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​BIG-PLUS® spindle system* is adopted by a large number of machining centres and many machine-tool builders have recognized this system for its excellent performance.  BIG-PLUS is a dual-contact system that provides  taper and flange contact when tool holders are clamped into the spindle.

The BIG-PLUS  solid holder assortment consists of  Machine interface adaptor, Face mill, Combi Weldon/ISO9766 holders , CoroChuck™ 930 and ER collet chucks. Choose solid holders when there is a small need for flexibility in high batch production.

* BIG-PLUS® SYSTEM – licensed by BIG Daishowa




  • Improved stability leads to minimized vibration
  • Greater bending stiffness allows for higher cutting data, hence higher productivity 
  • Enhanced rigidity thanks to simultaneous fit of taper and flange


Use our tooling guidelines below to help you choose between solid and modular assemblies.  


Taper and flange contact with BIG-PLUS

​Tooling guidelines - solid versus modular

​​​​​​​​​ ​ ​ 
Solid assemblies
​​​​​​​​​ ​ ​ ​ ​
Modular assemblies
Small need
​Flexibility High need
Long asse​mblies ​​
​ ​
​​Short gaug​e line

High batch/volume Production Low batch/volume


Product range

Taper size Machine interface adaptor​

Face mill​

Combi Weldon/ISO9766​ CoroChuck™ 930​ ER collet chuck​
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