RS-550 DC Motor with 3.17mm Round Shaft

Build a compatible mechanism around an RS-550-size DC motor with a round output shaft. Check the mounting and electrical requirements before choosing it as a replacement.

• ✅ Match a defined shaft - the 3.17 mm round output suits corresponding couplings.
• ✅ Use a compact motor body - the stated dimensions help plan the enclosure.
• ✅ Replace the motor separately - retain other compatible project components.

Match the Load Before Applying Power

Compare the shaft length, mounting-hole spacing and body clearance with your mechanism. A bare motor's no-load speed does not establish performance when driving a tool or propeller.

Confirm the actual motor label, suitable controller and power supply, including startup current and cooling. Guard moving parts and do not treat an unverified 'high torque' description as a rated mechanical output.

Technical details

• Model: RS-550.
• Shaft: approximately 3.17 mm diameter × 10.5 mm long.
• Body: approximately 36 mm diameter × 57 mm.
• Mounting: M3 holes, 25 mm spacing listed.
• Package: one blue motor.

Compare the dimensions and electrical requirements for your drive project.