900 RPM Micro Gearmotor running at 12V produces an output of 150RPM

Hello,

I’m just enquiring about an order I’ve made with a motor I bought from Core-Electronics, its supposed to be a 900RPM Micro Gearmotor, and it is rated to run at 12V. We’ve hooked up the motor to a 12V DC power supply, and only got 150RPM out. I’m just wondering if there’s a step we’ve overlooked here. We really need this 900RPM, so any help provided would be appreciated.

Yona

Hi Yona,

That seems strange, so I’ll try and help out as best as I can.

Does the sticker on the bag say ROB-12316? Are there any other markings on the motor itself that identify it, like a model number?
What was your setup for measuring the RPM? Optical or mechanical?
What kind of amperage was the motor pulling from the power supply?