Kearney & Trecker model AC-24

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sparky1015

Plastic

Joined

Dec 26, 2017

• Dec 26, 2017

• #1

First off I am new to the forum I am in the process of buying a Kearney & Trecker model AC-24 3lp -24 horizontal mill serial 4-6392 does anyone know anything about these ? would there be any reason i wouldn't be able to use a dividing head and tailstock on the mill table ? also does anyone know the weight of this mill? any input on this would be appreciated Thanks

 

johnoder

Diamond

Joined

Jul 16, 2004

Location

Houston, TX USA

• Dec 26, 2017

• #2

Welcome to forum

Production mill - don't know if ever intended for DRIVING a DH, but maybe okay with it just sitting there

These are very limited in cross slide travel - 6" in '57 catalog

Intended for making the same cut on thousands of identical pieces

One of a lot of 15 from February 1951

Manual scan

http://www.vintagemachinery.org/pubs/2098/6523.pdf

 

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sparky1015

Plastic

Joined

Dec 26, 2017

• Dec 26, 2017

• #3

Thanks for the input johnoder and for pointing out the limited cross slide travel I hadn't gave much thought to that but it does make sense the guy said the table was 14". pretty wide for a smaller machine .He also said he estimates the machine weighs 2500 lbs that seems a little light to me ? I think it will weigh a little more than that

 

johnoder

Diamond

Joined

Jul 16, 2004

Location

Houston, TX USA

• Dec 27, 2017

• #4

3250 approximately in 1957 catalog for AC-24

sparky1015 said:

Thanks for the input johnoder and for pointing out the limited cross slide travel I hadn't gave much thought to that but it does make sense the guy said the table was 14". pretty wide for a smaller machine .He also said he estimates the machine weighs 2500 lbs that seems a little light to me ? I think it will weigh a little more than that

Click to expand...

 

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RandyZ

Aluminum

Joined

Jan 29, 2006

Location

Thunder bay, On.

• Dec 27, 2017

• #5

I have an AC24 as well. 16-6358 They are set up to drive a dividing head. Enjoy.

 

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frankd

Plastic

Joined

Apr 9, 2020

• Apr 9, 2020

• #6

I just purchased as AC24 ser no.2-6719. When I tried to unscrew the drawbar I found that the nut turned without anything happening. Then I discovered the taper pin in the nut was sheared. I have been unable to turn the drawbar and tapping it on the end with a hammer does nothing. I cannot find a parts diagram for this machine. Does anyone know how the drawbar is removed from this machine?

 

johnoder

Diamond

Joined

Jul 16, 2004

Location

Houston, TX USA

• Apr 9, 2020

• #7

The pinned nut does not loosen it, the one closer to the machine does (the one with the pilot diameter). You can loosen that one by holding the spindle from turning

When you get it backed off about a turn or two, WHACK the end to loosen the taper - and unscrew the draw bar the rest of the way to remove spindle tooling. (hold on to same so it does not fall down on ways. etc)

 

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frankd

Plastic

Joined

Apr 9, 2020

• Apr 9, 2020

• #8

Thanks so much johnoder Diamond. You have saved the day.

Frank

 

johnoder

Diamond

Joined

Jul 16, 2004

Location

Houston, TX USA

• Apr 10, 2020

• #9

frankd said:

Thanks so much johnoder Diamond. You have saved the day.

Frank

Click to expand...

You are entirely welcome , Frank.