This compact, inexpensive, low-current gearmotor (motor with a 120:1 reduction gearbox) is well suited for use in small robots. At 4.5 V, it has a free-run speed of 120 RPM and a stall torque of approximately 20 oz-in (however, the built-in safety clutch might start slipping before the stall torque is reached). The splined output shaft has a crest diameter of 2 mm and is offset from but parallel to the motor shaft. Though the product picture shows two gearmotors, this product is for a single motor.
Compare all products in Pololu Plastic Gearmotors.
Dimensions
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Size:
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36.5 x 20 x 27.4 mm1
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Weight:
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19 g
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Shaft diameter:
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2 mm2
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General specifications
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Shaft type:
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offset 2mm spline
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Typical operating voltage:
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4.5 V
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Gear ratio:
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120:1
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Free-run speed @ 4.5V:
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120 rpm
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Free-run current @ 4.5V:
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80 mA
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Stall current @ 4.5V:
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800 mA
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Stall torque @ 4.5V:
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20 oz·in3
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Notes:
- 1
- See drawing for detailed dimensions.
- 2
- Measurement is diameter of spline crest.
- 3
- Note: the gearbox's built-in clutch might start slipping at a lower torque.
