Collet Concentrity Precision
> Collet Concentrity Precision

The rotation precision of the ER collets refers to the hole and the two external cones.


The concentricity value of the collets ER system is given by the sum of several components:

  • • Taper precision of the 8° of the toolholder seat

  • • Concentricity precision between the collet seat and the ISO cone of the toolholder

  • • Concentricity precision between the toolholder thread and the ISO cone

  • • 30 ° cone precision of the nut

  • • Concentricity precision between the 30 ° of the nut and the thread of the nut

Serinex produces ER collets with 3 levels of precision:contaconcentricità.JPG

  • • STANDARD – concentrity precision 0.015

  • • UP/HP - ULTRA PRECISION / HIGH PRECISION - concentrity precision 0.005

  • • MP - MEGA PRECISION - concentrity precision 0.002


The concentricity value of the ETS collets system is given by the sum of several components:

  • • Taper precision of the 8° of the toolholder seat

  • • Concentricity precision between the collet seat and the ISO cone of the toolholder

  • • Concentricity precision between the toolholder thread and the ISO cone


The concentricity value of the EOC collets system is given by the sum of several components:

  • • Taper accuracy of 2° 51'45 '' of the toolholder seat

  • • Concentricity precision between the collet seat and the ISO cone of the toolholder

  • • Concentricity precision between the toolholder thread and the ISO cone

  • • 30 ° cone precision of the nut

  • • Concentricity precision between the 30 ° of the nut and the thread of the nut


The concentricity value of the SKS collets system is given by the sum of several components:

  • • Taper precision of the 4° of the toolholder seat

  • • Concentricity precision between the collet seat and the ISO cone of the toolholder

  • • Concentricity precision between the toolholder thread and the ISO cone