- Out-of-Stock
![50:1 Metal Gearmotor 37Dx70L mm with 64 CPR Encoder 50:1 Metal Gearmotor 37Dx70L mm with 64 CPR Encoder](https://kamami.pl/25806-large_default/pololu-2824-501-metal-gearmotor-37dx70l-mm-with-64-cpr-encoder.jpg)
Gearmotor is a powerful 12V brushed DC motor with a 50:1 metal gearbox and an integrated quadrature encoder
free shipping in Poland for all orders over 500 PLN
If your payment will be credited to our account by 11:00
Each consumer can return the purchased goods within 14 days
This powerful brushed DC gearmotor is available in six different gear ratios and features an integrated quadrature encoder with 64 counts per revolution (CPR) of the motor shaft. The motor and encoder portion is available by itself (no gearbox), and versions without the encoder are also available.
Gear Ratio | No-Load Speed @ 12 V | Stall Torque @ 12 V | Stall Current @ 12 V | ![]() With Encoder | ![]() Without Encoder |
---|---|---|---|---|---|
1:1 | 11,000 RPM | 5 oz-in | 5 A | motor without gearbox | |
19:1 | 500 RPM | 84 oz-in | 5 A | 37Dx68L mm | 37Dx52L mm |
30:1 | 350 RPM | 110 oz-in | 5 A | 37Dx68L mm | 37Dx52L mm |
50:1 | 200 RPM | 170 oz-in | 5 A | 37Dx70L mm | 37Dx54L mm |
70:1 | 150 RPM | 200 oz-in | 5 A | 37Dx70L mm | 37Dx54L mm |
100:1 | 100 RPM | 220 oz-in | 5 A | 37Dx73L mm | 37Dx57L mm |
131:1 | 80 RPM | 250 oz-in | 5 A | 37Dx73L mm | 37Dx57L mm |
Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. 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.
Exact gear ratio: 25×30×25×4010×10×15×10=50:125×30×25×4010×10×15×10=50:1
Warning: Do not screw too far into the mounting holes as the screws can hit the gears. We recommend screwing no further than 3mm (1/8") into the screw hole.
A two-channel Hall effect encoder is used to sense the rotation of a magnetic disk on a rear protrusion of the motor shaft. The quadrature encoder provides a resolution of 64 counts per revolution of the motor shaft when counting both edges of both channels. To compute the counts per revolution of the gearbox output, multiply the gear ratio by 64. The motor/encoder has six color-coded, 11″ (28 cm) leads terminated by a 1×6 female header with a 0.1″ pitch, as shown in the main product picture. This header works with standard 0.1″ male headers and our male jumper and precrimped wires. If this header is not convenient for your application, you can pull the crimped wires out of the header or cut the header off. The following table describes the wire functions:
Color | Function |
---|---|
Red | motor power (connects to one motor terminal) |
Black | motor power (connects to the other motor terminal) |
Green | encoder GND |
Blue | encoder Vcc (3.5 – 20 V) |
Yellow | encoder A output |
White | encoder B output |
The Hall sensor requires an input voltage, Vcc, between 3.5 and 20 V and draws a maximum of 10 mA. The A and B outputs are square waves from 0 V to Vcc approximately 90° out of phase. The frequency of the transitions tells you the speed of the motor, and the order of the transitions tells you the direction. The following oscilloscope capture shows the A and B (yellow and white) encoder outputs using a motor voltage of 12 V and a Hall sensor Vcc of 5 V.
By counting both the rising and falling edges of both the A and B outputs, it is possible to get 64 counts per revolution of the motor shaft. Using just a single edge of one channel results in 16 counts per revolution of the motor shaft, so the frequency of the A output in the above oscilloscope capture is 16 times the motor rotation frequency.
Size: | 37D x 70L mm1 |
---|---|
Weight: | 225 g |
Shaft diameter: | 6 mm |
Gear ratio: | 50:1 |
---|---|
Free-run speed @ 12V: | 200 rpm |
Free-run current @ 12V: | 300 mA |
Stall current @ 12V: | 5000 mA |
Stall torque @ 12V: | 170 oz·in |
Free-run speed @ 6V: | 100 rpm2 |
Free-run current @ 6V: | 250 mA2 |
Stall current @ 6V: | 2500 mA2 |
Stall torque @ 6V: | 85 oz·in2 |
Lead length: | 11 in |
Dual VNH3SP30 Motor Driver Carrier MD03A
A pair of aluminum brackets with holes for M3 screws for 37D mm gear motors. Pololu 1084
These 20 mm long aluminum adapters convert a 6 mm diameter shaft to a 12 mm hex shaft that is compatible with many common hobby RC wheels. Pololu 2686
No product available!
No product available!
Assembled radar using ultrasonic waves. AVT5550 C
No product available!
No product available!
No product available!
Orange Pi Win 1GB DDR3 RAM A64 Quad-core 64-Bit WiFi Mini PC
No product available!
ROSA3D filament made of high-quality PLA granules. 0.8 kg of filament with a diameter of 1.75 mm is wound on the spool. ROSA3D PLA Multicolor Silk Pacific
No product available!
No product available!
No product available!
No product available!
Alphanumeric display OLED 4x20, with built-in controller WS0010, communicating via 6800 interface, optionally 8080 or SPI. Winstar WEH002004AB
No product available!
No product available!
Assembled programmed event counter, equipped with the ability to remember the result, audible signaling
pass the impulse and the executive system with the relay. AVT1824 C
No product available!
DIGITAL MAGNETOPHONE WITH ISD17180 SYSTEM - A KIT FOR INDEPENDENT INSTALLATION
No product available!
No product available!
No product available!
Gearmotor is a powerful 12V brushed DC motor with a 50:1 metal gearbox and an integrated quadrature encoder