Standard Gearmotor - 0.5 RPM (3-12V)

These standard gearmotors are incredibly tough and feature full metal gears to help you drive wheels, gears, or almost anything else that needs to turn. They have a gear ratio of 3000:1 and operate up to 12 volts and deliver a stall torque of 2995 oz-in. and a max speed of 0.5 RPM. Each standard gearmotor sports a 6mm diameter D-shaft.

Important: The manufacturer has issued a warning that stalling the motor can cause gear damage. Please keep this in mind for testing & using this motor.
  • Voltage: 3 - 12 Volts
  • Gear Ratio: 3000:1
  • Stall Torque: 2995.2 oz-in. (@ 12V)
  • Speed: 0.5 RPM (@ 12V)
  • No Load Current: 95 mA (@ 12V)
  • Stall Current: 0.5 A (@ 12V)
  • Insulation Resistance: 10 MOhm
  • Dielectric Strength: 300VDC
  • DC Reversible
  • Shaft Size: 6mm Diameter x 1.23” Length
  • Weight: 4.9 oz.

Standard Gearmotor - 0.5 RPM (3-12V) Product Help and Resources

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Gear Ratio Clarification

Some of you all may have noticed that this motor has the same gear ratio and stall torque as the Standard Gearmotor - 1 RPM. These values are identical because the 0.5 RPM motor has a different winding than the 1 RPM, resulting in a lower speed but near identical gear ratio and stall torque. This is done because the gearbox cannot handle a larger load. We hope this clears up any confusion.

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Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Joe48 / about 2 years ago / 1

    The Torque is wrong . It is impossible to have 2995 ounce-inch . Thanks.

  • GraysonR / about 7 years ago / 1

    So, in the picture, I see three screws, though I expect that there is another one in the hole behind the shaft. Are those screws for mounting or do they hold the assembly together?

    Thanks, -Grayson

  • SFE,

    For these motors, can we PLEASE get some sort of datasheet for each model, or at least a power and torque curve. That kind of information is important! These parts are too expensive to employ the guess and check method when you're designing for complex systems!


  • Is it possible that this spec should be Gear Ratio of 6000:1 and the stall torque is 5999 oz-in? That would seem correct given the specs on 1 RPM and 2 RPM gear motors.

    • Member #32675 / about 7 years ago / 1

      An answer to this and the request for torque curve would be really nice.

      • M-Short / about 7 years ago / 1

        I did double check the suppliers product page and the specs listed on our page are correct. I'll look into getting a torque curve from them.

Customer Reviews

4.3 out of 5

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1 of 1 found this helpful:

A nice slow motor

I'm building a high resolution encoder system for telescopes. Needed a slow motor for some tests. It is nice and slow.

Works as advertised.

Works as advertised.


It's a great DC gear motor The torque is enough to rotate another platform and support scaffolding that has yet another motor. It is robust and uses much less power than I thought.