I just got a Hartford vertical mill. I took a chance on it from HGR in Ohio, it showed up the other day and for what I paid for it everything looks great. The only issue I have is the spindle bore is not R8, Erickson qc 30, or nmtb 30. It is an 1 1/4 straight bore about 2 inches deep with one set screw in the side. Has anyone seen this or know what it is? There is no hole in the splined shaft for a draw bolt
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Largest Manufacturing Technology Community on the Web
Stay Connected:
Oddball Bridgeport clone (Hartford) spindle
- Thread starter wgadelman
- Start date
- Replies 23
- Views 2,683
tnmgcarbide
Diamond
- Joined
- Jul 6, 2004
- Location
- N. GA- 33.992N , -83.72W usa
sounds worse than a 1-A toolmaster. is the thing ancient ? as in pre-historic?
maybe you can adapt a collet chuck. tg-100 or er40 . is this a turret bpt type
machine- or more of a van-norman weirdo-turkey? a set-screw implies there
will be significant runout to the spindle.
are you sure this isn't some fucked-up production factory machine ,made to produce one part
all day long with the same tool and slave labor?
show a photo.
maybe you can adapt a collet chuck. tg-100 or er40 . is this a turret bpt type
machine- or more of a van-norman weirdo-turkey? a set-screw implies there
will be significant runout to the spindle.
are you sure this isn't some fucked-up production factory machine ,made to produce one part
all day long with the same tool and slave labor?
show a photo.
The Hartford here, which was bought new in the late 70s/early 80s(??)is R8. Due to replace bearings in the near future too, can't imagine what's done there on yours....sounds like a case of butchery or parts missing.
If you "go advanced" to preview your post, "manage attachments" will appear below the dialogue box > upload pics > voila!
If you "go advanced" to preview your post, "manage attachments" will appear below the dialogue box > upload pics > voila!
tnmgcarbide
Diamond
- Joined
- Jul 6, 2004
- Location
- N. GA- 33.992N , -83.72W usa
if you really want a discussion, that photo is useless. we can wait for a better
one.
one.
eKretz
Diamond; Mod Squad
- Joined
- Mar 27, 2005
- Location
- Northwest Indiana, USA
The picture can be improved a little, but still not real easy to interpret. Need more angles showing other views. It doesn't have drive keys, so obviously not a 30 taper. Are you positively sure it's not an adapter inserted into the actual spindle taper?
Here's a potato spec pic looking up the spout of a 2S, taper should be sufficiently evident, it's probably closer to 4~5" deep, drawbar up the top of course.
If it's 1.25", suggests it's intended to be R8, rather than anything else. Hard to imagine how you'd tighten a set screw, short of drilling the quill and doesn't strike me likely to produce much precision.
If it's 1.25", suggests it's intended to be R8, rather than anything else. Hard to imagine how you'd tighten a set screw, short of drilling the quill and doesn't strike me likely to produce much precision.
Attachments
Homebrewblob
Stainless
- Joined
- Apr 5, 2020
- Location
- Cincinnati
Is this that shop made steel plate table with the hartford head?
If so that’s not a vertical mill, more like a shop made drill press using a clone head.
The head is fixed and doesn’t move right?
And there’s no x/y table at all.
Or do you got something else?
Edit, never mind.
Here’s what I thought you bought LMAO
Used Drill Press Base | HGR Industrial Surplus
If so that’s not a vertical mill, more like a shop made drill press using a clone head.
The head is fixed and doesn’t move right?
And there’s no x/y table at all.
Or do you got something else?
Edit, never mind.
Here’s what I thought you bought LMAO
Used Drill Press Base | HGR Industrial Surplus
Last edited:
davehud
Cast Iron
- Joined
- Dec 17, 2004
- Location
- San Antonio, Texas
Frankenmill...
TDegenhart
Diamond
- Joined
- Mar 26, 2011
- Location
- Geneva Illinois USA
That is a machine designed to do one job. The only thing I can see that has any value is the bridgeport head and that is not not much as it appears that the original spindle has been replaced with a shop made spindle. Heaven knows what else has been done to the head. All I see is Bridgeport parts head and a few pennies of scrap steel.
Tom
Tom
eKretz
Diamond; Mod Squad
- Joined
- Mar 27, 2005
- Location
- Northwest Indiana, USA
Yep, that's an odd one. Not sure what you'd even call that... A mill press maybe? 
Did they make a Beaver quick change in 1¼" diameter maybe?
Did they make a Beaver quick change in 1¼" diameter maybe?
Homebrewblob
Stainless
- Joined
- Apr 5, 2020
- Location
- Cincinnati
That’s wild. Is it possible there’s a tool inserted into the spindle? I’ve never messed with a bp so I can’t tel where the spindle ends and a possible tool begins.
I agree ekretz, mill press
What was your plans when buying this? I don’t see any hand wheel x/y movements, only locks.
I agree ekretz, mill press
What was your plans when buying this? I don’t see any hand wheel x/y movements, only locks.
There is no through hole for a draw bar. I did a quick check on eBay the other day and didn't find a used R8 spindle. Was looking at the new imports that come with bearings, they would work till I could find a used one no more than I'm going to use it for now.
JohnEvans
Titanium
- Joined
- Sep 23, 2009
- Location
- Phoenix,AZ
Do not count on BP parts fitting that Hartford head!! BP's are made to inch dimensions 99% of the imports were made to metric. I have worked on a few of the imports and the parts look very close until you try to install them. A idea is get a straight shank ER collet chuck that has the correct size shank and fit that to the spindle ER 25 would probably work out OK.
