1000:1 Micro Metal Gearmotor HPCB 12V
- Order number: Pololu-3046
- Manufacturer product ID: 3046
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).
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Details for item #3046
Exact gear ratio: 25×34×35×34×34×34×2712×9×12×14×14×14×9≈986.41:125×34×35×34×34×34×2712×9×12×14×14×14×9≈986.41:1
This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 986.41:1 metal gearbox. 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. (Note: stall torque and current specifications are theoretical values; stalling the motor will damage the gearbox.)
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 12 V | 35 RPM, 60 mA | 10 kg⋅cm (140 oz⋅in), 0.75 A |
Dimensions
| Size: | 10 × 12 × 29.5 mm1 |
|---|---|
| Shaft diameter: | 3 mm2 |
General specifications
| Gear ratio: | 986.41:1 |
|---|---|
| No-load speed @ 12V: | 35 rpm |
| No-load current @ 12V: | 0.06 A |
| Stall current @ 12V: | 0.75 A3 |
| Stall torque @ 12V: | 10 kg·cm3 |
| No-load speed @ 6V: | 18 rpm4 |
| No-load current @ 6V: | 0.05 A4 |
| Stall current @ 6V: | 0.38 A5 |
| Stall torque @ 6V: | 5 kg·cm5 |
| Extended motor shaft?: | N |
| Long-life carbon brushes?: | Y |
| Motor type: | 0.75A stall @ 12V (HPCB 12V - carbon brush) |
Performance at maximum efficiency
| Max efficiency @ 12V: | 25 % |
|---|---|
| Speed at max efficiency: | 27 rpm |
| Torque at max efficiency: | 2.1 kg·cm |
| Current at max efficiency: | 0.19 A |
| Output power at max efficiency: | 0.59 W |
Notes
1. Output shaft adds 9 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.
4. This motor will run at 6 V but is intended for operation at 12 V.
5. This is a theoretical value; stalling the gearbox output shaft will damage the gearbox. This motor will run at 6 V but is intended for operation at 12 V.
