Pololu Metal DC Gearmotors » 20D Metal Gearmotors » 6V Carbon Brush (CB) 20D Gearmotors »
31:1 Metal Gearmotor 20Dx41L mm 6V CB
These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 6V brushed DC motor with long-life carbon brushes combined with a 31.25:1 metal spur gearbox. The gearmotor is cylindrical with a diameter of 20 mm, and the D-shaped output shaft is 4 mm in diameter and extends 18 mm from the face plate of the gearbox.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 450 RPM, 150 mA | 2.0 kg⋅cm (28 oz⋅in), 2.9 A |
Alternatives available with variations in these parameter(s): gear ratio motor type extended motor shaft? Select variant…
Compare all products in 6V Carbon Brush (CB) 20D Gearmotors.
| Description | Specs (17) | Pictures (14) | Resources (3) | FAQs (3) | On the blog (0) | Distributors (0) |
|---|
Dimensions
| Size: | 20D × 43.2L mm1 |
|---|---|
| Weight: | 44 g |
| Shaft diameter: | 4 mm2 |
General specifications
| Gear ratio: | 31.25:1 |
|---|---|
| No-load speed @ 6V: | 450 rpm |
| No-load current @ 6V: | 0.15 A |
| Stall current @ 6V: | 2.9 A3 |
| Stall torque @ 6V: | 2.0 kg·cm3 |
| Max output power @ 6V: | 2.3 W |
| Extended motor shaft?: | N |
| Long-life carbon brushes?: | Y |
| Motor type: | 2.9A stall @ 6V CB (carbon brush) |
Performance at maximum efficiency
| Max efficiency @ 6V: | 37 % |
|---|---|
| Speed at max efficiency: | 360 rpm |
| Torque at max efficiency: | 0.39 kg·cm |
| Current at max efficiency: | 0.65 A |
| Output power at max efficiency: | 1.4 W |
Notes:
- 1
- Not including output shaft; output shaft adds 18 mm to the total length.
- 2
- D shaft.
- 3
- Stalling is likely to damage the gearmotor. Stall parameters come from a theoretical extrapolation of performance at loads far from stall. As the motor heats up, as happens as it approaches an actual stall, the stall torque and current decrease.
Related products
Related categories
Home | Forum | Blog | Support | Ordering Information | Lists | Distributors | BIG Order Form | About | Contact
© 2001–2025 Pololu Corporation
