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Four tiny silver cylindrical motors with red and black wires lying side by side

Unique-Bargains

Unique-Bargains DC 3V 40000RPM Coreless Micro Motor 612 6x12mm 4PCS

SKU CH-SGP1-KG8KW

Set of four 3 V coreless micro motors rated at 40 000 RPM with 0.8 mm shafts for RC aircraft and vibration devices

  • Ready for micro builds with 6 x 12 mm footprint
  • High 40000 RPM speed for responsive RC models
  • Coreless design gives low noise and high efficiency
  • Four motors per pack for multi-axis projects
  • Pre-wired 40 mm leads simplify installation

What it is and who it's for

This pack contains four new coreless DC micro motors rated at 3 V and 40000 RPM with a 20% tolerance. Each unit measures 6 x 12 mm overall with a 0.8 x 4 mm shaft and 40 mm leads. They suit hobbyists building lightweight RC aircraft, vibration modules or compact electronic toys.

Installation and common pitfalls

Solder the 40 mm leads directly to a 3 V source; the coreless design keeps current draw low. Never stall the 0.8 mm shaft while powered or the winding will burn out in seconds. Ensure the driven load starts freely to avoid instantaneous overheating.

Compatibility checks before ordering

Verify your project can supply a steady 3 V DC and that the 6 mm diameter body fits the available mounting space. Confirm the 0.8 mm shaft matches your propeller, pinion or vibration weight bore. Check that 40000 RPM is within the mechanical limits of the attached component.

Highlights

  • Ready for micro builds with 6 x 12 mm footprint
  • High 40000 RPM speed for responsive RC models
  • Coreless design gives low noise and high efficiency
  • Four motors per pack for multi-axis projects
  • Pre-wired 40 mm leads simplify installation

Specifications

BrandUnique Bargains

Questions about this item

How can I verify the 40000RPM motor is running correctly after wiring it to a 3V supply?

Measure the no-load speed with a tachometer; it should read within the 40000RPM+/-20% range and the motor should spin freely with low noise.

What comes in the package and do I need to buy connectors or mounting hardware separately?

The box contains 4 coreless micro motors with 40mm cables pre-attached; no connectors, mounts or additional hardware are included.

Which shaft diameter matches the 0.8mm spec for my 612-size gearbox?

The shaft is 0.8mm in diameter by 4mm long, matching the 612 motor dimensions listed.

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