Linear Actuator 85915 / 85916
The Motion 85915/85916 Linear Actuator provides a miniature package for operating loads up to 40 lbs.
The basic construction incorporates the Motion Ball Screw 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.
Technical Data Linear Actuator 85915/85916 |
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LOAD CAPACITY |
40lbs. (dynamic) 240 lbs. (static) Note: 40 lb. load rating can be extended in certain applications. |
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STROKE |
Any stroke length may be specified up to 12.000" Available in inches or millimeters, with no limitation on interim dimensions. |
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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 |
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GEAR |
9.5:1, 19:1 | |
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MOTORS |
DC 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. |
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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% |
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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. |
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WEIGHT |
85915: .74 lbs. (4 in. stroke) | 85916: .56 lbs.(4 in. stroke) |