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50:1 Micro Metal Gearmotor HP

Product Code: Pololu #998

50:1 Micro Metal Gearmotor HP
50:1 Micro Metal Gearmotor HP

₹2,399.00
GST inclusive



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Availability: 2 In Stock


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Overview

These tiny brushed DC gearmotors are intended for use at 6 V, though in general, these kinds of motors can run at voltages above and below this nominal voltage, so they should comfortably operate in the 3 – 9 V range (rotation can start at voltages as low as 0.5 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor. The micro metal gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and offer a choice between three different motors: high-power (HP), medium-power (MP), and standard. With the exception of the 1000:1 gear ratio versions, all of the micro metal gearmotors have the same physical dimensions, so one version can be easily swapped for another if your design requirements change. Please see the micro metal gearmotor comparison table for detailed specifications of all our micro metal gearmotors. This dynamically-sortable table can help you find the gearmotor that offers the best blend of speed, torque, and current-draw for your particular application. A more basic comparison table is available below.

Some versions of the gearmotors are sold with an additional 1mm-diameter output shaft that protrudes from the rear of the motor. This 4.5mm-long rear shaft 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 micro metal gearmotors, to provide motor speed or position feedback.

Motor Type

Stall

Current

@ 6 V

No-Load

Speed

@ 6 V

Stall Torque

@ 6 V

 

Gearbox Shaft Only

Gearbox & Motor Shafts

high-power

(HP)

1600 mA

6000 RPM

2 oz-in

5:1 micro HP

 

 

 

3000 RPM

4 oz-in

10:1 micro HP

10:1 micro HP

 

 

1000 RPM

9 oz-in

30:1 micro HP

30:1 micro HP

 

 

625 RPM

15 oz-in

50:1 micro HP

50:1 micro HP

 

 

400 RPM

22 oz-in

75:1 micro HP

75:1 micro HP

 

 

320 RPM

30 oz-in

100:1 micro HP

100:1 micro HP

 

 

200 RPM

40 oz-in

150:1 micro HP

150:1 micro HP

 

 

140 RPM

50 oz-in

210:1 micro HP

 

 

 

120 RPM

60 oz-in

250:1 micro HP

 

 

 

100 RPM

70 oz-in

298:1 micro HP

298:1 micro HP

 

 

32 RPM

125 oz-in

1000:1 micro HP

1000:1 micro HP

medium-power

(MP)

700 mA

2200 RPM

3 oz-in

10:1 micro MP

10:1 micro MP

 

 

730 RPM

8 oz-in

30:1 micro MP

 

 

 

420 RPM

13 oz-in

50:1 micro MP

 

 

 

290 RPM

17 oz-in

75:1 micro MP

75:1 micro MP

 

 

220 RPM

19 oz-in

100:1 micro MP

100:1 micro MP

 

 

150 RPM

24 oz-in

150:1 micro MP

 

 

 

75 RPM

46 oz-in

298:1 micro MP

 

low-power

360 mA

2500 RPM

1 oz-in

5:1 micro

 

 

 

1300 RPM

2 oz-in

10:1 micro

 

 

 

440 RPM

4 oz-in

30:1 micro

30:1 micro

 

 

250 RPM

7 oz-in

50:1 micro

50:1 micro

 

 

170 RPM

9 oz-in

75:1 micro

 

 

 

120 RPM

12 oz-in

100:1 micro

100:1 micro

 

 

85 RPM

17 oz-in

150:1 micro

 

 

 

60 RPM

27 oz-in

210:1 micro

 

 

 

50 RPM

32 oz-in

250:1 micro

 

 

 

45 RPM

40 oz-in

298:1 micro

298:1 micro

 

 

14 RPM

70 oz-in

1000:1 micro

 


Note: Stalling gearmotors can greatly decrease their lifetimes, occasionally resulting in immediate damage to the gearbox. This is especially true for the higher gear ratios, such as the 298:1 and 1000:1 versions, which can generate enough torque to damage themselves. The stall torque values given for the two 1000:1 motors are theoretical, and we strongly recommend you avoid stalling them. Prolonged stalls (on the order of seconds) can result in thermal damage to the motor windings and brushes, especially for the versions that use high-power (HP) motors.

Details for item #998

Exact gear ratio: 32×33×35×3815×14×13×10≈51.45:1

Gearmotor Dimensions

Micro metal gearmotor dimensions (units in mm).

 

The gearbox on the 1000:1 and 1000:1 HP micro metal gearmotors is 12.5 mm long. All of the other micro metal gearmotors have 9mm-long gearboxes, as shown in the above dimension diagram.The gearbox has a long (0.365" or 9.27 mm), 3 mm-diameter D-shaped metal output shaft, and the brass faceplate has two mounting holes threaded for M1.6 screws (1.6 mm diameter, 0.35 mm thread pitch). The gearmotor weighs approximately 0.35 oz (10 g). Versions with the extended motor shaft have a 1mm diameter round shaft that protrudes 4.5 mm from the rear of the motor, between the two motor terminals; this is not pictured in the above dimension diagram. In terms of size, these gearmotors are very similar to Sanyo’s popular 12 mm NA4S DC gearmotors, and gearmotors with this form factor are often referred to as N20 motors.

Motor Accessories

 

Pololu wheel 32×7mm on a micro metal gearmotor.
Pololu wheel 42×19mm with micro metal gearmotor.
A pair of Pololu universal aluminum mounting hubs for 3 mm diameter shafts.

 

Black Pololu 70×8mm wheel on a Pololu micro metal gearmotor.
Black Pololu 90×10mm wheel on a Pololu micro metal gearmotor.
Pololu 30T track set with drive sprocket mounted on a micro metal gearmotor to the left; idler sprocket is on the right.
  • Mounting brackets: Our mounting bracket (also available in white) and extended mounting bracket are specifically designed to securely mount the gearmotor while enclosing the exposed gears. We recommend the extended mounting bracket for wheels with recessed hubs, such as the Pololu wheel 42×19mm. Our micro metal gearmotors will also work with our 15.5D mm metal gearmotor bracket pair.

 

Black micro metal gearmotor mounting bracket pair with included screws and nuts.
White micro metal gearmotor mounting bracket pair with included screws and nuts.
Pololu micro metal gearmotor bracket extended with micro metal gearmotor.

 

  • Quadrature encoders: We offer several quadrature encoders that work with our micro metal gearmotors.

 

Encoder for Pololu wheel 42×19mm with wheel, motor, and bracket.
Example of an installed micro metal gearmotor reflective optical encoder.
Magnetic Encoder Kit for Micro Metal Gearmotors assembled with ribbon cable wires.

 

 

Pololu qik 2s9v1 dual serial motor controller.
Baby Orangutan B-48/B-168/B-328.
DRV8835 dual motor driver carrier.

 

We also incorporate these motors into some of our products, including our 3pi robot and Zumo robot:

Pololu 3pi robot.
Assembled Zumo robot for Arduino with an Arduino Uno.

Selecting the Right Gearmotor

We offer a wide selection of metal gearmotors that offer different combinations of speed and torque. Our metal gearmotor comparison table can help you find the motor that best meets your project’s requirements.

 

Some of the Pololu metal gearmotors.
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