[SteveMI]

I have several or more 1/8" radius round-over bits. Most have a 3/8" diameter bearing. An example is the Whiteside 2005C that comes with a 1/2" OD bearing (B3).
Roundover & Beading Bit, 1/8 Radius, 1/2 Shank, Whiteside 2005C

Although Whiteside sells a B1A ball bearing at 1/4" OD, it would be undersized to the carbide of the 2005C.

Does anyone know of a 1/8" radius round-over, preferably in 1/2" shank, that has a 1/4" OD bearing? I like Whiteside and Amana, but will consider others.

Steve.

 

[kp91]

I would call MLCS, their 1/4 inch shank 1/8" might have a small bearing.

 

[tomp913]

MLCS shows a 1/4" OD bearing on their site

https://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bushing_ball_bearings.html?zoom_highlight=bearings

But they don't say which bit it would fit but their 1/8" RO bit has an OD of 3/4" so I'd guess that the bearing is 1/2" (1/2 + (2 x 1/8). If you need the bearing to be 1/4", would one of the bits with an integral brass bearing work for you? Infinity Tools has a 1/8"O bit with a brass pilot - and I'd guess that the brass is 3/16" OD from the dimensions - but it only comes in 1/4" shank.

https://www.infinitytools.com/brass-pilot-router-bits-4782

 

[Stick486]

here ya go...

Freud Tools | 1/8" Radius Rounding Over Bit

 

[SteveMI]

here ya go...

Freud Tools | 1/8" Radius Rounding Over Bit

It has 1/2" diameter bearing. I need 1/4" bearing diameter.

 

[SteveMI]

If you need the bearing to be 1/4", would one of the bits with an integral brass bearing work for you? Infinity Tools has a 1/8"O bit with a brass pilot - and I'd guess that the brass is 3/16" OD from the dimensions - but it only comes in 1/4" shank.

I have a couple of those, but they seem fragile for any hard work. As an intermediate method it may work.

Steve.

 

[SteveMI]

https://www.infinitytools.com/brass-pilot-router-bits-4782

How is the OEM "OUT OF STOCK - Expected On: 12/08/2017" on all of them? If nothing else comes up then maybe that is the way to go for now.
Steve.

 

[Semipro]

Steve
Can’t you buy just the bearing rockler and lots Companies sell them
The first bearing on this site has a 1/4OD
https://woodworker.com/1-4-router-b...MItNuvm5qA1wIVg5R-Ch2TVgLJEAQYAiABEgIa8fD_BwE

 

[Stick486]

It has 1/2" diameter bearing. I need 1/4" bearing diameter.

so change the bearing...

 

[Stick486]

I have a couple of those, but they seem fragile for any hard work. As an intermediate method it may work.

Steve.

they're not...

 

[tomp913]

Not knowing what the OP plans to do with the bit................. The problem with just changing the bearing is that the OD of the cutter at the bearing also needs to be considered - look at the photos of the bits, admittedly generic, but they all show the bottom of the radius in line with the OD of the bearing (and I guess that's a given if you want a true roundover - the bit and bearing have to be the same diameter). Putting a smaller bearing on a bit like that will give a beading profile at the bottom of the part.

 

[tomp913]

Here's a 1/8" RO bit with 5/16" dia bearing - but 1/4" shank. With that small of a cutter, a 1/2" shank is not really necessary IMO. Miniature Round Over Router Bits | Rockler Woodworking and Hardware

 

[DaninVan]

Anything here help? (Lee Valley)
Router Bit Ball Bearings - Lee Valley Tools

 

[Stick486]

Not knowing what the OP plans to do with the bit................. The problem with just changing the bearing is that the OD of the cutter at the bearing also needs to be considered - look at the photos of the bits, admittedly generic, but they all show the bottom of the radius in line with the OD of the bearing (and I guess that's a given if you want a true roundover - the bit and bearing have to be the same diameter). Putting a smaller bearing on a bit like that will give a beading profile at the bottom of the part.

this what the OP will get or a variation here of....

.

 

[TWheels]

I know MLCS is a 4 letter word to some here, but they have brass piloted roundover bits with 3/16 inch dimaeter pilots.https://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bit_brass.html

 

[Bro Jabez]

hi Steve have you checked on bangood? they sell some great stuffs at good rates.

 

[MEBCWD]

Steve what are you trying to do that you need an odd round over bit? Maybe something else would work if we knew.

 

[SteveMI]

Steve what are you trying to do that you need an odd round over bit? Maybe something else would work if we knew.

I'm making some puzzles on my CNC, but this could also be an issue with a template rounting that had square inside corners also. The inside corners are 1/8" radius from a 1/4" diameter router bit. I want to get a smooth round-over on that corner. So, any bearing larger than 1/4" diameter ends up with a mismatch in the corner showing un-rounded edge.

I tried a couple of the brass tipped bits last night and the result is good. This would have to be a secondary rounting since there is a lot of other round-over to do and would be best with the 1/2" shank round-over.

Steve.

 

[Semipro]

Why are you not using dog bone fillet in your cnc to compensate for square corners ?

 

[SteveMI]

Why are you not using dog bone fillet in your cnc to compensate for square corners ?

I don't like the look of the dog bone fillets in these. Actually the CAM is from V-Carve Pro.
Steve.