Pololu Metal DC Gearmotors » 20D Metal Gearmotors » 6V Precious Metal Brush 20D Gearmotors »
250:1 Metal Gearmotor 20Dx46L 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 250:1 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: 57 RPM and 170 mA with no load, 170 oz-in (12 kg-cm) and 2.9 A at stall.  Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.
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.
Compare all products in 6V Precious Metal Brush 20D Gearmotors.
| Description | Specs (10) | Pictures (14) | Resources (3) | FAQs (3) | On the blog (0) | Distributors (24) | 
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| 20D mm metal gearmotor with precious metal brushes (left) next to a 20D CB version with long-life carbon brushes. | 
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| 20D mm metal gearmotor precious metal brushes (left) next to 20D 6V CB and 12V CB long-life carbon brushes. | 
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| 20D mm metal gearmotor CB with long-life carbon brushes. | 
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| 20D mm metal gearmotor CB with long-life carbon brushes. | 
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| 20D mm metal gearmotor with precious metal brushes. | 
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| 20D mm metal gearmotor with precious metal brushes. | 
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| 20D mm metal gearmotor with precious metal brushes and extended motor shaft. | 
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| 20D mm metal gearmotor with a univeral aluminum mounting hub and mounted on a 20D mm metal gearmotor bracket. | 
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| 70×8mm Pololu wheel with 4mm hub adapter installed on a 20D mm metal gearmotor. | 
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| Dagu Wild Thumper wheel 120×60mm (metallic red) with Pololu 20D mm metal gearmotor. | 
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| Magnetic Encoder Kit for 20D mm Metal Gearmotors assembled on a 20D mm metal gearmotor with extended motor shaft. | 
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| Magnetic Encoder Kit for 20D mm Metal Gearmotors assembled on a 20D mm metal gearmotor with extended motor shaft. | 
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| Dimensions of the Pololu 20D mm metal gearmotors. Units are mm over [inches]. This diagram only applies to the listed gear ratios. | 
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| An assortment of Pololu metal gearmotors. | 
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