These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 6V brushed DC motor combined with a 62.5:1 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 specs at 6 V: 230 RPM and 170 mA at no load, 54 oz-in (3.9 kg-cm) and 2.9 A at stall.
These cylindrical brushed DC gearmotors are available in a wide range of gear ratios, from 25:1 up to 488:1, and with three different motors: 6 V and 12 V motors with long-life carbon brushes (CB), and a 6 V motor with shorter-life precious metal brushes. All three motors offer similar performances at their respective nominal voltages, just with the 12 V motor drawing approximately half the current of the 6 V motor and with the carbon brush versions having longer lifetimes than the one with precious metal brushes.
The CB versions (shown on the right in the picture below), can be differentiated from versions with percious metal brushes (shown on the left) by their copper-colored terminals.
The gearmotors all have 20 mm-diameter gearboxes and 4 mm-diameter gearbox output shafts, so it is generally easy to swap one version for another if your design requirements change (though the length of the gearbox tends to increase with the gear ratio).
|Size:||20D × 43L mm|
|Shaft diameter:||4 mm|
|Free-run speed @ 6V:||230 rpm|
|Free-run current @ 6V:||170 mA|
|Stall current @ 6V:||2.9 A1|
|Stall torque @ 6V:||54 oz·in1|
|Extended motor shaft?:||N|
|Motor type:||2.9A stall @ 6V|
- 1 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.
|Part. No. :||3452|
|Diam. Asse mm :||4|
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