CQRobot 630:1 Metal DC Geared-Down Motor 37Dx75L mm 6V/12V, with 64 CPR Encoder and Bracket. 6V-3W-8RPM-70 kg.cm(973 oz.in),

4.7 4.7 out of 5 stars | 73 ratings

Price: 33.99

Last update: 01-19-2025


About this item

6V or 12V 630:1 Metal DC Geared-Down Motor 37Dx75L mm, with 64 CPR Encoder and Metal Mounting Bracket Kit, D-shaped Output Shaft 6mm Diameter and Long 16mm;
Max Power: @ 6V: 3 W, @ 12V: 6 W;
No-load Speed: @ 6V: 8 RPM, @ 12V: 17 RPM;
Stall Torque: @ 6V: 70 kg.cm (973 oz.in), @ 12V: 70 kg.cm (973 oz.in);
for Projects Such as Robots, Measuring Devices, Medical Equipment, Smart Balance Car, RC Car Model, Smart Home Appliance, Custom Servo, DIY Engine Toy. Compatible with Arduino Motherboards.

Product Description

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Instructions for use
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Customer Reviews
4.7 out of 5 stars
73
4.7 out of 5 stars
73
4.7 out of 5 stars
73
4.7 out of 5 stars
73
4.7 out of 5 stars
73
4.7 out of 5 stars
73
Price $33.99 $33.99 $33.99 $33.99 $33.99 $33.99
Rated Voltage 6/12V 6/12V 6/12V 6/12V 6/12V 6/12V
Stall Current 2.8/5.5A 2.8/5.5A 2.8/5.5A 2.8/5.5A 2.8/5.5A 2.8/5.5A
Gear Ratio 6.25:1 10:1 18.8:1 90:1 131.3:1 306:1
No-Load Speed (RPM) 800/1600 500/1000 265/530 60/120 38/76 17/35
Max Power (W) 7/12 7/12 7/12 5/10 3/6 3/6

Top reviews from the United States

  • Kevin
    5.0 out of 5 stars Works!
    Reviewed in the United States on August 11, 2023
    Used to roll up a coolaroo sunshade. Works nice!
  • S.
    5.0 out of 5 stars Works
    Reviewed in the United States on May 11, 2021
    The media could not be loaded.
    I tested this using the sketch in the Wiki listed in the product description. The first few declarations are all smashed together so you have to do a little copy and paste to get it to run properly, but it does do what it says. It will give you a running output from the motor encoder to the Arduino serial monitor. You can unplug the motor (as I did in the screen shot) and see the changes in the encoder output as the motor slows down after losing power. In order to actually do something with this, you'll need a motor controller board. There is plenty of online tutorials to guide you through that if you are new to this. Be certain to heed the warning about keeping mounting screws to 3mm of penetration.

    Lots of power in a small package. Works as advertised-recommended.

    If this review was of use to you, please consider clicking on "helpful". Thanks.
    Customer image
    S.
    5.0 out of 5 stars Works
    Reviewed in the United States on May 11, 2021
    I tested this using the sketch in the Wiki listed in the product description. The first few declarations are all smashed together so you have to do a little copy and paste to get it to run properly, but it does do what it says. It will give you a running output from the motor encoder to the Arduino serial monitor. You can unplug the motor (as I did in the screen shot) and see the changes in the encoder output as the motor slows down after losing power. In order to actually do something with this, you'll need a motor controller board. There is plenty of online tutorials to guide you through that if you are new to this. Be certain to heed the warning about keeping mounting screws to 3mm of penetration.

    Lots of power in a small package. Works as advertised-recommended.

    If this review was of use to you, please consider clicking on "helpful". Thanks.
    Images in this review
    Customer image
  • Starthru
    5.0 out of 5 stars Lots of torque!
    Reviewed in the United States on June 20, 2021
    I ordered this particular motor for a robotics project, because I needed a motor with more torque than my stepper motors could provide. CQRobot's wiki had the information on how to interface an Arduino to this motor, which made controlling it easy. Mounting flange and screws were provided.
    The motor does have a lot of inertia, and the wiki made it clear that the motor does not stop instantly when you remove power, but you can use your controller to watch the output of the encoder to see how much movement happens, and compensate within your controller software by either gradually reducing power or removing power a bit early, to get it to stop where you want it to.
    Hope this was helpful.
  • Sotto voce
    5.0 out of 5 stars 210:1 metal geared-down motor w/encoder and bracket
    Reviewed in the United States on May 18, 2021
    It's a hobby and purely experimental investment. That's what I told my wife after she opened it. I haven't discussed the ball screw.

    The electromotive sophistication at this price is stunning. There's more torque here than I expected at 12v. I'm thinking of applications. I have ideas. How much can it actually lift before stall? To be continued ...

    I've already got my money's worth in entertainment and quality thinking.
  • T.L.
    5.0 out of 5 stars Great motor
    Reviewed in the United States on September 1, 2021
    Like all CQRobot products this one is well documented. Head over to their excellent wiki, search for its SKU "CQR37D", and you can find all sorts of information about it and some sample code to use with arduino.

    It's a really nice motor with a lot of torque. It runs really well and it's a lot better documented than most motors I've picked up in the past. Like most CQRobot products I'd recommend it in a heartbeat -- it's a good brand with solid parts.
  • Dave Evers
    5.0 out of 5 stars Nice hobby gearmotor
    Reviewed in the United States on October 18, 2021
    I’m going to try to make a high-power RC servo with this unit, because it includes the motor, gearbox and encoder. I’m going to use an Arduino for the processing.

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