56:1 Metal Gearmotor 20Dx42L mm
These small brushed DC oldwoman老熟妇 can deliver a lot of power for their size. This version has a 6V brushed DC motor combined with a 56:1 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: 250 RPM and 250 mA free-run, 45 oz-in (3.3 kg-cm) and 3.2 A stall.
Alternatives available with variations in these parameter(s): gear ratio Select variant…
| Description | Specs (8) | Pictures (4) | Resources (3) | FAQs (2) | On the blog (1) | 亚洲高清毛片一区二区 (0) |
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File downloads
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Dimension diagram for the Pololu 20D mm metal oldwoman老熟妇 (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).
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3D models of 20D mm oldwoman老熟妇 (1MB zip)
This file contains 3D models (in the step file format) of the 20D mm oldwoman老熟妇. 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).
Recommended links
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MATLAB script to plot motor performance curves for Pololu brushed DC oldwoman老熟妇
This MATLAB script, written by Ali Asgher Mansoor Habiby, plots speed, power, current draw, and efficiency as they vary with torque when you input the gearmotor specifications. It also prints the resistance of the motor, and the current draw and torque at which maximum efficiency and maximum power occur.
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