73:1 Metal Gearmotor 20Dx42L mm (Short Output 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 73:1 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 10.7 mm from the face plate of the gearbox.
Key specs at 6 V: 180 RPM and 250 mA free-run, 60 oz-in (4.3 kg-cm) and 3.2 A stall.
Note: This gearmotor is being replaced by a new version with a slightly different gear ratio and a longer output shaft (the motor portion is unchanged). This short-shaft version will be discontinued when the remaining stock is gone.
Alternatives available with variations in these parameter(s): gear ratio
|Description||Specs (8)||Pictures (4)||Resources (3)||FAQs (2)||On the blog (1)|
- Dimension diagram for the Pololu 20D mm metal gearmotors (172k pdf)
- Note: This dimension diagram only applies to our older versions with shorter output shafts (gear ratios 29:1, 56:1, 73:1, and 154:1 only).
- 3D models of 20D mm gearmotors (1MB zip)
- This file contains 3D models (in the step file format) of the 20D mm gearmotors. Note: these models only accurately represent to our older versions with shorter output shafts (i.e. gear ratios 29:1, 56:1, 73:1, and 154:1).