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- Product Code: Pololu-3059
- MPN: 3059
This gearmotor is a miniature medium-power, 6 V brushed DC motor with a 986.41:1 metal gearbox, making it a great choice for applications requiring fine control at very low speeds. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 × 1 mm extended motor shaft.
Key specs at 6 V: 22 RPM and 40 mA with no load, 80 oz-in (6 kg-cm) and 0.7 A at stall. (Note: stall torque and current specifications are theoretical values; stalling the motor will damage the gearbox.)
These tiny brushed DC gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and with five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. The 6 V and 12 V HPCB motors offer the same performance at their respective nominal voltages, just with the 12 V motor drawing half the current of the 6 V motor. The 6 V HPCB and 6 V HP motors are identical except for their brushes, which only affect the lifetime of the motor.
The HPCB versions (shown on the left in the picture below) can be differentiated from versions with precious metal brushes (shown on the right) by their copper-colored terminals. Note that the HPCB terminals are 0.5 mm wider than those on the other micro metal gearmotor versions (2 mm vs. 1.5 mm), and they are about 1 mm closer together (6 mm vs. 7 mm).
Details for item #3059
Exact gear ratio: 25×34×35×34×34×34×2712×9×12×14×14×14×9≈986.41:1
This gearmotor is a miniature medium-power, 6 V brushed DC motor with a 986.41:1 metal gearbox, making it a great choice for applications requiring fine control at very low speeds. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 × 1 mm extended motor shaft. (Note: stall torque and current specifications are theoretical values; stalling the motor will damage the gearbox.)
voltage | no-load performance | stall extrapolation |
---|---|---|
6 V | 22 RPM, 40 mA | 6.5 kg⋅cm (90 oz⋅in), 0.67 A |
Dimensions
Size: | 10 × 12 × 29.5 mm1 |
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Shaft diameter: | 3 mm2 |
General specifications
Gear ratio: | 986.41:1 |
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No-load speed @ 6V: | 22 rpm |
No-load current @ 6V: | 0.04 A |
Stall current @ 6V: | 0.67 A3 |
Stall torque @ 6V: | 6.5 kg·cm3 |
Extended motor shaft?: | Y |
Motor type: | 0.67A stall @ 6V (MP 6V) |
Performance at maximum efficiency
Max efficiency @ 6V: | 24 % |
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Speed at max efficiency: | 17 rpm |
Torque at max efficiency: | 1.3 kg·cm |
Current at max efficiency: | 0.16 A |
Output power at max efficiency: | 0.23 W |
Notes
1. Output shaft adds 14 mm to the 29.5 mm length.
2. D Shaft.
3. This is a theoretical value; stalling the gearbox output shaft will damage the gearbox.