Need DC motor having high holding torque

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SUMMARY

The discussion focuses on selecting a DC geared motor for a wireless robotic arm project, emphasizing the need for low RPM, high starting torque, and high holding torque. A recommendation is made to use a worm drive with a standard small DC motor, which provides significant gear reduction (≥10:1) and excellent holding torque due to friction. Participants are directed to hobbyist websites for sourcing suitable motors, including links to Discover Circuits, Hobby Engineering, and MPJA.

PREREQUISITES
  • Understanding of DC motor specifications, including RPM and torque.
  • Familiarity with worm drive mechanics and their applications.
  • Basic knowledge of microcontroller integration with motors.
  • Experience in sourcing components from hobbyist electronics suppliers.
NEXT STEPS
  • Research worm drive gear systems for DC motors.
  • Explore low RPM DC motor options on hobbyist websites.
  • Learn about torque calculations for robotic applications.
  • Investigate microcontroller interfacing techniques for motor control.
USEFUL FOR

Robotics enthusiasts, hobbyist engineers, and anyone involved in designing and building robotic systems requiring precise motor control and torque management.

harshrajs7313
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Hello Mates,

I m making my project on Wireless robotic arm using microcontroller. I need DC Geared Motor with following specifications:

1) low RPM.
2) High Starting torque.
3) High Holding torque.

Can any1 please help me in selecting motor ??
 
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Sounds to me like you need a worm drive on a standard small DC motor. Worm drives 'gear down' dramatically and are not too efficient so the holding torque is very good (due to the friction). A small motor needs to rev high, so a >=10:1 reduction would be quite handy. I should think.
 

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