47:1 Metal Gearmotor 25Dx52L mm HP 6V View larger

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47:1 Metal Gearmotor 25Dx52L mm HP 6V

0104110000070128

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This gearmotor consists of a high-power, 6 V brushed DC motor combined with a 46.85:1 metal spur gearbox. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. This gearmotor is also available with an integrated encoder.


Key specifications:

voltage no-load performance stall extrapolation
6V 200 RPM, 550 mA 8.5 kg⋅cm (115 oz⋅in), 6.5 A

See Description for more details about the product.

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These cylindrical brushed DC gearmotors are available in a wide range of gear ratios and with five different motors (two power levels of 6 V motors and three power levels of 12 V motors). The gearmotors all have the same 25 mm diameter case and 4 mm diameter gearbox output shaft, so it is generally easy to swap one version for another if your design requirements change (though the length of the gearbox tends to increase with the gear ratio). Each version is also optionally available with an integrated 48 CPR quadrature encoder..

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. For these gearboxes, the recommended upper limit for instantaneous torque is 15 kg-cm (200 oz-in); we strongly advise keeping applied loads well under this limit. Stalls can also result in rapid (potentially on the order of a second) thermal damage to the motor windings and brushes, especially for the versions that use high-power (HP) motors; a general recommendation for brushed DC motor operation is 25% or less of the stall current.


In general, these kinds of motors can run at voltages above and below their nominal voltages (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.


Dimensions


The diagram below shows the dimensions of the 25D mm line of gearmotors (units are mm over [inches]).


a.jpg


Dimensions of the Pololu 25D mm metal gearmotors without encoders. Units are mm over [inches].

Warning: Do not screw too far into the mounting holes as the screws can hit the gears. We recommend screwing no further than 6 mm (0.24″) into the screw hole.


Gearmotor accessories


The face plate has two mounting holes threaded for M3 screws. You can use our custom-designed 25D mm metal gearmotor bracket (shown in the 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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Pololu 25D mm metal gearmotor bracket pair.


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Pololu 25D mm gearmotor with bracket.


The 4 mm diameter gearbox output shaft works with Pololu multi-hub wheels as shown in the left picture below. That shaft also works with the Pololu universal aluminum mounting hub for 4mm shafts, which 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 as shown in the right picture below.


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Pololu 80×10mm multi-hub wheel on a Pololu 25D mm metal gearmotor with encoder.


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Pololu 60×8mm wheel with 4mm hub adapter on Pololu 25D mm metal gearmotor with encoder.


Alternatively, you could use our 4mm scooter wheel adapter to mount many common scooter, skateboard, and inline skate wheels to the gearmotor’s output shaft as shown in the left picture below. For a general-purpose hex adapter, consider our 12mm hex wheel adapter, which lets you use this motor with many common hobby RC wheels as shown in the right picture below.


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A 25D mm gearmotor with encoder connected to a scooter wheel by the 4mm scooter wheel adapter.


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12mm hex wheel adapter for 4mm shaft on a 25D mm metal gearmotor with encoder.


These are the same type of motors used in the Wild Thumper all-terrain chassis, so the gearbox’s output shaft also works directly with the hex adapters included with the 120mm-diameter Wild Thumper wheels as shown in the image below:


i.jpg


Dagu Wild Thumper wheel 120×60mm (metallic red) and Pololu 25D mm metal gearmotor with encoder.


We have a number of motor drivers and motor controllers that work with these 25D mm metal gearmotors. For the LP and MP versions, we recommend our TB9051FTG-based drivers, for which we have a basic single carrier, a dual-channel shield for Arduino, and a dual-channel expansion board for Raspberry Pi. For the HP versions, we recommend our VNH5019-based motor drivers (available as single and dual carriers), though these can also be a good choice for the lower-power motors.


j.jpg


TB9051FTG Single Motor Driver Carrier.


k.jpg


Pololu dual VNH5019 motor driver shield for Arduino.


If you are looking for higher-level control interfaces, such as USB, RC, analog voltages, I²C, or TTL serial, consider our Simple Motor Controllers, Jrk motor controllers, or RoboClaw motor controllers; these controllers are available in various power levels, and the appropriate one depends on the particular version of 25D mm motor you have (we generally recommend a motor controller that can handle continuous currents above the stall current of your motor).


L.jpg


High-Power Simple Motor Controller G2 18v15.


m.jpg


Jrk G2 21v3 USB Motor Controller with Feedback.


n.jpg


RoboClaw 2×7A Motor Controller (V5B) in its included case.


We have an assortment of Hall effect-based current sensors to choose from for those who need to monitor motor current:


o.jpg


ACS711EX current sensor carrier -15.5A to +15.5A.


p.jpg


ACS714 current sensor carrier -5A to +5A.


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.


07.jpg


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47:1 Metal Gearmotor 25Dx52L mm HP 6V

47:1 Metal Gearmotor 25Dx52L mm HP 6V

This gearmotor consists of a high-power, 6 V brushed DC motor combined with a 46.85:1 metal spur gearbox. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. This gearmotor is also available with an integrated encoder.


Key specifications:

voltage no-load performance stall extrapolation
6V 200 RPM, 550 mA 8.5 kg⋅cm (115 oz⋅in), 6.5 A

See Description for more details about the product.

Don't delay, buy today. Add to cart now!

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