Looking for custom handwheel dial or a used dial that does 100/1000 roughly 1-1/2"od

Mike Gre · Mar 27, 2018

Looking for custom handwheel dial or a used dial that does 100/1000 roughly 1-1/2"od

I have a Harding TM that was unfortunately automated with a hydraulic cylinder on the X axis :cryin:

. I had to make a new leadscrew, end plates, and bushings. I am done with that but I need a new or used handwheel dial. I would be fine with something that needs a bit of machining. Shaft is .490 and OD on the dial should be roughly 1-1/2". I have attached a pic of another dial on the machine. Graduations are 1/1000 and 100 per rev. 10TPI lead screw. If anyone knows someone that can make or mark a handwheel dial for a decent price please let me know. Thanks for the help.

winger · Mar 27, 2018

Sure about the 1.5 dia. 3" would be a lot easier to read.

Dave

thermite · Mar 27, 2018

Mike Gre said:
Graduations are 1/1000 and 100 per rev. 10TPI lead screw. If anyone knows someone that can make or mark a handwheel dial for a decent price please let me know. Thanks for the help.View attachment 224313 View attachment 224314

"Decent price" doesn't look easy unless you want to make the bugger and send it off for engraving. Handwheel (not hard to find) and dial (tougher) separate goods, of course.

There are, OTOH, several Ammco disk brake lathe recycles on the 'bay at the moment for around $30-$50 as might get you up and running. Some just the graduated collar, others handwheel and all.

Might be cheaper - also arguably BETTER to adapt a caliper to DRO duty. TM doesn't have a great deal of travel.

Brian@VersaMil · Mar 28, 2018

Most of the machines I manufacture use 10TPI leadscrews, and I make micrometer dials in three sizes- all with 100
graduations. My smallest micrometer dial I'll have to measure the OD, but I engrave the numbers and graduations in about
FIVE seconds a dial on a special engraving machine. My larger dials are engraved in a CNC mill, and obviously take a bit longer and cost more money.

L Vanice · Mar 28, 2018

I have some original used Hardinge TM parts. I have the whole table feed screw and both end pieces with dial and hand crank. Too bad you went to all that work before asking.

Price $150 plus shipping.

Larry

Mike Gre · Mar 28, 2018

Bryan; If I made the dial with a 45 degree face what would you charge me to engrave it with numbers and graduations?

Mike Gre · Mar 28, 2018

I would have been better off getting a stock feed screw and parts. At least I got some more time around a follow rest and acme threads. This is a strange mill though it was listed as a hardinge TM but has no overarm. I cannot find any information on it. If anyone knows what mill this is please let me know.

ken moss · Mar 28, 2018

I think I have a dial for you I saw it today I will look ken

L Vanice · Mar 28, 2018

Mike Gre said:
I would have been better off getting a stock feed screw and parts. At least I got some more time around a follow rest and acme threads. This is a strange mill though it was listed as a hardinge TM but has no overarm. I cannot find any information on it. If anyone knows what mill this is please let me know. View attachment 224421 View attachment 224422

Well, the pictures are very helpful. Now I know you have a Hardinge BB4 mill.

I might have the BB4 parts you need. If you still have the original feed nuts, they have 7/16-10 square threads, not acme. So your acme screw will wreck the nuts.

Larry

Mike Gre · Mar 29, 2018

L Vanice said:
Well, the pictures are very helpful. Now I know you have a Hardinge BB4 mill.

I might have the BB4 parts you need. If you still have the original feed nuts, they have 7/16-10 square threads, not acme. So your acme screw will wreck the nuts.

Larry

View attachment 224433 View attachment 224434

I had to make a new feed nut as well since they tapped them to 1/2-13 for the end of the cylinder. However you say feed nut(s). I only saw one brass nut right side of the saddle recessed about 1/2". Am I missing something that there should be more than 1? At this point I am probably going to just try and put a dial on my new feed screw but if you have all the parts I need I would be interested in a quote. I did end up making everything new 7/16 - 10 acme.

Mike Gre · Mar 29, 2018

ken moss said:
I think I have a dial for you I saw it today I will look ken

I would be interested if you do. Thanks.

