DIY Reciprocating Linear Actuator Stroke 2cm-8cm Adjustable Telescopic Motor with Speed Controller 24V 120RPM Adjustable Stroke and Speed, 5-25kg Thrust

I use this to teach engineering students reciprocating mechanisms. Adapted to test ball point pen retracting life cycle.

Unit runs well and has a good amount of thrusting power as well as a wide range of adjustable speed.If it came with a stand you could mount it to in order to give the unit more flexibility it would be outstanding.Wife loves it, water works everytime.

Arrived defective with the AC/DC power unit not even lighting up when plugged in/turned on. Wired it up properly as shown for positive/negative. Tested outlet used worked with other devices and had power.Pending return/replacement to see if the second one yields better results than the first.Edit: Second one arrived functional. It works to accomplish the task I need it to accomplish. The noise of the gears is abit loud, but it gets less noisy if you hit it inside with some WD40Isn't as strong as I thought it might be in terms of its lifting power, but it works for what I need it to do

Really loud and not what I expected. It sounds like the gears are broken

Works well has a great range of speed only thing I don't like is how loud it gets especially when you get up to the higher revolution it's just super loud

Has a lot more power then intimidated not very loud