I guess I received an implicit answer to my question.
Shortly after I posted this comment the name of the item changed from "Vibration Motor - LRA ROB-08449" to "Vibration Motor ROB-08449". I will continue my search for an LRA motor elsewhere. -*************** - I need an LRA (Linear Resonant Actuator) coin cell vibrating motor for a project. The name of this item indicates it is an LRA, "Vibration Motor - LRA ROB-08449" but the item description and the Datasheet indicate that it is actually an ERM (Eccentric Rotating Mass) coin cell vibrating motor. Does anyone know for sure which type it is? I need the vibration to be in the Z-axis. ERM's have vibration in the X-axis and Y-axis but nothing in Z.
Plus an ERM type motor runs with a DC voltage. An LRA type motor requires an AC voltage tuned to the resonant frequency of the motor.
An LRA type motor does not have a 'commutator' or '4 magnetic poles'. LRAs use a voice coil design with a single rare-earth magnet.
LRA coin cell vibrating motors do typically cost a bit more than the ERM version so the relatively high price that Sparkfun is asking makes me think this might be an LRA (in which case the description and datasheet need to be updated).

What material is the casing made from? I can't find it in the product sheet. I assume either aluminum or steel, but can't tell which.

If anyone wants to see a good project done with this circuit, see How to Build a Vibration Motor Circuit. This shows you how to connect it directly to a voltage source to power it directly and how to integrate it with an arduino to allow the motor to vibrate every minute.

I'm just curious why the similar part from Adafruit is so much less expensive. 1.95 vs 4.95.

if im making a vibrobot that requires other components to run at 6 volts, can i just use PWM to power these without burning them out?

Can these be run continuously? How long might it last?

Please consider updating the images to show the front and back along with a scale.

Good motor, but I found that this coin motor which has same size and specs has about a 25% longer lifetime.
http://www.vibration-motor.com/products/pancake-vibrator-motors/coin-motor-C1034B018F.html

Does anyone know of a good PCB mount for these? After reading a Fitbit Flex teardown I felt compelled to find one. Here is an image showing such a mount from ifixit.com's Fitbit Flex teardown step 8.

Hi, This page is very informative and fun to read on Vibration Motor. I am a huge follower of the things blogged about. I also love reading the comments, but it seems like a great deal of readers need to stay on topic to try and add something to the original topic such as for vibration testing you can try http://www.datasysttest.com/vibration-testing.php it. I would also encourage all of you to bookmark this page to your most used service to help get the word out. Thanks

Does anyone know if these will work for bristle bots?

Are these comparable to the motors in cell phones?

For the curious - these motors are great but they have very tiny, flexible leads that don't work well with a regular breadboard. I needed to solder solid-core jumper wires onto them to make a bunch of these robots, and wanted to use heat-shrink tubing to cover up the solder connections. I don't have a heat gun, and using a hair dryer with just one of these tiny motors is a pain (they're so light that they blow around) - let alone two dozen of them.

Solution? Stick them in the oven! I checked with tech support and they said a different carrier had a data sheet with a maximum recommended storage temp of 70C/150F. The problem - the temp for the heat shrink tubing is 212F. The question - will that destroy the motor? Answer - as far as I found, no. I stuck one in the oven with heat shrink tubing at 200F, then got impatient because the tubing didn't seem to be shrinking enough and tried 215F. Checked the motor afterwards and it still worked fine. Then I got really brave and tried 250F to shrink the tubing a little more, and the motor STILL worked. Of course the caveat is that I didn't do a long-term test, so I'm not sure if this will affect the lifetime of the motor, but at least it didn't destroy it right away.

can i connect that to a frequency generator and make it vibrate in range of 300hz to 5.0 khz ?

you can also use the MAX1749 to drive it from a source of up to 6.5v input. The output is adjustable with 2 resistors so you can easily provide 3v from sources greater than 4v.
I plan on using a PNP transistor with 3.7v Li battery and count on the 0.7 voltage drop of the CE junction (like driving a relay). can also PWM the output to get less power to the motor.

Bought with a Battery Holder 2xAA with Cover and Switch. Wired it directly and it gives off quite a bit of vibration. There is a noticeable difference between 2.4v (two rechargeable AA I had) and 3v (2 Duracell standard AA), so consider that you get more out of this little motor when you are higher in it's voltage range.

What is the best way to vary the intensity of the vibrations?

Do i need to have software for it or can i just put a battery to it?????

Weak! As far as vib motors go, its small and cute. The factor is nice. However, the vib itself is weak. On its own its mildly amusing. Attach it to anything (like 2 'AAA's) or put a small case around it and its hardly noticeable in your pocket.

From my experience with it, depends on your current supply. if you does not worry about power, it can draw around 50-70mA max. I am very impressed about its vibration intensity at this current. definitely noticeable in my hand or against a hard surface.

How strong of a vibration does this make?

whats the best way to connect this, i m talking about the wiring, I need to be able to sit on these, one end will all get connected to a bread board and I will be using long wires.

Can I use this with the LilyPad without any additional hardware?
The LyliPad version of this motor cost $10 more. Thanks.