99:1 Metal Gearmotor 25Dx69L mm LP 12V with 48 CPR Encoder
This gearmotor consists of a low-power, 12 V brushed DC motor combined with a 98.78:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 4741.44 counts per revolution of the gearbox’s output shaft. 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 without an encoder.
|voltage||no-load performance||stall extrapolation|
|12 V||55 RPM, 100 mA||8 kg⋅cm (115 oz⋅in), 1.1 A|
Alternatives available with variations in these parameter(s): gear ratio motor type encoders?
|Description||Specs (14)||Pictures (11)||Resources (4)||FAQs (2)||On the blog (0)|
- Dimension diagram of the Pololu 25D Metal Gearmotors (171k pdf)
- 3D models of 25D mm gearmotors (10MB zip)
- This file contains 3D models (in the step file format) of the 25D mm gearmotors with and without encoders.
- Modifying the Wild Thumper to use motors with encoders (3MB pdf)
Note: This is not an easy modification, and the chassis can be damaged if it is not done properly, so we generally recommend against it, and we can only provide very limited support for those who want to attempt it. The manufacturer did not intend for the chassis to be modified in this way, and we do not know how well such a modification will work out.