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The RS-550s 18V brushed DC motor is a compact, high-performance motor designed for DIY electronics, robotics, and power tool replacements. Operating optimally between 12-18 volts, it delivers up to 180 watts of power and spins at speeds up to 20,000 RPM. Its 3.175mm round shaft and durable alloy steel body make it a versatile and reliable choice for upgrading drills, RC vehicles, and other motorized projects.




| ASIN | B00TE42PME |
| Amperage | 10 Amps |
| Best Sellers Rank | #181,843 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #254 in Electric Fan Motors |
| Brand | ProTechTrader |
| Brand Name | ProTechTrader |
| Customer Reviews | 4.3 out of 5 stars 314 Reviews |
| Global Trade Identification Number | 00789048342524 |
| Horsepower | 180 Watts |
| Included Components | Motor |
| Item Dimensions W x H | 1.46"W x 2.24"H |
| Item Weight | 7.7 Ounces |
| Manufacturer | ProTechTrader |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model | RS-550 |
| Part Number | RS-550S-R |
| Product Dimensions | 1.46"W x 2.24"H |
| Shaft Diameter | 37.5 Millimeters |
| Speed | 20000 RPM |
| UPC | 789048342524 |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
S**T
Perfect replacement motor for BDCDMT120 B&D Matrix drill
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.
J**R
Perfect fit.
This motor was a perfect replacement for my two drills. It fit both my Black & Decker Matrix and my Craftsman Bolt On. I liked that the motor came without a gear on it so I was able to easily move the gear from the old motor to the new one. Replacement was simple and the new motors work great.
E**L
Work horse motor
This is a common motor with lots of torque used in many tools. Drills, saws etc. Very good to have for lots of projects.
K**N
Good
A little smaller than the original motor but works just fine. Get the job done little craftsman weedeater is what it went in.
R**E
Great replacement motor for my B&D 18V cordless trimmer
This motor was just what I needed to bring my 18V Black and Decker cordless trimmer back to life. It works better than ever now. :-) The original and probably this motor have brushes touching the commutator to get electricity to the coils. (absolutely normal for such motors) The only problem is that the brushes eventually wear out and replacement becomes necessary. Since the brushes are not replacable, one ends up replacing the whole motor and B&D has stopped making them. Also take care matching things up. Black and Decker made a wide array of different models some of which would not work with this motor. (but many do) ...requires visual inspection and checking the specs but it worked for me. The shaft was a bit shorter but still long enough to be just fine.
M**Z
Not for fan repair
It’s not meant for my ryobi fan repair but I could see it being okay for an RC toy - revs quickly. Super loud
M**E
Works as expected
I was skeptical when I ordered the motor, but besides having to remove the gear from the old motor and press it on to the new one, everything is working well.
C**O
Electric Motor for Drill? NOT!
purchased as replacement motor for 14.4V 3/8 inch chuck Craftsman VSR 0-600rpm drill/driver. NOT as measured in length - 3/8 inch shorter. terminals are 3/16 inch wide versus 1/4 on OEM. otherwise, matched physical size of OEM. after reassembling with new motor, trialed it with hand on chuck. NO torque. Nothing. I could hold chuck and completely stopped rotation. Does NOT have any power. Must only be good for RC toys. Avoid for power tools.
G**R
RAS
Pour portail électrique
L**N
Excelente repuesto
Mi taladro skil de 20V comenzó a sacar humo y chispas y pensé en comprar otro taladro pero vi esta opción y me llevé una agradable sorpresa. Muy buen precio y mejores prestaciones , el taladro quedó como nuevo y listo para seguir trabajando .
J**E
Did what I needed it to
Replaced my compressor motor with this one. It's a small tire inflator that's built into a car booster. I made sure this motor had all the same specs and it just dropped right in and has been serving me well since.
A**R
Good to deal with
Worked as planed
J**.
Quedo perfecto
Este motor lo instale en un taladro de la marca craftsman de la serie BOLT-ON y quedo perfecto, al principio tenia duda si le quedaria, me arriesgue quedo perfecto.
Trustpilot
2 months ago
3 weeks ago