What is this small rotating part from a cell phone?

Question

What is this tiny rotating piece of hardware that I found inside my Samsung GE1202? It has E9C written in blue on it.

Mahendra Gunawardena · Accepted Answer · 2015-12-13T14:02:18.333

These types of motor configurations are used in the cellphone's vibrate/buzzer function. Here is a Youtube video demonstrating the vibrate function and two other references:

_{Click on image for a larger version of the image.}

These are called Eccentric Rotating Mass (ERM) vibration motors. This type of motor technology is also used in haptic feedback technology.

References:

score 6 · Answer 2 · edited Jul 22 '15 at 12:13

6

That is a micro vibrating motor to produce the "buzz" effect from your phone. I used much much larger vibrating motors, air driven, on the bottom of my Class 7 dump truck. Mounted under the bed, they would vibrate the bed, loosening the material so it would flow out cleanly.

edited Jul 22 '15 at 12:13

Chris Mueller

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answered Jul 21 '15 at 20:07

Van W. Cottom

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+1 for the dump truck vibrator - I'd never seen them before – Russell McMahon Jul 23 '15 at 11:58

What is this small rotating part from a cell phone?

2 Answers2