Read if looking for V-Groove rollers

[Spiral_72]

There are some inexpensive v-groove rollers on Ebay. The seller implies they are suitable for building a CNC with.

I don't have a problem with the seller. He shipped fast with a great transaction, but the rollers were terrible. I have never seen a ball bearing this bad. What's more, it's an integrated bearing - not replaceable...... so it doesn't appear I can install a higher quality bearing either.


I want to link to the rollers for you, but I don't wish to discredit the seller. I will say, the image in the description shows two v-groove rollers on a magenta background...... Buy from the seller, sure, but don't buy these rollers for a CNC.


Hope this helps

[Kipper]

These?

[Spiral_72]

That be the one.

Now I have ten. I dunno WHAT I'm going to do with them.



Maybe a nice sliding door or something.

[Kipper]

Will they not machine out? I actually thought of buying some to replace the bearings....postage kinda crippled the idea......Irvineman (US) has the real V groove bearings..



I'm not keen on cutting vee's

[jalessi]

The eBay Ad states they are guaranteed and that they are angular contact bearings.

Return them for a refund if they don't meet the advertised specifications.

Boring them out and replacing the bearings is also viable.

Jeff...

[lumberjack_jeff]

If they're angular contact, they should be sloppy until they are preloaded...

... but I'm not sure how you get any meaningful preload on v-groove bearings.

[dertsap]

i think those are going to be similar to the bearing wheels in the patio door dept at home depot , if they are then they are far too sloppy to do anything with

[Spiral_72]

No, the bearings really are THAT bad. I thought I could preload them and at least run true, but the balls "catch" in the race intermittently, so I'm not sure if I want to fight with them or not.

I could machine the rollers for a quality bearing but first, I don't have a lathe, or access to a lathe, therefore it would cost much more using a machine shop to do it, than buying a quality roller from a reputable manufacturer.

I still haven't decided if I'm going to bother with these. I found out yesterday, they won't run on a smaller steel angle, like 1"x1" angle.... The pocket of the v-groove is radiused and causes the roller to ride ABOVE the angle. The larger steel angle, like 3" has a radiused edge that works well, but 3" angle is a bit large to say the least. They are a 90degree v-groove though.

Ten v-groove rollers anyone? C'mon!? $25 right now

[asuratman]

Its just like alibaba and robinhood!

[keebler303]

1. "Caveat Emptor"

2. "You get what you pay for"

I'm pretty sure they aren't AC bearings. They aren't what you want in this application anyway. People are always talking about AC bearings so people say everything has them so it looks cool and high quality.

Matt
Matt

[Kipper]

Originally Posted by keebler303 1. "Caveat Emptor" 2. "You get what you pay for" I'm pretty sure they aren't AC bearings. They aren't what you want in this application anyway. People are always talking about AC bearings so people say everything has them so it looks cool and high quality. Matt Matt

Then again some just talk bollocks! "Lapsus Linguac"

[Spiral_72]

Originally Posted by keebler303 1. "Caveat Emptor" 2. "You get what you pay for" Matt Matt

It could have just as easily been: "WOW Y'ALL!!! I GOT THE MOST AMAZING DEAL ON SOME HIGH QUALITY ROLLERS WITH PREMIUM BEARINGS!!!"

But, alas..... I'm the putz.