Head replaced once a year due to a broken taration?

[[Ya...]]

Hello everybody, 

every Year is the same. I am on Vacation for 2 weeks. 1-2 Weeks after that my Taration gives up.. 
I always use slow Speeds for first time runs. Crash speed is max 50mm/s on my shifts.. 

Is there something that can Cause Damages to the Taration inside of a Vast Gold Head? 
The heaviest probe is a 340g Start Probe Ø3mm.  

I also have the feeling while changing probesystems the head is getting to much force..

I am Paranoid and keep teaching-in the Holder positions once a Week.
On our other Machine we have a Vast XT Gold Head. In my 5 Years with this Company has never been changed.. (Machine max speed is 70mm/s)

Is it normal to need a new Head every Year? (Vast Gold, aka long Boi) 

[[No...]]

On our old Contura (installed 2001) with a non-gold XT head we were used to replacing the head once every 1.5 to 2 years on average. The CMM ran almost 24/7 in 3 shifts and operators were untrained in Calypso (only Autorun), so they often overlooked obvious collision risks, which contributed a great deal to the number of harmful collisions. Most of the time the head failed due to worn dampening or broken taration.