Car Door Lock Actuators

These actuators are usually used to actuate central locking mechanisms in cars.

They use a motor with a rack and pinion to get the linear motion.  Powering with one polarity extends the rack and reversing it retracts it.

Current draw is in the vicinity of 5Amps @ 12V DC.  They are only meant to be powered for very short periods, otherwise they will overheat and burn out.


door_lock_motorThis “gun” types are the most common style.

They are available as master (5 wire) or slave (2 wire) versions.

They are available from about $3 on eBay.








hd_door_lock_motorThis one is touted as a “heavy duty” type.

It was $7.50 on eBay.