H
111960.008
111961.008
40
40
208-230
460
None
None
4.0-2.4 12.81
1.8-1.0 12.81
1800/1200 56H
1800/1200 56H
111962.008
111963.008
40
40
208-230
460
None
None
5.0-2.6 12.81
2.5-1.3 12.81
These motors have a 1.0 Service Factor.
Specifications are subject to change without notice
109
TWO-SPEED MOTORS
THREE PHASE VARIABLE AND CONSTANT TORQUE
AC MOTORS
TWO-SPEED VARIABLE AND CONSTANT TORQUE
Two-speed, single winding design motors. Typical applications and characteristic speed torque
curves are noted below.
These totally enclosed fan cooled designs are priced competitive to other manufacturers dripproof two-speed, single winding motors.
VARIABLE TORQUE 208-230 V
VARIABLE TORQUE 460 V
1725/850 RPM ONE WINDING RIGID BASE TEFC
1725/850 RPM ONE WINDING RIGID BASE TEFC
HP
SYN
RPM
NEMA
Catalog
60 Hz
Frame
Number
App.
Wgt.
(lbs.)
Voltage
F.L.
Amps
C
Dim.
(Inches)
HP
SYN
RPM
NEMA
Catalog
60 Hz
Frame
Number
App.
Wgt.
(lbs.)
Voltage
F.L.
Amps
C
Dim.
(Inches)
1/.25 1800/900 143T
120945.00 A
36
460
1.60.7
12.75
1/.25 1800/900 143T
120944.00 A
36
208-230
3.21.4
12.75
1.5/.37 1800/900 145T
120941.00
36
460
2.41.0
12.75
1.5/.37 1800/900 145T
120947.00A
36
208-230
4.82.0
12.75
2/.5 1800/900 145T
120940.00 A
36
460
3.21.3
12.75
2/.5
1800/900 145T
120946.00
35
208-230
6.32.6
12.75
3/.75 1800/900 184T
131474.00 A
77
460
4.01.8
14.46
3/.75 1800/900 184T
131468.00
78
208-230
8.03.6
14.46
5/1.2 1800/900 184T
131475.00
107
460
6.52.5
15.96
5/1.2 1800/900 184T
131469.00
94
208-230 13.05.0
15.96
7.5/1.9 1800/900 215T
140447.00
155
460
9.73.3
17.71
7.5/1.9 1800/900 215T
140443.00
154
208-230 19.46.6
17.71
10/2.5 1800/900 215T
140448.00
168
460
12.74.2
18.71
10/2.5 1800/900 215T
140444.00
166
208-230 25.48.4
18.71
These TEFC motors have a 1.0 Service Factor.
These TEFC motors have a 1.0 Service Factor.
CONSTANT TORQUE 208-230 V
CONSTANT TORQUE 460 V
1725/850 RPM ONE WINDING RIGID BASE TEFC
1725/850 RPM ONE WINDING RIGID BASE TEFC
HP
SYN
RPM
NEMA
Catalog
60 Hz
Frame
Number
App.
Wgt.
(lbs.)
Voltage
F.L.
Amps
C
Dim.
(Inches)
HP
SYN
RPM
NEMA
Catalog
60 Hz
Frame
Number
App.
Wgt.
(lbs.)
Voltage
F.L.
Amps
C
Dim.
(Inches)
1/.5 1800/900 143T
120943.00A
36
460
1.41.6 13.25
1/.5
1800/900 143T
120942.00 A
37
208-230
3.24.2
12.75
2/1 1800/900 184T
131471.00
68
460
2.92.9 13.96
2/1
1800/900 184T
131473.00 A
69
208-230
5.85.7
13.96
3/1.5 1800/900 184T
131470.00
80
460
3.83.5 14.96
3/1.5 1800/900 184T
131472.00
80
208-230
7.66.9
14.96
5/2.5 1800/900 215T
140445.00 A
145
460
6.77.0 17.71
5/2.5 1800/900 215T
140446.00 A
208-230 13.414.0
17.71
These TEFC motors have a 1.0 Service Factor.
137
These TEFC motors have a 1.0 Service Factor.
F.L. Amps listed are for high and low speeds, respectively.
Class F insulated.
A Subject to Availability.
All 180 and 210 frame Rolled Steel motors have Class F Insulation.
MULTI-SPEED MOTORS APPLICATION DATA
Variable torque motors have horsepower ratings
that vary as the the square of the speed, while
torque varies directly with the speed. These
motors are typically used on applications such
as fans, blowers and centrifugal pumps.
TORQUE
Constant torque motors are capable of
developing the same torque for all speeds. Their
horsepower ratings vary directly with the speed.
Constant torque motors are used on mixers,
compressors, conveyors, printing presses,
extractors, feeders and laundry machinery.
Constant horsepower motors develop the same
horsepower at all operating speeds, and the
torque varies inversely with the speed. These
motors are often used on machine tools, such as
drills, lathes, punch presses and milling machines.
Please contact LEESON with details for
constant HP applications.
HORSEPOWER
Specifications are subject to change without notice
115
