Cheap encoders

[Mark McLeod]

If they turn out to use ball bearings then I'd like them
I'm not one for sleeve bearings except in low rpm uses.

[billbo911]

Originally Posted by Mark McLeod

If they turn out to use ball bearings then I'd like them
I'm not one for sleeve bearings except in low rpm uses.

I'm with you 100% on that.

I'll let you know exactly what they are when mine arrive. I ordered 5 this morning.

I have plenty of projects that can benefit from these if they are even barely decent.

[Ivan Helmrich]

Here's a link to a catalog page. Specs are at the bottom of the page. 91 series looks to have sealed sleeve bearings rated at 300 RPM. Still a great deal for lower speed applications.

http://www.electro-nc.com/oak/p0104.pdf

[Qbranch]

My conscience would like to make a statement: Rotary encoders, pretty much the most necessary sensor in a high performance motion control system, are probably not a place you want to cut cash in your robot.

I might be wrong in this case... but if I were building a machine of some kind, I'd probably try to save money elsewhere on a less critical part... maybe buying cheaper limit switches or something else that doesn't need to be as precise... or maybe buying looser tolerance bearings if you don't need super precise shaft positioning...

That's my 0.55 Rubles.

-q

[billbo911]

Originally Posted by Qbranch

My conscience would like to make a statement: Rotary encoders, pretty much the most necessary sensor in a high performance motion control system, are probably not a place you want to cut cash in your robot.

I might be wrong in this case... but if I were building a machine of some kind, I'd probably try to save money elsewhere on a less critical part... maybe buying cheaper limit switches or something else that doesn't need to be as precise... or maybe buying looser tolerance bearings if you don't need super precise shaft positioning...

That's my 0.55 Rubles.

-q

It is a good thing these will mostly be used in my own Vex robots, or maybe a motorized recliner operated by my lil' Arduino.

I will also use them to help my programmers get familiar with encoders and their usefulness, as you mentioned. But, you are correct, when it comes to the competition robot, reliability is paramount. (Oooo, there's that word again )