Accurate holes.
 

I have two 5/8" plates that will be 4" away from each other, parallel.
They will be identical. They will be held together with pieces of 4"x4"
heavy wall square tubing acting as spacers, and everything is assembled
with bolts. It's a tubing roller. There are two shafts, perpendicular
to the surface of the plate, and they need to be mounted with roller
bearings.

I need to put two holes in each plate that match perfectly and are the
exact size needed to press fit the bearings into. My best idea is to
tack the plates together, wouldn't that work?

And for the proper hole size, its going to need to be something like 2
5/16" and the closest I can get with a drill bit is 2". how do I get
the rest of the way without a milling machine?

Thanks for the help
- LP

Accurate holes.
 

Loren wrote:

I have two 5/8" plates that will be 4" away from each other, parallel.
They will be identical. They will be held together with pieces of 4"x4"
heavy wall square tubing acting as spacers, and everything is assembled
with bolts. It's a tubing roller. There are two shafts, perpendicular
to the surface of the plate, and they need to be mounted with roller
bearings.

I need to put two holes in each plate that match perfectly and are the
exact size needed to press fit the bearings into. My best idea is to
tack the plates together, wouldn't that work?

And for the proper hole size, its going to need to be something like 2
5/16" and the closest I can get with a drill bit is 2". how do I get
the rest of the way without a milling machine?

Thanks for the help
- LP



Drill and then ream to size.


John

Accurate holes.
 

Loren wrote:

I have two 5/8" plates that will be 4" away from each other, parallel.
They will be identical. They will be held together with pieces of 4"x4"
heavy wall square tubing acting as spacers, and everything is assembled
with bolts. It's a tubing roller. There are two shafts, perpendicular
to the surface of the plate, and they need to be mounted with roller
bearings.

I need to put two holes in each plate that match perfectly and are the
exact size needed to press fit the bearings into. My best idea is to
tack the plates together, wouldn't that work?

And for the proper hole size, its going to need to be something like 2
5/16" and the closest I can get with a drill bit is 2". how do I get
the rest of the way without a milling machine?

Thanks for the help
- LP


I've been there, done that. Tacking them together works fine, go for it.
It is certainly possible to fit a boring head to a drill press, in fact I own a
3MT shank for my 2" Criterion boring head, and I don't even own a drill press
anymore. With a boring head, it would be easy. Otherwise, it won't be. - GWE

Accurate holes.
 

Loren wrote:
I have two 5/8" plates that will be 4" away from each other, parallel.
They will be identical. They will be held together with pieces of 4"x4"
heavy wall square tubing acting as spacers, and everything is assembled
with bolts. It's a tubing roller. There are two shafts, perpendicular
to the surface of the plate, and they need to be mounted with roller
bearings.

I need to put two holes in each plate that match perfectly and are the
exact size needed to press fit the bearings into. My best idea is to
tack the plates together, wouldn't that work?

And for the proper hole size, its going to need to be something like 2
5/16" and the closest I can get with a drill bit is 2". how do I get
the rest of the way without a milling machine?

Got a lathe?

Accurate holes.
 

I personally would find a machine shop to machine the holes for you,
especially for a bearing fit. An alternative might be to drill oversize
holes
and then use frange bearings bolted onto your plates?????????

Ace
"Loren" wrote in message
oups.com...
I have two 5/8" plates that will be 4" away from each other, parallel.
They will be identical. They will be held together with pieces of 4"x4"
heavy wall square tubing acting as spacers, and everything is assembled
with bolts. It's a tubing roller. There are two shafts, perpendicular
to the surface of the plate, and they need to be mounted with roller
bearings.

I need to put two holes in each plate that match perfectly and are the
exact size needed to press fit the bearings into. My best idea is to
tack the plates together, wouldn't that work?

And for the proper hole size, its going to need to be something like 2
5/16" and the closest I can get with a drill bit is 2". how do I get
the rest of the way without a milling machine?

Thanks for the help
- LP

Accurate holes.
 

On Wed, 07 Dec 2005 20:34:20 -0800, Grant Erwin
wrote:

Loren wrote:

I have two 5/8" plates that will be 4" away from each other, parallel.
They will be identical. They will be held together with pieces of 4"x4"
heavy wall square tubing acting as spacers, and everything is assembled
with bolts. It's a tubing roller. There are two shafts, perpendicular
to the surface of the plate, and they need to be mounted with roller
bearings.
I need to put two holes in each plate that match perfectly and are the
exact size needed to press fit the bearings into. My best idea is to
tack the plates together, wouldn't that work?
And for the proper hole size, its going to need to be something like 2
5/16" and the closest I can get with a drill bit is 2". how do I get
the rest of the way without a milling machine?
Thanks for the help
- LP


I've been there, done that. Tacking them together works fine, go for it.
It is certainly possible to fit a boring head to a drill press, in fact
I own a 3MT shank for my 2" Criterion boring head, and I don't even own
a drill press anymore. With a boring head, it would be easy. Otherwise,
it won't be. - GWE

You could use a fly cutter instead of the boring head, lot cheaper. I'm
not sure
how you could get the proper diameter using a drill press though. Maybe
somebody else would know.

Wayne D.