DC HOUSE 12 Inch 12 High Speed 14mm/s Linear Actuator Motor 1000N DC12V with Mounting Brackets

Bought 2 previously. One died in less than 3 months due to a stripped gear. Amp draw has been inconsistent between all 3, even spiking amps from binding non-concentric pinions&shafts. Overall they are fine for what i need, but the poor quality combined with slow & noisy operation leave much to be desired. Budget is only reason to buy these.

What a relief to have an automatic chicken coop door. So far works perfect. Smooth operation, i cant imagine it not working for years. I am going to put one on a window in the coop that will be wirelessly and remotely operated from the house so i can operate as the whether changes. The cable on this is the safety so no possibility of a guillotine, at worst the weight of the door itself would be the only pressure and its very thin, light varnished yellow pine.