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Özellikler

Yüksek güçlü, fırçalı bir redüktörlü  DC motor olan bu ürün altı farklı dişli oranı ile sunulmaktadır. Ürünün üzerinde 64 CPR quadral encoder bulunmaktadır. Motor ve enkoder kısmı kendisi ( hiçbir şanzıman) tarafından kullanılabilir ve enkodersiz versiyonları da mevcuttur. Ürünün redüktörsüz ve enkodersiz versiyonları da bulunmaktadır.

 

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.

These motors are intended for use at 12 V, though in general, these kinds of motors can run at voltages above and below the nominal voltage (they 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.

These gearmotors are functionally identical to the previous versions we carried without end caps (they use the same motor, encoder, and gearboxes). The black plastic end cap is easily removable if you need to access the encoder or want to slightly reduce the overall gearmotor size, but there is a little bit of base plastic that will remain, as shown in the pictures below:

Details for item #2822

Exact gear ratio:  25×30×3010×10×12=18.75:1

Dimensions

 

Dimensions of the 37D mm metal gearmotor with 64 CPR encoder. Units are mm over [inches].

 

This diagram is also available as a downloadable PDF (277k pdf).

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.

 

37D mm metal gearmotor with 64 CPR encoder (with end cap removed).

 

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, 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 andprecrimped 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:

 

Encoder A and B outputs for 37D mm metal gearmotor with 64 CPR encoder (motor running at 12 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.

Gearmotor accessories

The face plate has six mounting holes evenly spaced around the outer edge threaded for M3 screws. These mounting holes form a regular hexagon and the centers of neighboring holes are 15.5 mm apart. We carry two brackets for these gearmotors: a stamped aluminum L-bracket (sold in pairs) and a sturdier, tombstone-style machined aluminum bracket (sold individually):

Gearmotor with bracket and hub.
Pololu machined aluminum bracket for 37D mm metal gearmotors mounting a motor to a clear piece of acrylic.

The 6 mm diameter gearbox output shaft works with the Pololu universal aluminum mounting hub for 6mm shafts, which can be used to mount our larger Pololu wheels (80mm- and 90mm-diameter) or custom wheels and mechanisms to the gearmotor’s output shaft as shown in the left picture below. Alternatively, you could use our 6mm scooter wheel adapter to mount many common scooter, skateboard, and inline skate wheels to the gearmotor’s output shaft as shown in the right picture below:

37D mm metal gearmotor with 64 CPR encoder connected to a Pololu 90×10mm wheel with a Pololu universal mounting hub.
A 37D mm gearmotor connected to a scooter wheel by the 6 mm scooter wheel adapter.

Finally, our 12mm hex wheel adapter for 6mm shaft (also available in an extended version) lets you use these motors with many common hobby RC wheels, including Dagu Wild Thumper Wheels:

 

12mm Hex Wheel Adapter for 6mm Shaft connecting a Wild Thumper

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19 : 64 CPR Encoder ile 1 Metal Redüktörlü Motor 37Dx68L mm - pololu - #2823

Stok Kodu : 2822
132,32 TL +KDV
156,14 TL KDV Dahil
Paylaş:
  • Ürün Özellikleri
  • Ödeme Seçenekleri
  • Yorumlar (0)
  • Resimler
  • Özellikler

    Yüksek güçlü, fırçalı bir redüktörlü  DC motor olan bu ürün altı farklı dişli oranı ile sunulmaktadır. Ürünün üzerinde 64 CPR quadral encoder bulunmaktadır. Motor ve enkoder kısmı kendisi ( hiçbir şanzıman) tarafından kullanılabilir ve enkodersiz versiyonları da mevcuttur. Ürünün redüktörsüz ve enkodersiz versiyonları da bulunmaktadır.

     

    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.

    These motors are intended for use at 12 V, though in general, these kinds of motors can run at voltages above and below the nominal voltage (they 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.

    These gearmotors are functionally identical to the previous versions we carried without end caps (they use the same motor, encoder, and gearboxes). The black plastic end cap is easily removable if you need to access the encoder or want to slightly reduce the overall gearmotor size, but there is a little bit of base plastic that will remain, as shown in the pictures below:

    Details for item #2822

    Exact gear ratio:  25×30×3010×10×12=18.75:1

    Dimensions

     

    Dimensions of the 37D mm metal gearmotor with 64 CPR encoder. Units are mm over [inches].

     

    This diagram is also available as a downloadable PDF (277k pdf).

    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.

     

    37D mm metal gearmotor with 64 CPR encoder (with end cap removed).

     

    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, 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 andprecrimped 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:

     

    Encoder A and B outputs for 37D mm metal gearmotor with 64 CPR encoder (motor running at 12 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.

    Gearmotor accessories

    The face plate has six mounting holes evenly spaced around the outer edge threaded for M3 screws. These mounting holes form a regular hexagon and the centers of neighboring holes are 15.5 mm apart. We carry two brackets for these gearmotors: a stamped aluminum L-bracket (sold in pairs) and a sturdier, tombstone-style machined aluminum bracket (sold individually):

    Gearmotor with bracket and hub.
    Pololu machined aluminum bracket for 37D mm metal gearmotors mounting a motor to a clear piece of acrylic.

    The 6 mm diameter gearbox output shaft works with the Pololu universal aluminum mounting hub for 6mm shafts, which can be used to mount our larger Pololu wheels (80mm- and 90mm-diameter) or custom wheels and mechanisms to the gearmotor’s output shaft as shown in the left picture below. Alternatively, you could use our 6mm scooter wheel adapter to mount many common scooter, skateboard, and inline skate wheels to the gearmotor’s output shaft as shown in the right picture below:

    37D mm metal gearmotor with 64 CPR encoder connected to a Pololu 90×10mm wheel with a Pololu universal mounting hub.
    A 37D mm gearmotor connected to a scooter wheel by the 6 mm scooter wheel adapter.

    Finally, our 12mm hex wheel adapter for 6mm shaft (also available in an extended version) lets you use these motors with many common hobby RC wheels, including Dagu Wild Thumper Wheels:

     

    12mm Hex Wheel Adapter for 6mm Shaft connecting a Wild Thumper

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