Motors and Gearboxes » Pololu Metal Gearmotors » 25D Metal Gearmotors »
6V Low-Power (LP) 25D mm Gearmotors
These 25D mm gearmotors have low-power (LP), 6 V motors with a stall current of 2 A and a typical free-run current of 120 mA. The gearboxes, which are available in a wide range of gear ratios, all have 4 mm diameter, D-shaped output shafts. The following table shows all of the versions available with the LP 6V motor:
| Motor Type |
Rated Voltage |
Stall Current |
No-Load Current |
Gear Ratio | No-Load Speed (RPM) |
Extrapolated Stall Torque |
Max Power (W) |
 Without Encoder |
 With Encoder |
|
|---|---|---|---|---|---|---|---|---|---|---|
| (kg ⋅ cm) | (oz ⋅ in) | |||||||||
| Low-Power (LP) 6 V |
6 V | 2.0 A | 100 mA w/o encoder 120 mA with encoder |
1:1 (no gearbox) | 6200 | 0.15 | 2.1 | 2.1 | – | item #4820 |
| 4.4:1 | 1300 | 0.63 | 8.7 | 2.1 | item #1581 | item #4821 | ||||
| 9.7:1 | 630 | 1.3 | 18 | 1.9 | item #1582 | item #4822 | ||||
| 20.4:1 | 290 | 2.5 | 35 | 1.9 | item #1583 | item #4823 | ||||
| 34:1 | 180 | 3.9 | 54 | 1.7 | item #1584 | item #4824 | ||||
| 47:1 | 130 | 4.8 | 67 | 1.5 | item #1585 | item #4825 | ||||
| 75:1 | 80 | 7.5 | 100 | 1.5 | item #1586 | item #4826 | ||||
| 99:1 | 61 | 9.1 | 130 | 1.4 | item #1587 | item #4827 | ||||
| 172:1 | 35 | 14 | 190 | 1.2 | item #1588 | item #4828 | ||||
| 227:1 | 27 | 17 | 240 | 1.1 | item #1589 | item #4829 | ||||
| 378:1 | 16 | 25 | 350 | – | item #1590 | item #4830 | ||||
| 499:1 | 12 | 31 | 430 | – | item #1591 | item #4831 | ||||
Note: The listed stall torques and currents are theoretical extrapolations; units will typically stall well before these points as the motors heat up. Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. The recommended upper limit for continuously applied loads is 4 kg⋅cm (55 oz⋅in), and the recommended upper limit for intermittently permissible torque is 8 kg⋅cm (110 oz⋅in). Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes; a general recommendation for brushed DC motor operation is 25% or less of the stall current.
Versions with other motors are also available. You can use the following selection boxes to choose from all of our 25D metal gearmotor versions:
Alternatives available with variations in these parameter(s): gear ratio motor type encoders? Select variant…
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Products in category “6V Low-Power (LP) 25D mm Gearmotors”
| Pololu item #: 1581 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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 Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 4.4:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 1300 RPM, 100 mA | 0.63 kg⋅cm (8.7 oz⋅in), 2.0 A |
| Pololu item #: 4821 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 4.4:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 211.2 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 1300 RPM, 120 mA | 0.63 kg⋅cm (8.7 oz⋅in), 2.0 A |
| Pololu item #: 1582 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 9.68:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 630 RPM, 100 mA | 1.3 kg⋅cm (18 oz⋅in), 2.0 A |
| Pololu item #: 4822 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 9.68:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 464.64 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 630 RPM, 120 mA | 1.3 kg⋅cm (18 oz⋅in), 2.0 A |
| Pololu item #: 1583 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 20.4:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 290 RPM, 100 mA | 2.5 kg⋅cm (35 oz⋅in), 2.0 A |
| Pololu item #: 4823 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 20.4:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 979.62 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 290 RPM, 120 mA | 2.5 kg⋅cm (35 oz⋅in), 2.0 A |
| Pololu item #: 1584 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 34.014:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 180 RPM, 100 mA | 3.9 kg⋅cm (54 oz⋅in), 2.0 A |
| Pololu item #: 4824 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 34.014:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 1632.67 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 180 RPM, 120 mA | 3.9 kg⋅cm (54 oz⋅in), 2.0 A |
| Pololu item #: 1585 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 46.85:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 130 RPM, 100 mA | 4.8 kg⋅cm (67 oz⋅in), 2.0 A |
| Pololu item #: 4825 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 46.85:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 2248.86 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 130 RPM, 120 mA | 4.8 kg⋅cm (67 oz⋅in), 2.0 A |
| Pololu item #: 1586 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 74.83:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 80 RPM, 100 mA | 7.5 kg⋅cm (100 oz⋅in), 2.0 A |
| Pololu item #: 4826 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 74.83:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 3591.84 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 80 RPM, 120 mA | 7.5 kg⋅cm (100 oz⋅in), 2.0 A |
| Pololu item #: 1587 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 98.78:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 61 RPM, 100 mA | 9.1 kg⋅cm (130 oz⋅in), 2.0 A |