Mike Gre · Mar 29, 2018

Actual listing for the mill

Hardinge TM/UM Manual Milling Machine w/ 13-1/4" X 3-1/4" 4C T-Slot Table | eBay

This is the listing of another identical mill to mine if anyone is interested in this clearly mis-marketed mill. It looks like he must have a whole lot of these because he relisted as soon as I bought this one. And no I did not pay anywhere near the asking price.

L Vanice · Mar 29, 2018

Mike Gre said:
I had to make a new feed nut as well since they tapped them to 1/2-13 for the end of the cylinder. However you say feed nut(s). I only saw one brass nut right side of the saddle recessed about 1/2". Am I missing something that there should be more than 1? At this point I am probably going to just try and put a dial on my new feed screw but if you have all the parts I need I would be interested in a quote. I did end up making everything new 7/16 - 10 acme.

The table feed nuts are in two parts. The inner nut is pushed all the way into a hole in the saddle and held with a set screw. The outer nut has fine threads on the outside and is screwed into the same saddle hole and retained with a steel lock nut. By adjusting the outer nut position, you can eliminate backlash on the unworn part of the feed screw. As I mentioned, the OEM longitudinal and cross feed threads are 7/16-10 square profile. The vertical feed is 1/2-10 square profile.

Larry

Mike Gre · Mar 29, 2018

L Vanice said:
The table feed nuts are in two parts. The inner nut is pushed all the way into a hole in the saddle and held with a set screw. The outer nut has fine threads on the outside and is screwed into the same saddle hole and retained with a steel lock nut. By adjusting the outer nut position, you can eliminate backlash on the unworn part of the feed screw. As I mentioned, the OEM longitudinal and cross feed threads are 7/16-10 square profile. The vertical feed is 1/2-10 square profile.

Larry

View attachment 224540

That makes sense and a smart way to adjust for wear.

I just made and threaded a new inner nut to 7/16-10 acme out of brass used the existing set screw to hold it in then cut the fine threads on the outside of a piece of 4140 just long enough to be 1 turn from bottoming out while retaining the feed nut and reamed a 7/16 hole in it. I can see now that I have no way to adjust backlash for a worn feed screw. hopefully since it is new I will be a while from needing that adjustment.

ken moss · Mar 29, 2018

The dial I have is 2.125 od 100 divisions ken

Brian@VersaMil · Mar 30, 2018

The tooling I use to engrave my leadscrew nuts is for an exact size blank that is slightly smaller than 1 1/4 inches. The engraving tooling
engraves JUST a round dial with no 45 degree angle. So unless you come up empty handed, NOT exactly what you're looking for.

TitaniumBlue · Aug 2, 2020

Mike, I have the same miller, mine is first generation Hardinge Cataract. What did you find for your dial?
I am looking for a replacement x axis barrel nut. How did you make yours, on the lathe or did you use a tap?

L Vanice · Aug 4, 2020

TitaniumBlue said:
Mike, I have the same miller, mine is first generation Hardinge Cataract. What did you find for your dial?
I am looking for a replacement x axis barrel nut. How did you make yours, on the lathe or did you use a tap?

I have sets of very old taps for the Hardinge Cataract machines. I have the 5/16, 3/8, 7/16 and 1/2 inch, all 10 TPI square (not Acme) form in left and right hand. I think they were originally the property of a Hardinge rebuilder in Chicago. I also have a small selection of feed screws and other parts. On many Cataract and even some later machines, Hardinge sold replacement feed nuts in solid metal, leaving the rebuilder to drill and tap them to ensure that the screw would line up with the tapped hole after the dovetails were re-scraped.

The later Cataract bench millers had anti-backlash table nuts made in two pieces and were supplied already tapped, as shown below in post #13.

Larry

Looking for custom handwheel dial or a used dial that does 100/1000 roughly 1-1/2"od

Plastic

Stainless

Diamond

Stainless

Diamond

Plastic

Plastic

Stainless

Diamond

Plastic

Plastic

Plastic

Diamond

Plastic

Stainless

Stainless

Plastic

Diamond

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