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:
Tools breaking off in Schunk Hydraulic Tendo holders
- Thread starter mColton
- Start date
- Replies 7
- Views 1,436
Orange Vise
Titanium
- Joined
- Feb 10, 2012
- Location
- California
How far in are they breaking?
Hydraulics have pinch points ("rings") and don't grab the tool uniformly down the entire bore.
Hydraulics have pinch points ("rings") and don't grab the tool uniformly down the entire bore.
mhajicek
Diamond
- Joined
- May 11, 2017
- Location
- Maple Grove, MN, USA
I believe hydraulics are better for finishing, and shrink fits are better for roughing.
fmari --MariTool-
Titanium
- Joined
- Nov 15, 2005
- Location
- Illinois
Hydraulics are good for high speed machining and light to medium roughing and of coarse fine finishing.
Shrinks are great for high speed machining and medium to medium heavy roughing.
Endmill holders are great for heavy roughing.
It is not uncommon for shanks to break inside of endmill holders as well.
Lots of people go one size larger on hydraulic holders so they have to use a sleeve. Advantage is that is a tool breaks, worst case the sleeve is damaged and not the holder. Disadvantage is a little reduction in grip and depending on the sleeve increase in TIR.
Shrinks are great for high speed machining and medium to medium heavy roughing.
Endmill holders are great for heavy roughing.
It is not uncommon for shanks to break inside of endmill holders as well.
Lots of people go one size larger on hydraulic holders so they have to use a sleeve. Advantage is that is a tool breaks, worst case the sleeve is damaged and not the holder. Disadvantage is a little reduction in grip and depending on the sleeve increase in TIR.
Machinerer
Cast Iron
- Joined
- Jun 12, 2009
- Location
- Clearwater, FL
A milling chuck, or a solid holder with a weldon flat might be better if you're really pushing the limits of the tool.
D Nelson
Stainless
- Joined
- Jan 7, 2015
- Location
- Missouri Ida
We have one of them holders that uses inserts to reduce it down to .5 from 3/4 our insert got bad and caused our to have troubles
Don
Sent from my iPhone using Tapatalk Pro
Don
Sent from my iPhone using Tapatalk Pro
JMC
Cast Iron
- Joined
- Aug 30, 2007
- Location
- Northern Utah
I have had it told that it actually increases the holding power by using a sleeve. It was explained to me that a 1 1/4" hydraulic holder has a lot more force than a 1/2". By using a sleeve it takes the force that is used to hold a 1 1/4" tool and applies to the 1/2" tool. Made sense at the time.
fmari --MariTool-
Titanium
- Joined
- Nov 15, 2005
- Location
- Illinois
Yes but other factors come into play when using a sleeve.
Because of manufacturing tolerances you have additional play that the hydraulic holder needs to compensate for when you add a sleeve resulting in same or less grip.
Because of manufacturing tolerances you have additional play that the hydraulic holder needs to compensate for when you add a sleeve resulting in same or less grip.
