Web only

Find similar products here

MFA 12-24V Large Multi Ratio Motor Gearbox

Price match guranteePrice match guarantee

We can price match this item if found elsewhere. Call us on:

0333 400 9500

Quoting product code: SN36P


About this product


  • Pre-assembled motor and gearbox unit
  • Great for use in models, robots, R&D and education
  • Operating voltage between 12V and 24V

Product overview

• Pre-assembled motor and gearbox unit
• Great for use in models, robots, R&D and education
• Operating voltage between 12V and 24V
• Six different ratios to choose from
• Speeds of up to 6,300 rotations per minute
• Torque of up to 25gf.cm

What ratios can you choose from with this gearbox?

This multi ratio gearbox decreases the rotations per minute as the ratio increases allowing it to be used in a wide range of projects. The motor can be set to six different ratios - 4:1, 16:1, 64:1, 256:1, 1024:1 and 4096:1. The motor can produce torque of up to 25gf.cm at maximum efficiency and between three and 6,300 rotations per minute. Operating from a 12 to 24V power supply the motor can be run clockwise or anticlockwise by reversing the input polarity.

Why use a multi ratio gearbox?

With our range of multi ratio gearboxes you have versatility for whatever project you create from robots to clocks and lots in between. With multiple ratios and speeds per gearbox you can customise to fit your project exactly. Four mounting holes make it easy to mount and the gearbox comes pre-assembled so there is no hassle putting it together. A 3mm diameter shaft can be easily connected to the rest of your system. Extra gears and shafts are available, 2.9mm gears will be tight (fixed) and will rotate with the shaft whilst the 3.1mm gears will be loose and spin independently of the shaft.

(Motor speeds may vary by ±12.5%)

Compatible accessories
MFA Small 1.5-3V 12200 rpm motor <HA82D>
MFA Gear Multipack <WC78K>
MFA Spur Gears Multipack <>
MFA 2-3 mm Inline Coupling <WC69A>
MFA 3-3 mm Inline Coupling <WC67X>
MFA Worm Drive Kit <WC80B>
MFA Rack and Pinion Set <WC77J>
MFA Chain and Sprocket Set <WC79L>


Product code 927D/A (with RE-280/1 motor)
Supply voltage DC 12 V - 24 V
Speed at max efficiency 6300 rpm @ 12 V
Speed at 12 V 2100 rpm (4:1)
525 rpm (16:1)
131 rpm (64:1)
33 rpm (256:1)
8 rpm (1024:1)
2 rpm (4096:1)
Speed at 15 V 2625 rpm (4:1)
656 rpm (16:1)
164 rpm (64:1)
42 rpm (256:1)
10 rpm (1024:1)
2 rpm (4096:1)
Speed at 18 V 3150 rpm (4:1)
787 rpm (16:1)
196 rpm (64:1)
50 rpm (256:1)
12 rpm (1024:1)
3 rpm (4096:1)
Speed at 24 V 4199 rpm (4:1)
1050 rpm (16:1)
261 rpm (64:1)
67 rpm (256:1)
16 rpm (1024:1)
4 rpm (4096:1)
Current at max efficiency 0.30 A @ 12 V
Output power at max efficiency 1.62 W @ 12 V
Torque 25 g.cm (0.0025 Nm)
Gearbox ratio 4:1, 16:1, 64:1, 256:1, 1024:1, 4096:1
Shaft diameter 3 mm
Weight 76 g
Dimensions 53 mm x 30 mm x 54 mm (110 mm including shaft)

How many spins per minute will this produce on the lowest setting?

Asked by: Susan
2 rpm (4096:1)
Answered by: James
Date published: 2017-05-29

Can I use MFA - MFA 12-24V Large Multi Ratio Motor Gearbox to pump water through parametric peristaltic pump as this one http://www.thingiverse.com/thing:454702 ? width of hexagonal hole is 5.75mm. I.e. does it make circular motion? Do you have accessori

Asked by: Alkb
As much as we would love to be able to help here, we cannot offer design project advice or assistance, we are more than happy to locate products and support you with your purchases but we are not able to design entire circuits or projects for you. If you do have the design/circuit information detailing the value of the components needed we will be happy to locate these for you.
Answered by: Billy
Date published: 2016-12-10

Could this product be powered by a bicycle dynamo.
Asked by: Chris Mears
Not for long equal. Action opposite &nbsp;reaction power in power out.
Answered by: Chris
Date published: 2016-05-23

Are the Axles the same diameter as the ones in the kit listed below? MFA Geared Motor Kit Code: UZ15R

Asked by: ALex
Yes they are the same diameter.
Answered by: Dominic
Date published: 2016-05-22

What is the torque produced by this motor? is it more then the motor in this kit MFA Geared Motor Kit Code: UZ15R

Asked by: ALex
I have sent the data sheet to the email address provided.
Answered by: Dominic
Date published: 2015-07-17

hi can i use it as small generator to produced electrocity?
Asked by: joe
No sorry this product does not support that.
Answered by: JK
Date published: 2015-07-17

I want to buy one of your multi ratio motor gearboxes to use in a display but my power supply is 12 volt AC and your motors are DC. Somebody has told me that if I incorporate a full wave rectifier in the circuit this will solve the problem. Is this the case?
Asked by: Colin Clayton
Yes the product does support that.
Answered by: JK
Date published: 2015-07-17

Is any of your multi gear boxes able to be connected to a powerplug (240V) if it is connected via an AC/DC adapter? If, do you sell the relevant adapter?
Asked by: linda
Yes you will be able to use VN10L for this.
Answered by: JK
Date published: 2015-07-17
  • y_2018, m_1, d_23, h_12CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_11
  • loc_en_GB, sid_SN36P, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_maplin-en_gb