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DC Motors for Robotics

From collaborative robot joints to AGV drives — precision motors for every robotic application.

Why Motor Selection Is Critical for Robotics

Robotic systems demand motors that deliver consistent performance across millions of cycles. Whether you're designing a 6-axis robot arm, a delta-style pick-and-place system, or an autonomous guided vehicle (AGV), the motor is the most performance-critical component in your drivetrain.

Key requirements for robotic motors include low cogging torque for smooth motion, high torque density to minimize weight, built-in encoder compatibility for closed-loop control, and broad speed range with consistent torque throughout.

BLDC motors are the dominant choice for robotic joints due to their high efficiency, long service life, and excellent power-to-weight ratio. Coreless DC motors excel in lightweight end-effectors and grippers where inertia matters. Gear motors provide the torque multiplication needed for heavy-load joints.

Motor Types by Robotic Application

Robot Arms & Joints

Servo-class BLDC motors with integrated encoders, planetary gearboxes for high-ratio reduction, and low-backlash transmission. Recommended: Maxon EC-i series, Nanotec BL110.

  • 24–48V operating voltage
  • Planetary gearbox 10:1–200:1
  • 512CPR+ encoder feedback
  • IP40+ protection
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AGV & Mobile Robots

High-efficiency gear motors for drive wheels, coreless motors for steering, BLDC for traction. Needs wide voltage range, encoder feedback, and regenerative braking capability.

  • 24–48V, 100W–1kW per wheel
  • Spur or planetary gearbox
  • Hall sensors + encoder
  • IP54 dust/splash protection
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End-Effectors & Grippers

Coreless and miniature brushed DC motors for lightweight, fast-response gripper applications. Low inertia is essential — coreless design eliminates iron losses.

  • 3.3–24V micro motors
  • Body diameter <16mm
  • Precious metal brushes
  • 1–5W power range
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Frequently Asked Questions

What is the best motor type for a 6-axis robot arm?

BLDC servo motors with planetary gearboxes are the industry standard for robot arm joints. The combination of high torque density, precise encoder feedback, and long service life makes them ideal. For joints 4-6 (wrist axes), coreless motors reduce inertia significantly.

Do I need a motor with an integrated encoder?

For closed-loop position and velocity control — yes. Most robot joints require absolute or incremental encoders with 512CPR minimum. We supply motors with matched encoder options; 1000–4096CPR is recommended for high-precision joints.

What voltage bus is standard in robotics?

24V is the most common bus voltage for small to mid-size robots (cobot payloads up to 10kg). 48V is increasingly standard for larger collaborative robots and industrial arms due to lower current at the same power, reducing cable size and thermal losses.

Can you supply motors with custom shaft configurations?

Yes. We offer D-cut, keyway, dual shaft, and custom-length shaft options on most models. MOQ for custom shaft configurations starts at 10 pieces with 3–4 week lead time.

Ready to source motors for your robotics project?

Browse our full catalog or send us your specs — we'll respond within 48 hours with pricing and availability.