This is the motor and encoder portion of our 37D x L mm metal gearmotors with 64 CPR encoders. It does not include a gearbox, but the pinion gear on the output shaft works with all of our helical pinion 37D mm gearmotor gearboxes, so this can be used as a replacement motor or encoder for those gearboxes. It is intended for use at 12 V, though the motor can begin rotating at voltages as low as 1 V.

Key Specifications:

voltage no-load performance stall extrapolation
12 V 10,000 RPM, 150 mA 0.5 kg⋅cm (7 oz⋅in), 5.5 A

This motor with integrated 64 CPR (counts per revolution) quadrature encoder is intended as a replacement motor and encoder for our 37D mm Metal Gearmotors with helical pinion.

 

 

The 2mm output shaft has a non-removable pinion gear that works with all of our “Helical Pinion” 37D mm gearmotor gearboxes. Note that we do not sell the 37D mm gearboxes separately, but if you have a gearmotor with a damaged motor or encoder (or if you want to effectively add an encoder to a version without an encoder), you can transfer the gearbox to this replacement motor.

 

The motor has a diameter of 34.5 mm (1.36 in) and a length of approximately 44 mm (1.7 in) from the top of the motor can to the bottom of the encoder. The top of the motor has six mounting holes evenly spaced around the outer edge threaded for M2.5 screws. These mounting holes form a regular hexagon, with the center of each hole located 13 mm from the center of the output shaft. The mounting holes have a depth of approximately 3.5 mm.

Gearmotor Options

You will typically want to combine this motor with a gearbox to give it a more appropriate combination of torque and speed (without a gearbox, it offers very high speed with very low torque). Our 37D mm line of metal gearmotors consist of this motor combined with different gearboxes. We do not carry the gearboxes by themselves, so unless you are looking at this as a replacement motor for a compatible gearbox you already have, we strongly recommend you consider getting a preassembled gearmotor with the gear ratio that best suits your project requirements.

 

Rated
Voltage
Stall
Current
No-Load
Current
Gear Ratio No-Load Speed
(RPM)
Extrapolated
Stall Torque
Max Power
(W)


Without Encoder


With Encoder
(kg ⋅ cm) (oz ⋅ in)
 
12 V 5.5 A 0.15 A 1:1 (no gearbox) 10,000 0.5 7 item #4750
19:1 540 8.5 120 12 item #4741 item #4751
30:1 330 14 190 12 item #4742 item #4752
50:1 200 21 290 10 item #4743 item #4753
70:1 150 27 380 10 item #4744 item #4754
100:1 100 34 470 8 item #4745 item #4755
131:1 76 45 630 6 item #4746 item #4756
150:1 67 49 680 6 item #2829 item #2828

 

This motor is intended for use at 12 V, though in general, these kinds of motors can run at voltages above and below the nominal voltage (this motor can begin rotating at voltages as low as 1 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

The black plastic end cap is easily removable if you need to access the encoder or want to slightly reduce the overall motor size, but there is a little bit of base plastic that will remain, as can be seen in the pictures below that show this motor combined with a gearbox:

 

Using the Encoder

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, 8″ (20 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
 

 

Package Includes :

1 x 64 CPR Metal Gearmotors

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Pololu 4750 / 4751 / 4752 / 4753 / 4755 / 4756 / 2828 Metal Gearmotors with 64 CPR Encoder (Helical Pinion)

  • Brand: Pololu
  • Product Code:Pololu-Metal-Gearmotors-64-CPR
  • Reward Points:45
  • Availability:In Stock
  • रo 4,473.00

  • Price in reward points:4473

  • 3 or more रo 4,437.00
  • 5 or more रo 4,327.00
  • 7 or more रo 4,292.00
  • 16 or more रo 4,257.00
  • 33 or more रo 4,224.00

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Tags: Pololu, Motor, 64 CPR, Encoder

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