DC 12V 24V Electric Motor DIY Design Reciprocating Cycle Linear Actuator Eletric Actuador Lineal Motor Foe Sex Machine

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This Linkage Mechanism is an automatic constantly reciprocating linear actuator motor, which frequency is Variable. 

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This machine output in an axle, the run speed on axis is Non-uniform.

If require speed uniform please don't bid.

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This machine is Non-standard manual production, the surface is rough.

If require surface precise please don't bid.

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The speed faster, the noise louder. If require quietly, please be careful before bid.

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Linear motion part is consist of sliding linear ball bearing and steel axle.

Axle need adds lubricating oil at regular intervals, in order to limited axle temperature less than 90 degrees, and oil wetness. 

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Due to rotating lump is affected by gravity, the machine go and back speed is different.

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If you want to control speed, you can add a PWM DC motor speed controller for this.