Pololu Metal Gearmotors » 20D Metal Gearmotors » 6V Precious Metal Brush 20D Gearmotors »
78:1 Metal Gearmotor 20Dx43L mm 6V with Extended Motor Shaft
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 78.13:1 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. This version also has a 6 × 2 mm extended motor shaft.
Key specs at 6 V: 180 RPM and 170 mA with no load, 62 oz-in (4.5 kg-cm) and 2.9 A at stall.
Alternatives available with variations in these parameter(s): gear ratio motor type extended motor shaft? Select variant…
Compare all products in 6V Precious Metal Brush 20D Gearmotors.
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File downloads
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Datasheet for Pololu 20D Metal Gearmotors (1MB pdf)
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Dimension diagram for the Pololu 20D mm metal gearmotors (99k pdf)
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3D models of 20D mm gearmotors (3MB zip)
This file contains 3D models (in the step file format) of the 20D mm gearmotors. Note: these models only accurately represent our newer versions with 18mm-long output shafts; they are not accurate representations of the older versions with shorter output shafts (i.e. gear ratios 29:1, 56:1, 73:1, and 154:1).
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