150:1 Metal Gearmotor 37Dx57L mm (Helical Pinion)
Prices incl. GST
Out of Stock.
- Product Code: Pololu-2829
- MPN: 2829
This gearmotor is a powerful brushed DC motor with 150:1 metal gearbox intended for operation at 12 V. The gearbox is composed mainly of spur gears, but it features helical gears for the first stage for reduced noise and improved efficiency. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft. This gearmotor is also available with an integrated encoder.
Key specifications:
| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 12 V | 67 RPM, 150 mA | 49 kg⋅cm (680 oz⋅in), 5.5 A |
These powerful brushed DC gearmotors are available in a variety of different gear ratios.
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 10 kg-cm (150 oz-in), and the recommended upper limit for instantaneous torque is 25 kg-cm (350 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.
These motors are intended for use at 12 V, though in general, these kinds of motors can run at voltages above and below the nominal voltage (they can begin rotating at voltages as low as 1 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.
The gearboxes are composed mainly of spur gears, but they feature helical gears for the first stage for reduced noise and improved efficiency:
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| 37D Gearmotor (Helical Pinion) with the gearbox removed showing the helical pinion gear and first mating gear. |
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Details for item #2829
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This gearmotor is a powerful brushed DC motor with 150:1 metal gearbox intended for operation at 12 V. These units have a 16 mm-long, 6 mm-diameter D-shaped output shaft.
Dimensions
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| Dimensions of the 37D mm metal gearmotor (without encoder). Units are mm over [inches]. |
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Dimensions
| Size: | 37D × 57L mm1 |
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| Shaft diameter: | 6 mm2 |
General specifications
| Gear ratio: | 150:1 |
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| No-load speed @ 12V: | 67 rpm |
| No-load current @ 12V: | 0.15 A |
| Stall current @ 12V: | 5.5 A3 |
| Stall torque @ 12V: | 49 kg·cm3 |
| Max output power @ 12V: | 6 W |
| No-load speed @ 6V: | 33 rpm4 |
| No-load current @ 6V: | 0.1 A4 |
| Stall current @ 6V: | 3.0 A5 |
| Stall torque @ 6V: | 30 kg·cm5 |
Performance at maximum efficiency
| Max efficiency @ 12V: | 44 % |
|---|---|
| Speed at max efficiency: | 58 rpm |
| Torque at max efficiency: | 6.5 kg·cm |
| Current at max efficiency: | 0.72 A |
| Output power at max efficiency: | 3.8 W |
General specifications
| Encoders?: | N |
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Notes:
1. Length measurement is from gearbox face plate to back of motor (it does not include the output shaft or motor terminals). See dimension diagram for details.
2. D shaft.
3. Stalling is likely to damage the gearmotor. Stall parameters come from a theoretical extrapolation of performance at loads far from stall. As the motor heats up, as happens as it approaches an actual stall, the stall torque and current decrease.
4. This motor will run at 6 V but is intended for operation at 12 V.
5. Stalling is likely to damage the gearmotor. Stall parameters come from a theoretical extrapolation of performance at loads far from stall. This motor will run at 6 V but is intended for operation at 12 V.