Micro-motor 100:1 LP - 3mm D shaft - metal gearbox

The best micro-motor to propel a robotic plateform (100:1 ratio)

This micro motor is usually called "micro metal gearmotor" on internent. This is a brushed motor designed to work at 6 volts DC.
In a general matter, you can use this motor with a lower or higher voltage. So, you can drive the motor with a voltage between  3v to 9v (the shaft start to rotate from 0.5v). Using a lower voltage is not always easy and using a higher voltage will reduce the lifetime of the the motor.

This is a "Low Power" version of the motor which is well suited for the project having a limited power supply.

The micro motor with metal gear box does exists with various gear ratio (so various speed and torque). You can have a gearbox with a ratio from 5:1 down to  1000:1 (1000 turns are needed on the motor shaft to have 1 turn on the gearbox output shaft).
A more important ratio means a lower speed on the gearbox output shaft but you also have a bigger torque ("turning force"). The torque is increasing in the opposite way of the speed (lowering in this case). Slower is the motor and higher torque he will have :-)

There is 3 kind of motor:

• HP: High Power - thoses High Power Motor have an important stall current rated at 1600mA @ 6v (the current is always at the maximum when the motor's shaft is blocked).
• MP: Medium Power - motor having a stall current of 700mA @ 6V.
• LP: Low Power - motor having a stall current of 360mA @ 6V.

More powerful is the motor will provide higher torque on the gearbox output shaft. In counterpart, more powerful motor also need a more powerful driver (driving electronic). By example, a L293 can drive a LP motor (maybe a MP motor if you do not stale it). If you want to drive a HP motor then a L298 would be a better choice (see the "accessories" section).

All the gearbox micro-motor have the same size, so you can easily replace a motor by another one when needed. Please, note that some motors also have a shaft available behind the motor (Diam. 1mm, 4~mm length). This second shaft can be used to place a rotary encoder... quite useful to know the motor speed or count the shaft rotation.

Technical details

• Size: 24 x 10 x 12 mm
• Weight: 9.70 gr
• Shaft diameter: 3mm (D Shaft)
• Gearbox ratio: 100:1
• Speed - no load (6v): 120 rpm (rotation per minute)
• Current - no load (6v): 40 mA
• Stall current (6v): 360 mA
• Stall torque (6v): 0.08 Nm (0.815 Kg-cm)

Content

For each order, you will receive a motor. The wheel, motor bracket and other demonstration items are not included (we just use them to demonstrate the motor usage.