How are drill presses measured?

Thread Starter

willie24

Joined Mar 19, 2019
1
When I see 14'' drill press, what does that mean? Is it the distance from the center of the chuck to the closest point on the support post?

I find related blog


Need some advice.
Advance Thanks.
 
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jpanhalt

Joined Jan 18, 2008
11,087
Welcome to AAC.

Generally, I think it is about twice that distance. In other words, it can drill to the center of a circle 14" diameter circle. But, it is not precise. The center of the spindle of my 14" drill press is closer to 6-1/2" from the post.

It just occurred to me that there may be two standards, as there are with lathes. A 9" lathe can refer to the maximum diameter (typically in the US) or maximum radius that can be turned. There's a big difference.
 
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MaxHeadRoom

Joined Jul 18, 2013
30,654
It just occurred to me that there may be two standards, as there are with lathes. A 9" lathe can refer to the maximum diameter (typically in the US) or maximum radius that can be turned. There's a big difference.
And in the UK for e.g. that lathe would be a 4.5" (Radius) swing.
Max.
 

jpanhalt

Joined Jan 18, 2008
11,087
It means the swing is 14", which means it can drill a hole in the middle of a 14" round or 14" square stock. It's the distance from the center of the bit to the column, times two.
Glad you agree with me.
And in the UK for e.g. that lathe would be a 4.5" (Radius) swing.
Max.
Yes, One of my lathes is an excellent Smart and Brown Mark II. Everything about it is a pleasure to work with except for two things: in and out are opposite to American terms and crossfeeds are in thousanths radius, not diameter change.

When switching from my much inferior 9" Southbend Heavy, the hardest part to get used to is the in and out. Fortunately, the Southbend is basically a polishing lathe now.
 

Wolframore

Joined Jan 21, 2019
2,619
The old south bends are not bad machines but after many years need a tune up. I still kick myself for being too late to buy a used Hardinge from a retiring machinist. I have a Knuth and it's ok... Chinese with German engineering... Meh. Get's the job done.
 
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