Pololu Metal Gearmotors » 25D Metal Gearmotors » 6V High-Power (HP) 25D mm Gearmotors »
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.
|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 (1)||On the blog (1)|
|Size:||25D x 50L mm1|
|Shaft diameter:||4 mm2|
|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|
- 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.
- D shaft.
- Typical; ±20%.
- Typical, ±50%; no-load current depends on internal friction, which is affected by many factors, including ambient temperature and duration of motor operation.
- 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.