Acme Linear Actuator 85237 / 85238

3D Model Purchase

The Motion 85237/85238 Power Drive Actuator is fitted with a .750 diameter Acme drive screw with stop collars at both ends of stroke.

Generally the 85237/85238 series is recommended for loads up to 500 lbs.; however this can be extended in certain applications. The 85237 system uses translating tube for mounting, while the 85238 is an open screw type system where attachment is made directly to the nut.

View Wiring

Motors:

115 VAC, 220 VAC, 12 VDC, 24 VDC and 115 VDC motors are all stock units. The AC motors are permanent split capacitor induction type and are specifically designed for high starting torque with an intermittent duty cycle (25%). Either a 1500 or 3200 RPM speed may be selected and a 1500 RPM continuous duty version is also available. DC motors are permanent magnet brush type. An intermittent duty cycle (60%) is required on DC units. No load speeds are 6000 RPM and 3000 RPM. Motors with other voltages and performance characteristics are available on request.

Gearbox Mounting:

Normally the Type A gearbox mount with a .375 diameter cross hole oriented parallel to the motor shaft is provided; however a 90˚ orientation or any other angle can be specified to facilitate mounting and clearances in customer equipment. Other diameter cross holes can be provided such as .250 or .312 diameter.  Alternately, the Type B or Type C mount can be provided and these permit the use of a larger mounting hole such as .437 or .500.

 

Technical Data Ball Drive Actuator 85151/85152

LOAD CAPACITY

500 lbs. (dynamic)
3000 lbs. (static)
Note: 500 lb. load rating can be extended in certain
applications.

STROKE

Any stroke length may be specified up to 72" ;
Available in inches or millimeters, with no limitation on interim dimensions.

STROKE SPEED

AC Motors:

Drive Screw Advancement/rev
115, 220 VAC 1500 RPM
Note: Stroke speeds are in/sec. with no load

Speed shown first and 500lb. load speed shown second.

 

.333 .166  
.48/.40 .24/.20  
     

GEAR
RATIOS

10:1, 20:1, 40:1  

MOTORS

AC Motors:

1) 115 VAC 60/50 Hz., Permanent Split
Capacitor Induction, 3.3 diameter, 1500
RPM, intermittent duty cycle (25%), 3 wire, enclosed construction, automatic reset thermal overload protector, UL, CSA recognized, 1.6 amps no load, 1.7 amps at 500 lbs. with 20:1 ratio, 18 MFD electrolytic capacitor supplied.

2) 115 VAC 60/50 Hz., Permanent Split Capacitor Induction, 3.3 diameter, 3200
RPM, intermittent duty cycle (25%), 3 wire, enclosed construction, automatic reset thermal overload protector, UL, CSA recognized, 1.2 amps no load, 1.7 amps at 500 lbs. with 20:1 ratio, 18 MFD electrolytic capacitor supplied.

 

3) 220 VAC 60/50 Hz., Permanent Split Capacitor Induction, 3.3 diameter, 1500 RPM, intermittent duty cycle (25%), 3 wire, enclosed construction, automatic reset thermal overload protector, UL, CSA recognized, 1.0 amps no load, 1.1 amps at 500 lbs. with 20:1 ratio, 6 MFD oil filled capacitor supplied.

4) 220 VAC 60/50 Hz., Permanent Split Capacitor Induction, 3.3 diameter, 3200 RPM, intermittent duty cycle (25%), 3 wire, enclosed construction, automatic rest thermal overload protector, UL, CSA recognized, .8 amps no load, 1.1 amps at 500 lbs. with 20:1 ratio, 6 MFD oil filled capacitor supplied.

5) 115 VAC 60/50 Hz., Permanent Split Capacitor Induction, 3.8 diameter, 1500 RPM, continuous duty, 3 wire, enclosed construction, automatic reset thermal overload protector, UL, CSA recognized, .6 amps no load, .8 amps at 500 lbs. with 20:1 ratio, 10 MFD oil filled capacitor supplied.

MOTORS

DC Motors:

1) 12 VDC Permanent Magnet Brush, 3.0 diameter, 3000 RPM (no load), intermittent duty cycle (60%), 2 wire, enclosed construction, 3 amps no load, 20 amps at 500 lbs. with 20:1 ratio.

2) 12 VDC Permanent Magnet Brush, 2.5 diameter, 6000 RPM (no load), intermittent duty cycle (60%), 2 wire, enclosed construction, 7 amps no load, 36 amps at 500 lbs. with 20:1 ratio.

3) 24 VDC Permanent Magnet Brush, 3.0 diameter, 3000 RPM (no load), intermittent duty cycle (60%), 2 wire, enclosed construction, 2 amps no load, 10 amps at 500 lbs. with 20:1 ratio.

 

4) 24 VDC Permanent Magnet Brush, 2.5 diameter, 6000 RPM (no load), intermittent duty cycle (60%), 2 wire, enclosed construction, 4 amps no load, 15 amps at 500 lbs. with 20:1 ratio.

5) 115 VDC Permanent Magnet Brush, 2.5 diameter, 6000 RPM (no load on rectified 115 VAC), intermittent duty cycle (60%), 2 wire, enclosed construction, 1.1 amps no load, 3.5 amps at 500 lbs. with 20:1 ratio.

DRIVE SCREWS

.750-6 Acme with stop collars at ends of stroke.
Screw OD: .750
Screw root dia.: .532
Advancement/rev.:  .166, .333

Nut OD:  1.625
Nut mounting:  1 9/16-18 thread
Materials:  steel screw with brass nut.

GEAR REDUCER

 

Both are single stage worm gear type with 63302 ball bearing to accomodate drive screw thrust.

Housing:  die cast aluminum alloy.

Bearings:  worm shaft and Acme screw
shaft both supported on sleeve bearing and ball bearing.

Worm and gear materials:  heat treated steel.

Motor coupling:  70 durometer neoprene with two heat treated steel inserts.

Lubrication:  permanently lubricated with synthetic grease.

WEIGHT

85237  6.4 lbs. (6 in. stroke less couplings and drive shaft) 85238  5.6 lbs. (6 in. stroke less couplings and drive shaft)