What are these reamers for? (stubby reamers with Morse taper shanks)

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paroikoi

Aluminum

Joined

Oct 2, 2014

Location

Jonesboro, AR, USA

• Sep 5, 2021

• #1

Hello. These two reamers came along with some machining stuff I bought a while back. Will you experts please let me know what these might best be used for? I'm trying to decide if I should keep or sell them. The shanks appear to be Morse Taper #2, or at least they fit snugly in my 10EE tail stock quill. Surely they're made for a different application, though, since the flats can't be used to prevent them from rotating by the stops in the quill (since the reamers are so short).



Here are more photos:

stub reamers - Google Photos

Thanks in advance,
Josh

 

L

L Vanice

Diamond

Joined

Feb 8, 2006

Location

Fort Wayne, IN

• Sep 5, 2021

• #2

If there is a hole through the center, they are counterbores. You took a bunch of pictures, but all of the side view, so no way to tell if they have a hole.

Larry

 

I

Illinoyance

Stainless

Joined

Aug 24, 2015

• Sep 5, 2021

• #3

Larry was quicker than I was. Shanks are stub Morse taper. Counterbores have a square end, reamers have a chamfer.

 

P

paroikoi

Aluminum

Joined

Oct 2, 2014

Location

Jonesboro, AR, USA

• Sep 5, 2021

• #4

L Vanice said:

You took a bunch of pictures, but all of the side view, so no way to tell if they have a hole.

Larry

Click to expand...

I never said I was smart...

 

B

Bill D

Diamond

Joined

Apr 1, 2004

Location

Modesto, CA USA

• Sep 5, 2021

• #5

Note the tang has nothing to do with torque it is just to help eject the tool.
Bill D

 

U

upm2019

Aluminum

Joined

Jun 16, 2020

Location

Piedmont

• Sep 5, 2021

• #6

I’m pretty sure these are taper pipe reamers. You would use them before tapping

 

P

paroikoi

Aluminum

Joined

Oct 2, 2014

Location

Jonesboro, AR, USA

• Sep 5, 2021

• #7

I just checked, and they are not tapered.

 

4GSR

Diamond

Joined

Jan 25, 2005

Location

Victoria, Texas, USA

• Sep 5, 2021

• #8

Skully-Jones used to make holders that held these as well as counter bores with this short taper shank. There may be a couple of other companies that made them too. IDK. This stuff is pretty much obsolete unless you can find a holder. The adapter holder usually has a full morse taper shank on them. They do appear in epay once in a while. Ken

 

johnoder

Diamond

Joined

Jul 16, 2004

Location

Houston, TX USA

• Sep 5, 2021

• #9

I have a pile new, but different - cross hole thru straight shank. They turned out to be production reamers for lifter bores in Mopar V8 cylinder blocks

 

P

paroikoi

Aluminum

Joined

Oct 2, 2014

Location

Jonesboro, AR, USA

• Sep 5, 2021

• #10

Thanks, all.

 

gbent

Diamond

Joined

Mar 14, 2005

Location

Kansas

• Sep 5, 2021

• #11

There is important information on the shanks. We could help you a lot more if you would simply list the information on the shank.

 

P

paroikoi

Aluminum

Joined

Oct 2, 2014

Location

Jonesboro, AR, USA

• Sep 5, 2021

• #12

gbent said:

There is important information on the shanks. We could help you a lot more if you would simply list the information on the shank.

Click to expand...

That's why I took all the photos, as mentioned above. You're right, though, that I should have transcribed it here. Here goes:

930-27205-66 BCCO
M2 DIA. .9998
DHM282-6 ID514566

 

gbent

Diamond

Joined

Mar 14, 2005

Location

Kansas

• Sep 6, 2021

• #13

Barber Colman Company, perhaps? The 4 digit size suggests they are just standard reamers with a short shank, probably for use in a radial arm drill with an adapter that allows changing without extending the quill.

 

P

paroikoi

Aluminum

Joined

Oct 2, 2014

Location

Jonesboro, AR, USA

• Sep 6, 2021

• #14

gbent said:

Barber Colman Company, perhaps? The 4 digit size suggests they are just standard reamers with a short shank, probably for use in a radial arm drill with an adapter that allows changing without extending the quill.

Click to expand...

That would make sense. Thanks for the explanation.