12V Carbon Brush (CB) 20D Gearmotors

These 20D gearmotors have 12 V motors with a stall current of 1.6 A and a typical free-run current of 90 mA. They feature long-life carbon brushes and offer approximately the same performance at 12 V as the 6V CB versions offer at 6 V, just with half the current draw. The gearboxes, which are available in a wide range of gear ratios, all have 4 mm diameter, D-shaped output shafts, and the motors are optionally available with an additional 2 mm-diameter output shaft that rotates at the same speed as the input to the gearbox and offers a way to add an encoder, such as our magnetic encoder for 20D mm metal gearmotors.

The following table shows all of the versions available with this 12V CB motor:

Rated
Voltage
Brush Type Stall
Current
@ Rated Voltage
No-Load
Speed
@ Rated Voltage
Approximate
Stall Torque
@ Rated Voltage


Single-Shaft
(Gearbox Only)


Dual-Shaft
(Gearbox & Motor)
12 V long-life
carbon
(CB)
1.6 A 570 RPM 26 oz-in 25:1 12V CB 25:1 12V CB dual shaft
450 RPM 33 oz-in 31:1 12V CB 31:1 12V CB dual shaft
225 RPM 58 oz-in 63:1 12V CB 63:1 12V CB dual shaft
180 RPM 75 oz-in 78:1 12V CB 78:1 12V CB dual shaft
140 RPM 85 oz-in 100:1 12V CB 100:1 12V CB dual shaft
110 RPM 110 oz-in 125:1 12V CB 125:1 12V CB dual shaft
90 RPM 130 oz-in 156:1 12V CB 156:1 12V CB dual shaft
72 RPM 160 oz-in 195:1 12V CB 195:1 12V CB dual shaft
57 RPM 200 oz-in 250:1 12V CB 250:1 12V CB dual shaft
45 RPM 250 oz-in 313:1 12V CB 313:1 12V CB dual shaft
36 RPM 290 oz-in 391:1 12V CB 391:1 12V CB dual shaft
29 RPM 350 oz-in 488:1 12V CB 488:1 12V CB dual shaft

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. In order to avoid damaging the gearbox, we recommend keeping continuously applied loads under 50 oz-in (3.5 kg*cm) for the versions with precious metal brushes and under 70 oz-in (5 kg-cm) for the versions with carbon brushes (the ones with “CB” in the name). Stalls can also result in rapid (potentially on the order of a second) thermal damage to the motor windings and brushes, especially for motors like this that can deliver a lot of power for their size; a general recommendation for brushed DC motors is to limit continuous current to approximately 25% of the stall current.

Versions with other motors are also available. You can use the following selection boxes to choose from all of our 20D metal gearmotor versions:

Select options:

Products in category “12V Carbon Brush (CB) 20D Gearmotors”

Pololu item #: 3474
Brand: Pololu
Status: Active and Preferred 
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 25:1 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.

Key specs at 12 V: 570 RPM and 90 mA with no-load, 26 oz-in (1.9 kg-cm) and 1.6 A at stall.

Pololu item #: 3486
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
Out of stock.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 25:1 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 12 V: 570 RPM and 90 mA with no-load, 26 oz-in (1.9 kg-cm) and 1.6 A at stall.

Pololu item #: 3475
Brand: Pololu
Status: Active and Preferred 
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 31.25:1 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.

Key specs at 12 V: 450 RPM and 90 mA with no-load, 33 oz-in (2.4 kg-cm) and 1.6 A at stall.

Pololu item #: 3487
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
Out of stock.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 31.25:1 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 12 V: 450 RPM and 90 mA with no-load, 33 oz-in (2.4 kg-cm) and 1.6 A at stall.

Pololu item #: 3476
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 62.5:1 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.

Key specs at 12 V: 225 RPM and 90 mA with no-load, 58 oz-in (4.2 kg-cm) and 1.6 A at stall.

Pololu item #: 3488
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
Out of stock.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 62.5:1 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 12 V: 225 RPM and 90 mA with no-load, 58 oz-in (4.2 kg-cm) and 1.6 A at stall.

Pololu item #: 3477
Brand: Pololu
Status: Active and Preferred 
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes 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.

Key specs at 12 V: 180 RPM and 90 mA with no-load, 75 oz-in (5.4 kg-cm) and 1.6 A at stall.

Pololu item #: 3489
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes 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 12 V: 180 RPM and 90 mA with no-load, 75 oz-in (5.4 kg-cm) and 1.6 A at stall.

Pololu item #: 3478
Brand: Pololu
Status: Active and Preferred 
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 100:1 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.

Key specs at 12 V: 140 RPM and 90 mA with no-load, 85 oz-in (6.1 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3490
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 100:1 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 12 V: 140 RPM and 90 mA with no-load, 85 oz-in (6.1 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3479
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 125:1 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.

Key specs at 12 V: 110 RPM and 90 mA with no-load, 110 oz-in (7.9 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3491
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 125:1 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 12 V: 110 RPM and 90 mA with no-load, 110 oz-in (7.9 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3480
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 156.3:1 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.

Key specs at 12 V: 90 RPM and 90 mA with no-load, 130 oz-in (9.5 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3492
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 156.3:1 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 12 V: 90 RPM and 90 mA with no-load, 130 oz-in (9.5 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3481
Brand: Pololu
Status: Active and Preferred 
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Temporarily out of stock. See product page to backorder.
Out of stock.
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These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 195.3:1 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.

Key specs at 12 V: 72 RPM and 90 mA with no-load, 160 oz-in (11.5 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3493
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 195.3:1 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 12 V: 72 RPM and 90 mA with no-load, 160 oz-in (11.5 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3482
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes 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.

Key specs at 12 V: 57 RPM and 90 mA with no-load, 200 oz-in (14.5 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3494
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes 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 12 V: 57 RPM and 90 mA with no-load, 200 oz-in (14.5 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3483
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 312.5:1 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.

Key specs at 12 V: 45 RPM and 90 mA with no-load, 250 oz-in (18 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3495
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 312.5:1 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 12 V: 45 RPM and 90 mA with no-load, 250 oz-in (18 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3484
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 390.6:1 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.

Key specs at 12 V: 36 RPM and 90 mA with no-load, 290 oz-in (21 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3496
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 390.6:1 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 12 V: 36 RPM and 90 mA with no-load, 290 oz-in (21 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3485
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 488.3:1 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.

Key specs at 12 V: 29 RPM and 90 mA with no-load, 350 oz-in (25 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

Pololu item #: 3497
Brand: Pololu
Status: Active and Preferred 
Free shipping in USA 
Temporarily out of stock. See product page to backorder.
Out of stock.
Quantity:

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 12V brushed DC motor with long-life carbon brushes combined with a 488.3:1 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 12 V: 29 RPM and 90 mA with no-load, 350 oz-in (25 kg-cm) and 1.6 A at stall. Note: the gearbox torque limit is 70 oz-in (5 kg-cm); see detailed description for important product limitations.

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