Specifications are subject to change without notice
Gearmotors
108
SUB-FHP DC GEARMOTORS
OFF-SET SHAFT GEARMOTORS
OS300 SERIES
"-ÎääÊ- , -Ê ÊUÊ- ,Ê, /
" - /Ê- /ÊUÊ/ 6ÊUÊ£°äÊ- ,6 Ê
/",
F.L.
Gearmotor
Arm
F.L. Overhung
DIMENSIONS
Output Torque Input
Catalog
Type &
Ratio Volts Amps Load
P
X
XH
XL
RPM (Lb.In.) HP
Number
Frame
DC
DC
Lbs.
Inches
9
268
1
⁄
20
M1125251
OS303-30 210
90 .54
474
3.00 2.81 4.50 8.52
19
150
1
⁄
20
M1125250
OS303-30 103
90 .56
385
3.00 2.81 4.50 8.52
24
280
1
⁄
8
M1125249
OS303-30
76
90 1.3
353
3.00 2.81 6.42 10.45
31
220
1
⁄
8
M1125248
OS303-30
58
90 1.4
327
3.00 2.81 6.42 10.45
51
130
1
⁄
8
M1125247
OS303-30
35
90 1.4
277
3.00 2.81 6.42 10.45
.11 REF
.675
3.375 TYP
3.375 TYP
1.688
.517
Ø
.625
.624
.187 SQ
x 1.00 LONG
KEY
1.31
1.50
1.00
FULL
DEPTH
1.25
TO SHAFT
SHOULDER
(4) 5/16-18 UNC-2B
.62 DP MIN
TOP
LOAD SPRING
AT THIS END
"XH"
(3) LEADS
12.0 LONG MIN
3.13 REF
"XL" REF
CONDUIT BOX
(OPTIONAL)
Ø3.00
LOCKSEAM
(FAR SIDE)
2.81 REF
1.79 REF
NAMEPLATE
1.58
1.65
3.30
3.94 REF
6.11 REF
ALL DIMENSIONS IN INCHES
"-ÎääÊ- , -Ê ÊUÊ "7Ê6" / Ê£Ó6®
" - /Ê- /ÊUÊ/ 6ÊUÊ£°äÊ- ,6 Ê
/",
F.L.
Gearmotor
Arm
F.L. Overhung
DIMENSIONS
Output Torque Input
Catalog
Type &
Ratio Volts Amps Load
P
X
XH
XL
RPM (Lb.In.) HP
Number
Frame
DC
DC
Lbs.
Inches
9
268
1
⁄
20
M1125256
OS303-30 210
12 4.5
474
3.00 2.81 4.50 8.52
18
150
1
⁄
20
M1125255
OS303-30 103
12 5.0
385
3.00 2.81 4.50 8.52
24
280
1
⁄
8
M1125254
OS303-30
76
12 10.6 353
3.00 2.81 6.42 10.45
31
220
1
⁄
8
M1125253
OS303-30
58
12 10.6 327
3.00 2.81 6.42 10.45
51
130
1
⁄
8
M1125252
OS303-30
35
12 10.3 277
3.00 2.81 6.42 10.45
SCR RATED:
130-268 In-Lbs Torque
LOW VOLTAGE:
130-268 In-Lbs Torque
Electrical Specifications:
SCR Rated Gearmotors
Totally enclosed, permanent
magnet DC gearmotors,
performance matched for
continuous duty service over
a 60:1 speed range. All have constant
torque throughout the range when powered by a full-wave
unfiltered SCR-type adjustable speed control having a typical
form factor of 1.3 to 1.4.
Low Voltage Gearmotors
Totally enclosed, permanent magnet DC gearmotors,
performance matched for continuous duty. Motors are designed
for battery power or can be used with a low voltage controller
with form factor up to 1.05.
Mechanical Specifications:
Precision machined steel gears, with a first stage steel helical
gear followed by spur-type gears. Lubrication is permanent
semi-fluid grease, reducing possibility of leakage. Output shafts
have needle bearings for high load capacities. Shafts are
hardened steel.
Conduit box
not
included with motor.
Optional conduit box
shown on page 121.
Application Notes:
These gearmotors are designed for mounting at any angle, but
shaft up with motor below should be avoided to prevent leakage
of lubricant into the motor should the motor’s shaft seal fail.
Overhung load capacities shown are at center of output shaft.
The motor’s stall torque exceeds recommended full load
torques. A current limiting device such as an SCR control
should be used to prevent damage.
