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Pololu 136:1 Sub-Micro Plastic Planetary Gearmotor 6Dx19L mm

0104110000027344

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This tiny, cylindrical gearmotor consists of a coreless brushed DC motor and a 136:1 plastic planetary gearbox. The entire assembly has a diameter of just 6 mm (0.24") and an extremely light weight of 1.25 g (0.044 oz), making it a great actuator for miniature robots and very small mechanisms.

Key specs at 6 V: 500 RPM and 45 mA free-run, 8 oz-in (0.6 kg-cm) and 400 mA stall.


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Overview

These tiny brushed DC gearmotors have a diameter of just 6 mm and weigh just over a gram, which makes them great actuators for miniature robots and very small mechanisms. They consist of a coreless motor fastened to a planetary gearbox by a small clip. The gears are made from liquid crystal polymers (LCPs), and gearbox’s nylon output shaft is compatible with 14 mm wheels. Three gear ratios are available:



26:1, which has a free run speed of 2500 RPM and stall torque of 1.5 oz-in (110 g-cm) at 6 V

136:1, which has a free run speed of 500 RPM and stall torque of 8 oz-in (550 g-cm) at 6 V

700:1, which has a free run speed of 90 RPM and stall torque of 12 oz-in (900 g-cm) at 6 V



Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. For these gearboxes, the recommended upper limit for instantaneous torque is 3.5 oz-in (250 g-cm); we strongly advise keeping applied loads well under this limit. 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.




The intended nominal operating voltage for these motors is 3 V to 6 V, though in general, these kinds of motors can be used at voltages outside this range (rotation typically starts between 0.2 V and 0.3 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor. When operating at 3 V, the free-run speed, stall torque, and stall current will all be approximately half of what they are at 6 V as these specifications scale roughly linearly with voltage.


26:1 sub-micro plastic planetary gearmotor next to a micro metal gearmotor and a LEGO Minifigure for size reference.


Sub-micro plastic planetary gearmotors. Gear ratios from top to bottom: 700:1, 136:1, 26:1.


Gearmotor dimensions

The following diagram shows the micro plastic gearmotor dimensions in mm. The planetary gearbox has a D-shaped plastic output shaft, which is 2 mm in diameter with a section that is flattened by 0.5 mm. The "D" portion of the shaft is 2.5 mm long. The motor measures 6 mm in diameter and 9.3 mm in length, and the gearbox length, labeled "L" in the diagram below, depends on the gear ratio.


Dimensions of the Sub-Micro Plastic Planetary Gearmotors. Units are mm over [inches].


This dimension diagram is also available as a downloadable PDF (92k pdf).


Specifications

Dimensions

Size: 6D x 19L mm
Weight: 1.25 g
Shaft diameter: 2 mm


General specifications

Gear ratio: 136:1
No-load speed @ 6V: 500 rpm
No-load current @ 6V: 45 mA
Stall current @ 6V: 400 mA
Stall torque @ 6V: 8 oz·in


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Pololu 136:1 Sub-Micro Plastic Planetary Gearmotor 6Dx19L mm

Pololu 136:1 Sub-Micro Plastic Planetary Gearmotor 6Dx19L mm

This tiny, cylindrical gearmotor consists of a coreless brushed DC motor and a 136:1 plastic planetary gearbox. The entire assembly has a diameter of just 6 mm (0.24") and an extremely light weight of 1.25 g (0.044 oz), making it a great actuator for miniature robots and very small mechanisms.

Key specs at 6 V: 500 RPM and 45 mA free-run, 8 oz-in (0.6 kg-cm) and 400 mA stall.


See description for more details about the product.

Add to cart now!

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