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zł122.44 tax excl.
73:1 Metal Gearmotor 20Dx42L mm
Free shipping
free shipping in Poland for all orders over 500 PLN
Same day shipping
If your payment will be credited to our account by 11:00
14 days for return
Each consumer can return the purchased goods within 14 days
73:1 Metal Gearmotor 20Dx42L mm
This 1.67" x 0.79" x 0.79" gearmotor is a brushed DC motor with 73:1 metal gearbox that has the power to deliver both speed and torque. These units have a 0.276"-long, 4 mm-diameter D-shaped output shaft. This gearmotor is a replacement for the now-discontinued 67:1 version.
Key specs at 6 V: 180 RPM and 250 mA free-run, 60 oz-in (4.3 kg-cm) and 3.3 A stall.
Gearmotor Dimensions
The 20D mm line of brushed DC gearmotors are available in three different gear ratios, all of which have the same dimensions except for the length of the gearbox. The gearmotor face plate has two mounting holes threaded for M2.5 screws, and you can use our custom-designed 20D mm metal gearmotor bracket (shown in the left picture below) to mount the gearmotor to your project via these mounting holes and the screws that come with the bracket.
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This gearmotor has an output shaft with a diameter of 4 m; the Pololu universal aluminum mounting hub for 4mm shafts can be used to mount our larger Pololu wheels (60mm-, 70mm-, 80mm-, and 90mm-diameter) or custom wheels and mechanisms to the gearmotor’s output shaft (see the right picture above). The gearbox’s output shaft also works directly with the 120mm-diameter Wild Thumper wheels, as shown below.
Dagu Wild Thumper wheel 120×60mm (metallic red) with Pololu 20D mm metal gearmotor. |
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Dimension Diagram
The picture below shows the dimensions (in mm) of the 20D mm line of gearmotors. The value of L
depends on the gear ratio of the gearbox: 29:1 is 15.7 mm, 73:1 is 17.2 mm, and 154:1 is 18.6 mm.
20D mm metal gearmotor dimensions (units in mm, L=18.5mm). |
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Note: These motors are intended for use at 6 V. 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. Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.
Note: The older, discontinued 25:1 and 67:1 versions of this gearmotor now had a different mounting hole spacing and work with a slightly different bracket. This bracket is not compatible with the 29:1, 73:1, and 154:1 20D mm gearmotors we currently offer.
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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People often buy this product together with:
Pololu 20D mm Metal Gearmotor Bracket Pair |
Pololu Universal Aluminum Mounting Hub for 4mm Shaft Pair, 4-40 Holes |
154:1 Metal Gearmotor 20Dx44L mm |
Other products in the same category (16)
Motor with 20 mm diameter and 44 mm length, 100:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 140 RPM speed and 5.4 kg*cm maximum torque. Pololu 3716
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Motor with 20 mm diameter and 44 mm length, 100:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 140 RPM speed and 5.4 kg*cm maximum torque. Pololu 3466
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Motor with 20 mm diameter and 46 mm length, 250:1 metal gear, 12 V operating voltage, 0.08 A to 1.6 A power consumption, 55 RPM speed and 14 kg*cm maximum torque. Pololu 3482
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Motor with 20 mm diameter and 46 mm length, 250:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 57 RPM speed and 12 kg*cm maximum torque. Pololu 3720
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Motor with 20 mm diameter and 44 mm length, 195:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 73 RPM speed and 9.4 kg*cm maximum torque. Pololu 3707
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Motor with 20 mm diameter and 46 mm length, 313:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 45 RPM speed and 13 kg*cm maximum torque. Pololu 3721
Motor with 20 mm diameter and 41 mm length, 25:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 570 RPM speed and 1.6 kg*cm maximum torque. Pololu 3450
No product available!
Motor with 20 mm diameter and 44 mm length, 125:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 110 RPM speed and 6.4 kg*cm maximum torque. Pololu 3705
No product available!
Motor with 20 mm diameter and 41 mm length, 25:1 metal gear, 12 V operating voltage, 0.08 A to 1.6 A power consumption, 550 RPM speed and 1.9 kg*cm maximum torque. Pololu 3474
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Motor with 20 mm diameter and 41 mm length, 31:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 450 RPM speed and 2 kg*cm maximum torque. Pololu 3701
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Motor with 20 mm diameter and 44 mm length, 156:1 metal gear, 12 V operating voltage, 0.08 A to 1.6 A power consumption, 89 RPM speed and 9 kg*cm maximum torque. Pololu 3492
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Motor with 20 mm diameter and 41 mm length, 31:1 metal gear, 12 V operating voltage, 0.08 A to 1.6 A power consumption, 450 RPM speed and 2.4 kg*cm maximum torque. Pololu 3487
Motor with 20 mm diameter and 41 mm length, 31:1 metal gear, 12 V operating voltage, 0.08 A to 1.6 A power consumption, 450 RPM speed and 2.4 kg*cm maximum torque. Pololu 3475
No product available!
Motor with 20 mm diameter and 46 mm length, 488:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 30 RPM speed and 21 kg*cm maximum torque. Pololu 3461
No product available!
Motor with 20 mm diameter and 41 mm length, 31:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 450 RPM speed and 2 kg*cm maximum torque. Pololu 3713
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Motor with 20 mm diameter and 44 mm length, 125:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 110 RPM speed and 6.4 kg*cm maximum torque. Pololu 3467
No product available!