A Project Quest

[Andre]

Regardless of what you choose, I would think any of the above designs could work well if planned out and tweaked properly. Linear bearings have really opened up possibilities for the home shop user to build the machines they would need.

 

[T Bredehoft]

Should you consider linear bearings, they are available sealed, both end and side. I've not seen specs on how well sealed they are, however.

 

[Bill Gruby]

Transfer Bearings from a conveyer is also an option.

"Bill and Mark"

 

[Andre]

Out of curiosity, what kind of precision are you looking for out of the grinder? As flat as possible or do you have a set standard for flatness?

 

[Bill Gruby]

That's a tough one to answer Andre. It would take the sum of all component tolerances averaged and then go even tighter. Grizzly claims .0005 or closer . The final precision would be in how well you can hold the tolerances.

"Bill"

 

[Mark_f]

Out of curiosity, what kind of precision are you looking for out of the grinder? As flat as possible or do you have a set standard for flatness?

Bil is correct. Error accumulates, so the tighter we keep ALL tolerances, the better the accuracy.

 

[John Hasler]

My choice at this time is the inverted V track.

Explain? The only inverted V-track I'm familiar with is used for sliding stall doors.

 

[Bill Gruby]

The V in the way looks just like its written. The apex is at the bottom. It utilizes the outermost running sides of the bearing..

"Bill"

 

[Bill Gruby]

This is the type of bearing. The OD is shaped like a "W". The outer edges are what ride in the way.

http://www.ebay.com/itm/RM2-2RS-3-8...hash=item1e7e0166e9:m:mtycS5gWYDl7oSsUSPQhJ4A

"Bill"

 

[Andre]

What kind of bearings are those? On the inside that is. Can they take axial play without deflection?

If they are standard deep groove radial can you give them some negative camber (like what "damaged-in-the-head" people do to import car wheels) to give the affect of angular contact bearings? Turning some of the axial movement into radial loads. If you ever wanted to sidewheel parts or use a cup wheel on the face that is.