MFA 4.5-15V Large 100:1 Single Ratio Planetary Gearbox
• Large motor with integral planetary (epicyclic) gearbox
• Great for heavy duty industrial use, hobbies and model applications
• Operating voltage between 4.5V and 15V
• Output ratio of 100:1
• Rotations per minute of up to 141
• Creates torque up to 4704gf.cmWhat ratio is this motor gearbox?
The motor with its integrated 100:1 planetary gearbox can get up to 4704gf.cm (gram-force cm) ,the equivalent of 0.461Nm, at maximum efficiency (12V) with a rotary speed of 141 rotations per minute. The motor runs off a DC power supply between 1.5 and 145 volts and reversing the polarity of the input with charge the direction the motor spins in. 77.1mm long (94.1 mm including shaft) with a diameter of 32mm and weighing 214g, this is a great motor for modelling or industrial applications.
Why use planetary motor gearbox?
Planetary gearboxes can be half the size of a conventional gearbox and more efficient, allowing smaller motors to be used for the same output. Planetary or epicyclic gearing involves one or more planet gears rotating around a sun gear and an outer ring. The planet gears are often mounted on a carrier that rotates relative to the sun gear.
The motor gearbox can be used in heavy duty industrial, hobby or model applications. It has a five pole motor with sintered bronze bearings, and sleeved bearings on the metal gearbox, allowing high torque transfers from the motor through the gearbox. 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. Powered by a DC power supply, the motor gearbox outputs to a 6mm shaft to connect to your project.
(Motor speeds may vary by ±12.5%)
| Manufacturer part code
| Supply voltage
|| DC 4.5 V - 15 V
| Speed at Max efficiency
|| 141 rpm @ 15 V
| Speed at other voltages
|| 112 rpm @ 12 V
|| 83 rpm @ 9 V
|| 55 rpm @ 6 V
|| 40 rpm @ 4.5
| Current at max efficiency
|| 0.99 A @ 12 V
| Output power at max efficiency
|| 7.98 W @ 12 V
|| 4704 gf.cm (0.461 Nm) @ 12 V
| Gearbox ratio
| Shaft diameter
|| 6 mm
|| 214 g
|| 32 mm x 32 mm x 77.1 mm (94.1 mm including shaft)
Why not tell us and our B2B sales team about your specific business needs and expectations?
At Maplin, we’re always looking for innovations and technology that can help your business work more efficiently.
With a dedicated business team and special services available only to business customers, you can access our electronics and technology solutions through our wide network of over 200 stores, our website with more than 20,000 products or though your personal account manager over the phone.
Working with organisations for nearly 30 years, Maplin offers a nationwide range of benefits to our business users:
- 30 day EOM credit account
- volume discount pricing
- online and in-store use of account
- one-to-one account management
- bespoke product sourcing and branding
- free delivery on orders over £10
- scheduled and forward ordering service
Contact our business team on
0333 400 9740 to open an account or discuss your business needs.
To receive your free copy of the Maplin Catalogue just call 0333 400 9740.