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โ๏ธ Upgrade your toolkit with the motor that powers innovation at 20K RPM!
The RS-550S 18V DC Motor is a high-speed, high-torque brushed motor featuring a 3.175mm D-shaft designed for power tool drill replacements and DIY robotics. Operating optimally at 18 volts, it delivers up to 20,000 RPM with 70.55 oz-in torque, making it ideal for remote-controlled cars, PowerWheels, and various custom projects. Compact and lightweight, it fits many 3/8in drills and outdoor tools, but compatibility should be verified before purchase.






| ASIN | B07DYTM7NQ |
| Best Sellers Rank | #515,723 in Toys & Games ( See Top 100 in Toys & Games ) #1,410 in RC Electric Motors |
| Brand | ProTechTrader |
| Brand Name | ProTechTrader |
| Customer Reviews | 3.9 out of 5 stars 79 Reviews |
| Horsepower | 180 Watts |
| Included Components | Motor |
| Manufacturer | ProTechTrader |
| Material | carbon |
| Material Type | carbon |
| Model | RS-550S-D |
| Part Number | RS-550S-D |
| Shaft Diameter | 3.18 Millimeters |
| Speed | 20000 RPM |
| UPC | 789048342517 |
| Voltage | 18 Volts |
K**K
Common motor
This type of motor is used in many battery operated tools such as drills, etc. I needed it to power a lead screw on a custom cutting machine that I made. The motor has been working flawlessly.
O**N
Not big enough motor
This motor was not a replacement motor for Dewalt drill.It was way under sized and do not even have teeth or gears on a shaft
B**Y
Not sure if this is going to work.
Item received was not new it appears used. Terminal points have pre-soldered wires snipped off. The packaging was torn open.
A**P
Good motor for wide range of projects
Updated review, after a small issue with my order, i was contacted by the seller and they kindly took care of the issue providing a new item... customer service was quick and considerate... would definitely do business with again!
R**E
Not as described
The D motor shaft turned to rounding the flat edge thus does not hold the gear solid and spins with any resistance. Guess only option is to try J B Weld to fill in the open spaces, otherwise Amazon has a sale coming up on the 7th
J**.
Strong compact variable DC voltage input motor.
I have yet to spin this motor with a different motor to see the output voltage. Just giving this motor as minimal as a Energizer Lithium 9v battery, it performs past most motors ive played with this size. Well made. (Outside cover/sleeve of the motor is loose, slips around. Its pretty much useless)
K**E
B&D Matrix 20v motor replacement
Bought this to replace a motor in a black and decker Matrix drill I burnt out. Works great, direct fit.
J**.
As Advertised
Motor came as advertised. I had trouble using a power supply with the motor because of inrush current. Wiring in a PWM controller alleviated this. Also running on batteries worked great. Would recommend.
K**M
Very good and strong
Really good motor. Used it to convert a 7.2 volt lincoln grease gun to use a 18 volt milwaukee battery. Exactly as described and strong performance. I reccomend.
R**C
Motor
They are really slow for rc cars( Traxxas Summit).
D**N
Very powerful!
I bought two of these motors to put in my sons ride on atv for an 18v upgrade. They work very well with lots of torque and great speed!
J**Y
Nice
Good work nice delivery before on time
Trustpilot
3 weeks ago
2 months ago