Removing eccentric weights from pager motors

Removing eccentric weights from pager motors

Over at the Robot Room, Dave Cook has a brief piece on removing the eccentric weight from pager/cellphone/force-feedback joysticks motors. It really is basically a firm pull with a pair of locking pliers, but you need to do it correctly so as not to bend the drive shaft or mar the motor casing.

Tiny Motor — Removing the weight from tiny vibrating motor

8 thoughts on “Removing eccentric weights from pager motors

  1. mateotravieso says:

    Would a dremel be less risky than yarding off the weight with vice grips?

    1. mateotravieso says:

      I guess the article says why. Duh me.

  2. Jack Buffington says:

    A few years ago I had a project where I had to use very tiny motors like this. I tried this method but found that, at least with the motors that I was using, it would damage the brushes because doing this would pull the motor core farther than it was meant to go under normal use. The method that I ended up using was to clamp the weight in the corner of a vise and then use a very short section of piano wire to push the motor shaft out of the weight.

  3. Hank says:

    Looks like a job for a pinion puller to me.

Comments are closed.

Discuss this article with the rest of the community on our Discord server!

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at

View more articles by Gareth Branwyn


Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).