V-Groove Bearing Source needed

[widgitmaster]

I have been searching for v groove bearings, I need them for a new slide design, but I can only find pictures!

Does anyone know of a supplier in the USA?

Thanks for rolling bye!
Eric

[juzwuz]

Eric,

Take a look at

http://www.cadcamcadcam.com/index.as...TS&Category=16

or

www.bwc.com

You have to register at bwc to view their prices. How many v-groove bearings and what size do you need? I do have some extra W1 size bearings and bushings and some new W4 size bearings if you want to buy some or trade something.

Justin

[widgitmaster]

Excellent!
That's exactly what I was looking for!
I had no idea this stuff was so expensive, as I'm used to buying ball bearings for a lot less than $15-22.00 ea.
Hardened and ground tracks are the key ingredient for my ideas, as using these v-bearings on soft steel would always wear down the tracks!

Thanks for the quick reply!

Eric

[juzwuz]

I've been planning on using cold rolled rectangular stock as a track for my W1 size bearings (1/8" thick by 2" wide) since the real v-track can be pricey. Lots of people just use angle iron and replace it when it gets too worn down. Apparently the bearings will initially seat themselves into the softer steel and then I guess the contact surface becomes "squished" enough to support the bearing loads.

Do you have a way to make the hardened and ground track?

Justin

[widgitmaster]

One of the issues I wish to overcome is the great distance between the y-axis slide rails and the center line of the spindle! With much investigation, the tightest design would be accomplished with rails and rollers, with a 1/2 ball screw in the middle.

Using round linear rails requires too much distance due to the larger diameters required for regidity, and the elimination of flex in the middle!

If I use a 7075 Aluminum bar machined in a way that it has hardened, or soft rails are nested in an opposing manner, with the ball screw and nut in the middle, the spindle distance is reduced by 90%

I would like to create a simple yet efficient slide carraige assembly about 24" long, with a z-axis of 9", using the least amount of materials, and at the lowest possible cost, to be used on my next router table and to be sold on eBay to those who don't have Briggeport's in their garages!

Unfortunately, I had built my 1st machine using round unsupported rails. Had I found CNC-Zone 1st, I would have changed my design from the beginning! Such is the learning Experience!

If the Hardened & Ground rails are too costly, or too difficult to cut to length, I may try making my own soft steel rails!

Eric

[spalm]

Sounds good. Maybe a picture to illustrate better?

As you might know, Yukonho used the type that rolls on a rod, instead of a flat rail. Seems like you might be able to mount rods into grooves and use this type.

He did a good job when he used them for his Z. You can read about how he got them here (second page):

Steve

[2muchstuff]

I've got a box full of W1's and W3's that I scrounged up but they have 70 degree grooves in them. Now if I could find a way to grind a piece of cold rolled straight and true to match for the rail, I'd be set.

[Anna Gong]

If you need the V groove bearings which the size from #1, #2, #3 and #4, please send the email market01@yi-tong.com to ask the prices. I think we have the competitive price all the world.

Anna Gong

[Anna Gong]

Also we can provide you the 70 degree grooves. Our journal bearings are used for the linear guidance system, in which the track has a "V" profile groove with an angle of 70 degrees. If you are interested to get more information, please send me email market01@yi-tong.com which will provide you more informations.

Anna Gong

[widgitmaster]

Originally Posted by spalm Sounds good. Maybe a picture to illustrate better? As you might know, Yukonho used the type that rolls on a rod, instead of a flat rail. Seems like you might be able to mount rods into grooves and use this type. He did a good job when he used them for his Z. You can read about how he got them here (second page): Steve

Hello Steve,
At this point, I think better on my feet! Especially with a Mill in front of me!
My ideas are not unique, as I have seen many images here on the Zone. My plans are to make something strong, compact and affordable for others! When I get the whole slide assembly in my hands, I'll post plenty of in-process images!

I think I can make an aluminum fixture that would hold a peice of Low Carbon ground steel on a 45 deg angle, so that I can mill one angle at a time, then flip the steel bar in the fixture to mill the other side. This would ensure a straight, and centered 90 deg point along the full length of the steel rail! And allow me to make many identical interchangable rails!

In order to keep things compact, I think I would preferr to use the 90 deg rails a v-groove bearings as opposed to using the round groove bearings and rails. Drilling cross holes in round rails would weaken them and result in highs and lows along the whole rail. Unless I used Thompson Case hardened rails, which would increase the cost!

As you can see, my thoughts are gravitating toward a stronger more ridgid design than was used in my first machine. (which will not cut aluminum)

I have contacted Anna Gong to get a quote on 100 pc of the v-groove bearings, hopefully the price will not shock my enthusiasm to a dead stop!

Eric

[widgitmaster]

Originally Posted by juzwuz Eric, Take a look at http://www.cadcamcadcam.com/index.as...TS&Category=16 or www.bwc.com You have to register at bwc to view their prices. How many v-groove bearings and what size do you need? I do have some extra W1 size bearings and bushings and some new W4 size bearings if you want to buy some or trade something. Justin

Hi Justin!
Did you say TRADE!
How many v-groove bearings do you have, I have plenty of stuff to trade with!
Eric

[Zumba]

Hey Eric,

If you can, please post the prices you get whenever Anna replies. I may be interested in participating in a "group buy" of some sort if it works out to lower prices.

BTW, are you getting 90 degree double vees or 70 degree?