hi all,, this is for information please. a recently purchased Hercus 260 lathe with a threading dial i am not familiar with. in the pics can be seen 3 separate brass gears and on the other side of the device 3 sets of numbers 24-33-35 for the tooth count of each gear? my main question is which set of numbers do i use when i bolt it back to the carriage?????? thank you in advance!
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:
thread chasing dial
- Thread starter macsonboy
- Start date
- Replies 5
- Views 343
Rob F.
Diamond
- Joined
- Aug 5, 2012
- Location
- California, Central Coast
Probably will depend on what threads you want to cut. Is there more info on a plate anywhere else on the machine, maybe near the QCGB?
edit:
Some info on lathesUK that it is for metric thread pitches, from link below: "Late Model Hercus Model ATM Series 260 belt-drive lathe with backgear; the multi-gear dial thread indicator fitted was of the type able to cope with a wide range of Metric thread pitches."
edit:
Some info on lathesUK that it is for metric thread pitches, from link below: "Late Model Hercus Model ATM Series 260 belt-drive lathe with backgear; the multi-gear dial thread indicator fitted was of the type able to cope with a wide range of Metric thread pitches."
Hercus Lathes
Hercus was a family-owned southern Australian machine-tool maker with works in Anderson Street, Southwark. Besides drills, hacksaws, shapers, tool & cutter and semi-universal grinding machines - and at least two models of horizontal miller (with a vertica
www.lathes.co.uk
Hercus 260-AM Lathe
Hercus was a family-owned southern Australian machine-tool maker with works in Anderson Street, Southwark. Besides drills, hacksaws, shapers, tool & cutter and semi-universal grinding machines - and at least two models of horizontal miller (with a vertica
www.lathes.co.uk
Last edited:
thank you Rob, this helps.
johnmontrose
Aluminum
- Joined
- Sep 25, 2007
Tell us the pitch of your leadscrew and we can tell you what gear (if any) is needed for every reasonable metric pitch.
Look hard and you will find the chart you need (post#53 here):
www.hobby-machinist.com
Hercus has not been smart: why write a thread pitch onto the chart just because the gearbox can be set up to produce it (e.g. 1.1mm, 1.6mm), even though that thread is never used in the real world?
Look hard and you will find the chart you need (post#53 here):
Hercus 260 (south Bend Gs26-075)
I finally found a C5 collet adapter that fits my spindle. Only thing is the small pin is missing. Need some advice...do you reckon I could braze in a pin or should I weld it in? I'm a bit concerned the welding temp might soften the adapter and the pin steel. Any ideas welcome. BTW its a...
www.hobby-machinist.com
Hercus has not been smart: why write a thread pitch onto the chart just because the gearbox can be set up to produce it (e.g. 1.1mm, 1.6mm), even though that thread is never used in the real world?
Last edited:
Similar threads
