JQDML 12V Heavy Duty Linear Actuator 4 Inch Stroke 660 lbs IP65 Waterproof

This worked great for what I needed it to do which was actuate a parking brake on a car so that it was an electric brake with a small push button. It was also a great price for what you get.

Well built

I previously purchased one of the lower capacity ones and it lasted about 3 months. I bought this one because it was about double the capacity of the last one and it broke within 15 mins. Not sure of the capacity limits but the listed capacity is definitely a pushing capacity and not a pulling capacity. Both failed in the exact same way. Good luck everyone else.

I bought this to build an electronic e-brake for my truck, mainly because of its 660 lb pull rating and IP65 water resistance. The IP65 rating is fairly solid for my application since it will be mounted under the vehicle. The actuator came with instructions and mounting hardware. I bench-tested it using a 12V power supply, and it operated correctly in both directions. The internal limit switches also functioned as expected. I partially disassembled the lead screw housing to inspect the internal limit switch setup. It uses normally closed (NC) microswitches soldered in place with resistors. The switches are mounted in a plastic track that slides into the aluminum housing. During disassembly, I noticed the internally threaded push rod contained aluminum shavings from the threading process. While this doesn’t appear to affect operation, it suggests some inconsistencies in manufacturing quality control. The plastic guide at the end of the housing (where the push rod rides) is secured with a single screw. The screw boss showed a crack, likely from over-tightening during assembly at the factory. I also found no sealant applied at this interface, which could allow water ingress where the guide seats into the aluminum body; I plan to add sealant here. Inside the guide, there is an O-ring intended to provide sealing. However, the fit was fairly loose and did not inspire much confidence in its effectiveness. I replaced it with a slightly thicker O-ring to achieve a tighter seal without adding noticeable friction. Overall, the actuator functions well. It pulls strongly even under load on a car battery and does not sound like it struggles. It produces some noise during operation, but nothing excessive. I did not use the supplied mounting hardware, but it appears reasonably robust. There are a few quality control concerns, but at roughly $50, it is still a solid value for the performance. One limitation for my use case is that the non-driven clevis cannot be rotated 90 degrees, which would have made mounting easier with the included brackets. It appears to be cast in place, likely for strength. (UPDATED EDIT) I contacted the seller regarding the quality issues and they responded, but I never received notification from Amazon for this response. So, I changed my review from 3 to 4 stars. They were very grateful for the feedback and stated they would forward that information to their engineering department. They also offered me a partial refund for the part which I accepted.

Works good just a bit slow

Used on JD Gator bed lift

This actuator is painfully slow. Under load, it has to stop and "rest". It is powerful enough to do the job, just know you will have to monitor it because it will stop and you have to restart it . I would say I am somewhat disappointed with it.

I bought this to replace the failing motor for my trash compactor. The original was a 900n and this new one is 3000n. I can attest to its strength and power as it easily pressed my overflowing garbage can down at least 10”! In my area, the trash company will charge extra when the can is full to the point the lid doesn’t close all the way. The charges range from $20-$45 every two weeks. Ouch! This is typical when the kids come home from school breaks and our garbage can cannot accommodate the extra trash. Having this compactor saves me from having to get into the can from a ladder to jump up and down. One time while doing this, the can balance went sideways and I ended up falling down which really hurt. I am very pleased with the action of this unit and the cost. It will pay for itself in a months time.

Rouille et non étanche après 2 mois ne fonctionne plus