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MFA 4.5-15V Large 3000:1 Single Ratio Motor Gearbox

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Quoting product code: N01BQ


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About this product


  • Large brushed motor with integral gearbox
  • Great for heavy duty industrial, hobby, modelling, R&D, and education use
  • Operating voltage between 4.5V and 15V

Product overview

• Large brushed motor with integral gearbox
• Great for heavy duty industrial, hobby, modelling, R&D, and education use
• Operating voltage between 4.5V and 15V
• Gearbox ratio of 3000:1
• Rotations per minute of up to 6
• Creates torque up to 6000 gf.cm
• Compact size to even fit some medium sized projects

What size is this motor gearbox?

At 84mm (109mm including shaft) x 47mm x 39mm this motor has an integrated gearbox and a central 5.98mm output shaft. The 3000:1 motor gearbox can produce a high torque of 6000gf.cm (gram-force cm) at 12V with a rotation speed of 6rpm.the direction of ration can be changed by reversing the input polarity. The motor has an attached 1mm thick plated steel mounting bracket to mount it easily to your project.

What can I use this motor gearbox for?

This is a powerful motor with an integral gearbox suitable for heavy-duty industrial or model applications. The motor is capable of high torque transfer through the gears. The built-in gearbox can increase your turning power (torque) at a reduced rotations per minute from the motor. The optimum ratio for this will depend on your project. Solidly constructed from steel and brass with sintered bronze bearings, a high quality three pole motor and a 5.98mm diameter central output shaft. This motor gearbox is ideal for DC 4.5-15V powered mechanisms with a wide range of application from industrial uses to modelling or hobbies or to demonstrate mechanical principles for educational kits.

Motor available separately
MFA MFA Medium 4.5-15V 12380 rpm Motor <HA89W>

(Motor speeds may vary by ±12.5%)


Manufacturer part code 919D30001
Supply voltage DC 4.5 V - 15 V
Speed at Max efficiency 6 rpm @ 15 V
Speed at other voltages 3 rpm @ 9 V
3 rpm @ 9 V
2 rpm @ 6 V
1.5 rpm @ 4.5 V
Current at max efficiency 2.75 A @ 12 V
Output power at max efficiency 19.35 W @ 12 V
Torque 6000 gf.cm (0.588 Nm) @ 12 V
Gearbox ratio 3000:1
Shaft diameter 5.98 mm
Weight 262 g
Dimensions 39 mm x 47 mm x 84 mm (109 mm including shaft)

do you have a suitable power supply for this? I just want a motor that can be plugged into a UK mains power socket...

Asked by: rich
Unfortunately we do not stock such an item. Apologies for any inconvenience.
Answered by: Dale
Date published: 2018-02-15

I'm not all that familiar with torgue, how heavy object (in kg) can this motor move, and what are the most powerful motors in this size that you have

Asked by: Just
This will depend on gearing but this is not something we can help with, you would need to look this up online.
Answered by: Dominic
Date published: 2017-04-21

Hi there, Could you tell me how the gear ratio is adjusted please?

Asked by: Anonymous
The ratio is fixed, you can alter the speed of rotation by applying different voltages. a table of applicable rotational speeds can be found on the datasheet on the product listing. link here https://maplindownloads.s3-eu-west-1.amazonaws.com/N01BQ-7731.pdf
Answered by: Les
Date published: 2016-06-22

Can I run this motor off a single 9v battery?

Asked by: SimonL
I am pleased to advise the product you mentioned will do exactly what you require.
Answered by: Brad
Date published: 2015-12-15

Can you advise the dimensions of this motor, including overall length, diameter, drive shaft length and fixing hole diameter and spacing, also country of manufacture. &nbsp; Thank you

Asked by: g8awb
A data sheet has been sent to the email address provided.
Answered by: Dominic
Date published: 2015-07-17

The overview indicates the the torque over the speed range is constant, is this correct?

Asked by: g8awb
Yes that's correct.
Answered by: Dominic
Date published: 2015-07-17

I want to use a DC motor at high torque and between 15 and 5 rpm to stir a liquid (thin porridge consistency)&nbsp;and run it from the mains. Would this motor run at an RPM within my range and do maplin sell a suitable ac/dc transformer to run from mains?

Asked by: homebrewcallum
it is important to note that as a retail only company we are unable to assist with any design projects or queries, or advise on specific products that may be required for your purpose.
Answered by: Dominic
Date published: 2017-11-30

what are the dimensions of this motor / gearbox - particularly total length, width and fixing hole positions

Asked by: none
I have sent you the datasheet covering this and the rest of the range by email, if anyone else would like this please email us Technical@maplin.co.uk
Answered by: Russell
Date published: 2015-07-17
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