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Actuator 40lbs.
The Motion 85915/85916 Ball Drive Actuator provides a miniature package for operating loads up to 40 lbs. The basic construction incorporates the Motion Ball Drive 85906 which is a high efficiency .222 diameter Epicyclic Ball Screw with integral freewheeling at stroke ends to eliminate limit switches. Both 12 VDC and 24 VDC are available. The 85915 uses a translating tube for mounting, while the 85916 is an open screw type unit where attachment is made directly to the ball nut. Actuator Gearbox Actuator Mounts
actuator Ballscrew

actuator Print

Technical Data Ball Drive Actuator 85915/85916

Load Capacity

40lbs. (dynamic)
240 lbs. (static)
Note: 40 lb. load rating can be extended in certain
applications.

Stroke

Any stroke length may be specified up to 12.000"
Available in inches or millimeters, with no limitation on interim dimensions.

Stroke
Speed

DC Motors:
Gear Ratio
12,24 VDC (PM) 8000RPM
Note: Stroke speeds are in./sec/ with no load speed shown first and 40 lb. load speed shown second.

9.5:1        19:1
.93/.83     .54/.47

Gear Ratios

9.5:1, 19:1.  

Motors

DM Motors:
1) 12 VDC Permanent Magnet Brush, 1.2 diameter, 8000 RPM (no load), intermittent duty cycle (60%), 2 wire, enclosed construction, 1.1 amps no load, 1.4 amps at 40 lbs. with 19:1 ratio.

2) 24 VDC Permanent Magnet Brush, 1.2 diameter, 8000 RPM (no load), intermittent duty cycle (60%), 2 wire, enclosed construction, .3 amps no load, .5 amps at 40 lbs. with 19:1 ratio.

Ball Drive

Epicyclic Ball Screw 85906 with integral freewheeling at ends of stroke.

Screw OD: .222

Screw root dia.: .186

Advancement/rev.: .068

Centerline pin dimension: .625 + stroke

Nut OD: .437
Nut mounting: 3/8 – 24 thread

Materials: heat treated alloy steel with bearing races.

Efficiency 90%

Gear
Reducer

Single stage worm gear type with R-3 ball bearing to accommodate ball screw thrust.

Housing: die cast aluminum alloy.

Bearings: Ball Drive shaft supported on sleeve bearing and ball bearing.
Worm and gear materials: heat treated steel.

Lubrication: permanently lubricated with synthetic grease.

Special lubricants are available for extreme applications such as low temperature.

Mounting
Dimensions

85915: minimum retracted centerline mounting dimension is 2.687 plus stroke. For example: a 3.500 stroke unit will measure 6.187 (2.687 + 3.500) in the retracted position and 9.687 (6.187 + 3.500) in the extended position. A retracted dimension can be specified greater than the minimum. For example: a 3.500 stroke unit could be 12.000 in the retracted position and 15.500 (12.000 + 3.500) in the extended position. Design options ad to the minimum retracted dimension:

Support bushing: .437

Rod end: 1.188
85916: minimum retracted centerline gearbox mounting hole to nut shoulder is 2.250. For example: a 3.500 stroke unit will measure 2.250 in the retracted position and 5.750 (2.250 + 3.500) in the extended position. A retracted dimension can be specified greater than the minimum.

When the adapter for trunnion mounting is added to the nut, the minimum retracted centerline gearbox mounting hole to the centerline of the .131 holes is 2.390 (2.250 + .140).

When the alternate nut is reversed, this dimenstion will be 1.1764

Weight

85915: .74 lbs. (4 in. stroke) 85916: .56 lbs.(4 in. stroke)

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)