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Actuator 500lbs. Load
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The Motion 85151/85152 Ball Drive Actuator has been designed and carefully developed for versatility in a wide range of applications.

By selecting the exact stroke, motor type, stroke speed and mounting configuration, a unit can be specified for virtually any performance and envelope requirement. Most generally the 85151/85152 series is recommended for loads of 500 lbs.; however this can be extended in certain applications. The basic construction incorporates the Motion Ball Drive 85010 which is a high efficiency .653 diameter Epicyclic Ball Screw with integral freewheeling at stroke ends to eliminate limit switches. The 85151 uses a translating tube for mounting, while the 85152 is an open screw type unit where attachment is made directly to the ball nut.

Ball Drive:

The 85151/85152 Actuator transmits thrust with the Motion 85010 Ball Drive which is an Epicyclic Ball Screw. This device has a unique freewheeling feature to prevent over travel at the end of stroke. A ball cage within the nut ID cams up against stop pins at each end of travel to initiate freewheeling and linear advancement stops. The stop pins are mounted in the screw thread and are factory installed for the specified stroke. This design generally eliminates the need for externally mounted limit switches. The 85010 has a screw diameter of .653 with an advancement per revolution of .187. All elements: screw, nut and ball cage are heat

treated alloy steal with bearing surfaces for long wear characteristics. The nut is provided with a 15/16 thread for attachment of the translating tube on the 85151 or for direct mounting on the 85152. Efficiency of the 85010 Ball Drive is 90%.

Ball Screw

Gear Reducer:

Motor speed reduction to drive the 85010 Ball Drive is by a single stage worm gear reducer. The housing is die cast aluminum alloy. A molded neoprene coupling with steel inserts couples the motor shaft to the worm shaft and provides protection against shock loads. The worm shaft runs in an oilite bearing at the motor end and a ball bearing at the opposite end. The Ball Drive is mounted in a ball bearing at the output side of the gear reducer which takes axial thrust loads, and an oilite bearing at the opposite end. Both the worm and gear are heat treated steel for long wear life. The ratios are: 10:1, 20:1 and 40:1. The gear reducer is sealed and permanently lubricated with a high grade synthetic grease. Special lubricants are available for extreme applications such as low temperature.

actuator gearbox

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.

Stroke:

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


actuator print

Design Options 85151/85152


Gearbox Mounting:

Normally the Type A gearbox mount with a .375 diameter crosshole 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 crossholes can be provided such as .250 or .312. 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.

gearbox post

Brakes:

A bi-directional friction brake which provides load holding and antidrift is normally specified with the 20:1 and 10:1 gear ratios. The 20:1 takes a standard friction brake, while the 10:1 uses a heavy duty version. Many linkage type applications have balanced loads where a brake is not necessary. While the 40:1 ratio is self –locking, either the standard or heavy duty brake can be added to give quick stopping for positioning type applications.

Design Options 85151 only


Cover Tubes:

An aluminum cover tube with a quad ring seal at its outboard end is available for applications which require protection of the screw.

Rod End:

A self-aligning rod end is available for the outboard end of the translating tube. It provides fine adjustment (± .125) of the centerline mounting dimension of the actuator to compensate for tolerance buildup in customer assemblies. Minimum retracted and extended centerline mounting dimensions are increased by 1.875 with this option.

actuator mounts


Support Bushing:

For applications with compressive loads, particularly where the stroke is 6.000 or longer, it is recommended that a support bushing be included. This bushing is mounted on the end of the screw and rides within the translating tube to assist alignment throughout the stroke. For strokes of 12.000 or longer, a support bushing is generally recommended whether loads are tension or compression. The actuator minimum retracted and extended centerline mounting dimensions are increased by 1.250 with this feature.

Weatherproof Motor Enclosure:

Where normal operating conditions are severe, a weatherproof motor enclosure is available for the AC motors. This housing has an outside diameter of 4.000 and increases the B dimension to 6.500 for all AC units. DC motors are adequately sealed so that additional enclosure is not required.

Design Options 85152 only

Nut Mounting:

The ball nut has a 15/16-16 thread which can be interfaced directly with customer equipment. For trunnion mounting, particularly in linkage type applications, an adapter can be added to the nut (alternate nut) which provides two .254 diameter holes radially located at 180˚ for attachment. The ball nut can also be reversed to permit an extremely compact mounting dimension, and this arrangement is generally recommended in compressive load applications.

Nut type

 

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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:

Gear Ratio
115, 220 VAC 1500 RPM
115, 220 VAC 3200 RPM


10:1 20:1 40:1
.55/.45 .27/.25 .14/.14
1.10/.90 .55/.50 .28/.28

  DC Motors:

Gear Ratio
12, 24 VDC (PM) 3000 RPM
12, 24 VDC (PM) 6000 RPM
115 VDC (PM) 6000 RPM
Note: Stroke speeds are in./sec with no load speed shown first and 500 lb. load speed shown second.


10:1 20:1 40:1
.90/.70 .45/.35 .22/.20
1.80/1.35 .90/.65 .45/.35
1.80/1.35 .90/.65 .45/.35

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, 2 amps no load, 10 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, 6 amps no load, 15 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, 1 amp no load, 5 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, 3 amps no load, 8 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, 2.1 amps at 500 lbs. with 20:1 ratio.

Ball Drive

Epicyclic Ball Screw 85010 with integral freewheeling at ends of stroke.

Screw OD: .653

Screw root dia.: .562

Advancement/rev.: .187

Centerline pin dimension: 1.562 + stroke

Nut OD: 1.000
Nut mounting: 15/16-16 thread.

Materials: heat-treated alloy steel with bearing races.

Efficiency: 90%

Gear
Reducer

Single stage worn gear type with 6302 ball bearing to accommodate ball screw thrust.

Housing: die cast aluminum alloy.

Bearings: worm shaft and Ball Drive 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. Special lubricants are available for extreme applications such as low temperature.


Weight

85151: 6.9 lbs. (6 in. stroke with AC motor) 6.2 lbs. (6 in. stroke with DC motor – 3.0 dia. PM) 85152: 6.5 lbs. (6 in. stroke with AC motor) 5.8 lbs. (6 in. stroke with DC motor – 3.0 dia. PM)

actuator wiring DWG

3D Model


3D Modeling is available to customize the actuator to fit your needs. Any stroke may be specified with no limitation on interim dimensions.

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To view and download a list of DWG or DXF drawings go to CAD DRAWINGS.

Motion Systems Corporation
600 Industrial Way West
Eatontown, New Jersey 07724 USA
Tel: (732) 222-1800, Fax: (732) 389-9191
Email to appengineer@motionsystems.com
(Please include your company name, address, and phone number in the email)