6V Precious Metal Brush 20D Gearmotors

These 20D gearmotors have 6 V motors with a stall current of 2.9 A and a typical free-run current of 170 mA. These motors feature precious metal brushes; versions with longer-life carbon brushes are also available. 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 6V 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)
6 V precious
metal
2.9 A 590 RPM 22 oz-in 25:1 6V 25:1 6V dual-shaft
470 RPM 28 oz-in 31:1 6V 31:1 6V dual-shaft
230 RPM 54 oz-in 63:1 6V 63:1 6V dual-shaft
190 RPM 62 oz-in 78:1 6V 78:1 6V dual-shaft
150 RPM 72 oz-in 100:1 6V 100:1 6V dual-shaft
120 RPM 87 oz-in 125:1 6V 125:1 6V dual-shaft
93 RPM 110 oz-in 156:1 6V 156:1 6V dual-shaft
75 RPM 130 oz-in 195:1 6V 195:1 6V dual-shaft
60 RPM 170 oz-in 250:1 6V 250:1 6V dual-shaft
46 RPM 220 oz-in 313:1 6V 313:1 6V dual-shaft
37 RPM 260 oz-in 391:1 6V 391:1 6V dual-shaft
30 RPM 310 oz-in 488:1 6V 488:1 6V 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:

Alternatives available with variations in these parameter(s): gear ratio motor type extended motor shaft? Select variant…

Products in category “6V Precious Metal Brush 20D Gearmotors”

Pololu item #: 3450
Brand: Pololu
Status: Active 
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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 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 6 V: 590 RPM and 170 mA with no-load, 22 oz-in (1.6 kg-cm) and 2.9 A at stall.

Pololu item #: 3462
Brand: Pololu
Status: Active 
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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 6V brushed DC motor 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 6 V: 590 RPM and 170 mA with no-load, 22 oz-in (1.6 kg-cm) and 2.9 A at stall.

Pololu item #: 3451
Brand: Pololu
Status: Active 
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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 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 6 V: 470 RPM and 170 mA with no load, 28 oz-in (2.0 kg-cm) and 2.9 A at stall.

Pololu item #: 3463
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 470 RPM and 170 mA with no load, 28 oz-in (2.0 kg-cm) and 2.9 A at stall.

Pololu item #: 3452
Brand: Pololu
Status: Active 
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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 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 6 V: 230 RPM and 170 mA at no load, 54 oz-in (3.9 kg-cm) and 2.9 A at stall.

Pololu item #: 3464
Brand: Pololu
Status: Active 
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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 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 6 V: 230 RPM and 170 mA at no load, 54 oz-in (3.9 kg-cm) and 2.9 A at stall.

Pololu item #: 3453
Brand: Pololu
Status: Active 
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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 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 6 V: 190 RPM and 170 mA with no load, 62 oz-in (4.5 kg-cm) and 2.9 A at stall.

Pololu item #: 3465
Brand: Pololu
Status: Active 
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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 6V brushed DC motor 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 6 V: 190 RPM and 170 mA with no load, 62 oz-in (4.5 kg-cm) and 2.9 A at stall.

Pololu item #: 3454
Brand: Pololu
Status: Active 
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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 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 6 V: 150 RPM and 170 mA with no load, 72 oz-in (5.2 kg-cm) and 2.9 A at stall.

Pololu item #: 3466
Brand: Pololu
Status: Active 
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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 6V brushed DC motor 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 6 V: 150 RPM and 170 mA with no load, 72 oz-in (5.2 kg-cm) and 2.9 A at stall.

Pololu item #: 3455
Brand: Pololu
Status: Active 
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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 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 6 V: 120 RPM and 170 mA with no load, 87 oz-in (6.3 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.

Pololu item #: 3467
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 120 RPM and 170 mA with no load, 87 oz-in (6.3 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.

Pololu item #: 3456
Brand: Pololu
Status: Active 
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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 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 6 V: 93 RPM and 170 mA with no load, 110 oz-in (7.9 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.

Pololu item #: 3468
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 93 RPM and 170 mA with no load, 110 oz-in (7.9 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.

Pololu item #: 3457
Brand: Pololu
Status: Active 
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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 6V brushed DC motor 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 6 V: 75 RPM and 170 mA with no load, 130 oz-in (9.5 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.

Pololu item #: 3469
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 75 RPM and 170 mA with no load, 130 oz-in (9.5 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.

Pololu item #: 3458
Brand: Pololu
Status: Active 
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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 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.

Key specs at 6 V: 60 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.

Pololu item #: 3470
Brand: Pololu
Status: Active 
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 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: 60 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.

Pololu item #: 3459
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 46 RPM and 170 mA with no load, 220 oz-in (16 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.

Pololu item #: 3471
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 46 RPM and 170 mA with no load, 220 oz-in (16 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.

Pololu item #: 3460
Brand: Pololu
Status: Active 
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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 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 6 V: 37 RPM and 170 mA with no load, 260 oz-in (19 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.

Pololu item #: 3472
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 37 RPM and 170 mA with no load, 260 oz-in (19 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.

Pololu item #: 3461
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 30 RPM and 170 mA with no load, 310 oz-in (23 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.

Pololu item #: 3473
Brand: Pololu
Status: Active 
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 6V brushed DC motor 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 6 V: 30 RPM and 170 mA with no load, 310 oz-in (23 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.

Pololu item #: 1163
Brand: Pololu
Status: Not Recommended for New Design 
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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.

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