RS-550s 18v (12v - 20 Volts) DC Motor Round Shaft - High Power & Torque for DIY Electric/Electronic Projects, Drills, Robots, RC Vehicals, Remote Controlled Cars/Robot, Saw Repair/Replacement Engine

The motor on my Black & Deck Matrix drill (BDCDMT120C) went kaputt, so I set out to find a low-cost solution. ALL the reviews for the motor with the actual part number from the drill said that motor was worthless. I found a Reddit post recommending this motor. Lo and behold, it's the real deal.It is a perfect fit, and it fired right up after changing it out. It took about fifteen minutes to open the machine (eight screws), take the motor out, remove the spindle from the old shaft and put it on this one, put it back together, and start drilling again.The only weird thing is this new motor spins more slowly than the old one (rs -50vc-7527), but I don't really think that matters to me. If this motor lasts, then it's worth the money. If it doesn't, I will update this review.

I had a Black & Decker 14.4v drill whose motor had burned out. This motor seemed to be an exact replacement and turned out to be perfect. I was able to easily swap motors and have a drill that is like new for way less than a new one. I have used it for hours so far with no problems.

My B&D string trimmer's (Model LST220) motor wore out, or more accurately, the brushes disintegrated and locked up the motor. I prefer to repair rather than replace things, but B&D doesn't seem to offer replacement parts. A small electric motor seemed to be a pretty common part, so the search was on for a viable replacement. This RS-550s appeared to be the correct diameter, voltage, and RPM. Also, the mounting holes lined up exactly with the mounting holes on the trimmer's reduction drive part. The only issue was that it was shorter than the original motor. I used some scrap wood, the old motor, and epoxy to make an extension ring so that this new shorter motor would fit securely in the space where the old motor fit. The string trimmer has been used several times since I replaced the motor and it has worked well. No issues so far.

Probably runs better than when the trimmer was new, good through batteries quickly though.

Item arrived extremely fast, was very surprised at how fast it arrived. I was rebuilding a Black and Decker Matrix driver, the original motor (rs550vc-7525) was not readily easy to find or priced at where it would be a good rebuild item. After measuring and comparing all the specifications this motor was a great replacement, not only did it fit perfectly it was rated at the correct voltage for the driver. The original motor was rated for 12V but they used 20V to run it. This seems to be a much stronger motor than the original, and should last much longer. Wish all the sellers on Amazon reacted as fast as these sellers did, and packed the items as well.

Used to replace bad motor in cordless sander. Was shorter than original, but was able to secure n make it work. 18 volt cordless sander.

Shipped and arrived in a very timely manner. Great replacement motor that saves some $$ when repairing drills and other equipment. I use these replacement motors on my 20 volt Black and Decker Matrix drills. They fit perfect and they are more powerful and efficient than the OEM motors. A great product for people like me who like their B & D Matrix drills with all the attachments and does not want to go out and buy another complete set of some other brand of new drill motors when they don't have too! Only takes a few minutes with a little know how to replace these motors! Very pleased!

I used this motor to replace a drill motor and ended up burning out the motor after around 10 minutes of heavy use. Obviously I thought this was my fault and purchased yet another motor to replace the one that had burnt out. I checked my batteries with a multimeter to ensure they were within the rated voltage. After my 2nd installation of one of these motors I spun the drill for about 10 seconds with no load and then it stopped. No matter what I tried to revive the dead motor it wouldn't spin. It seems as though other people have had better experiences with these motors, but I felt it important to relay some of the quality issues that I found.