| Pololu item #: 4827 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 61 RPM, 120 mA | 9.1 kg⋅cm (130 oz⋅in), 2.0 A |
| Pololu item #: 1588 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 171.79:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 35 RPM, 100 mA | 14 kg⋅cm (190 oz⋅in), 2.0 A |
| Pololu item #: 4828 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 171.79:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 8245.92 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 35 RPM, 120 mA | 14 kg⋅cm (190 oz⋅in), 2.0 A |
| Pololu item #: 1589 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 226.76:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 27 RPM, 100 mA | 17 kg⋅cm (240 oz⋅in), 2.0 A |
| Pololu item #: 4829 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 226.76:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 10,884.47 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 27 RPM, 120 mA | 17 kg⋅cm (240 oz⋅in), 2.0 A |
| Pololu item #: 1590 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 377.93:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 16 RPM, 100 mA | 25 kg⋅cm (350 oz⋅in), 2.0 A |
| Pololu item #: 4830 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 377.93:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 18,140.79 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 16 RPM, 120 mA | 25 kg⋅cm (350 oz⋅in), 2.0 A |
| Pololu item #: 1591 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 498.87:1 metal spur gearbox. 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 with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 12 RPM, 100 mA | 31 kg⋅cm (430 oz⋅in), 2.0 A |
| Pololu item #: 4831 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 498.87:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 23,945.84 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 12 RPM, 120 mA | 31 kg⋅cm (430 oz⋅in), 2.0 A |
| Pololu item #: 4820 | |
| Brand: Pololu | |
| Status: Active and Preferred | |
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Free shipping in USA
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This is the motor and encoder portion of the low-power (LP), 6 V versions of our 25D mm metal gearmotors with 48 CPR encoders. It does not include a gearbox, but the pinion gear on the output shaft works with all of our 25D mm gearmotor gearboxes, so this can be used as a replacement motor or encoder for those gearboxes.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 6200 RPM, 120 mA | 0.15 kg⋅cm (2.1 oz⋅in), 2.0 A |
| Pololu item #: 2283 | |
| Brand: Pololu | |
| Status: Clearance | |
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This gearmotor has been replaced by a functionally identical version with a removable protective end cap over the encoder
Clearance: This is being replaced by a functionally identical version that has a removable protective end cap over the encoder.
This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 20.4:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 979.62 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 290 RPM, 250 mA | 2.4 kg⋅cm (33 oz⋅in), 2.4 A |
| Pololu item #: 2287 | |
| Brand: Pololu | |
| Status: Clearance | |
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Free shipping in USA
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Clearance: This is being replaced by a functionally identical version that has a removable protective end cap over the encoder.
This gearmotor consists of a low-power, 6 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 58 RPM, 250 mA | 9.4 kg⋅cm (130 oz⋅in), 2.4 A |
| Pololu item #: 2289 | |
| Brand: Pololu | |
| Status: Clearance | |
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Free shipping in USA
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Clearance: This is being replaced by a functionally identical version that has a removable protective end cap over the encoder.
This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 226.76:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 10,884.47 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 25 RPM, 250 mA | 16 kg⋅cm (220 oz⋅in), 2.4 A |
| Pololu item #: 2290 | |
| Brand: Pololu | |
| Status: Clearance | |
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Free shipping in USA
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Clearance: This is being replaced by a functionally identical version that has a removable protective end cap over the encoder.
This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 377.93:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 18,140.79 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 15 RPM, 250 mA | 22 kg⋅cm (300 oz⋅in), 2.4 A |
| Pololu item #: 2291 | |
| Brand: Pololu | |
| Status: Clearance | |
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Free shipping in USA
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Clearance: This is being replaced by a functionally identical version that has a removable protective end cap over the encoder.
This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 498.87:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 23,945.84 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.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 11 RPM, 250 mA | 30 kg⋅cm (400 oz⋅in), 2.4 A |
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