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20.4:1 Metal Gearmotor 25Dx50L mm HP 6V
This gearmotor consists of a high-power, 6 V brushed DC motor combined with a 20.4:1 metal spur gearbox. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. This gearmotor is also available with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 480 RPM, 420 mA | 4.8 kg⋅cm (67 oz⋅in), 6.0 A |
Alternatives available with variations in these parameter(s): gear ratio motor type encoders? Select variant…
Compare all products in 6V High-Power (HP) 25D mm Gearmotors.
| Description | Specs (16) | Pictures (10) | Resources (3) | FAQs (3) | On the blog (1) | Distributors (13) |
|---|
Dimensions
| Size: | 25D x 50L mm1 |
|---|---|
| Weight: | 85 g |
| Shaft diameter: | 4 mm2 |
General specifications
| Gear ratio: | 20.4:1 |
|---|---|
| No-load speed @ 6V: | 480 rpm3 |
| No-load current @ 6V: | 0.42 A4 |
| Stall current @ 6V: | 6.0 A5 |
| Stall torque @ 6V: | 4.8 kg·cm5 |
| Max output power @ 6V: | 5.9 W |
| Motor type: | 6V, 6.0A stall (HP 6V) |
Performance at maximum efficiency
| Max efficiency @ 6V: | 42 % |
|---|---|
| Speed at max efficiency: | 390 rpm |
| Torque at max efficiency: | 0.92 kg·cm |
| Current at max efficiency: | 1.5 A |
| Output power at max efficiency: | 3.7 W |
General specifications
| Encoders?: | N |
|---|
Notes:
- 1
- Length measurement is from gearbox face plate to back of motor (it does not include the output shaft or motor terminals). See dimension diagram for details.
- 2
- D shaft.
- 3
- Typical; ±20%.
- 4
- Typical, ±50%; no-load current depends on internal friction, which is affected by many factors, including ambient temperature and duration of motor operation.
- 5
- 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.
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