138 mm Round Chucks

Our Most Popular Chuck

Our 138 mm round chucks easily mount in custom fixture designs, and their versatility makes them our best seller. Their mid-size diameter fit most applications. They are easy to integrate because of their top side mounting. Additional options are also available such as timing notches and stainless steel body versions.

Features & Benefits
  • Uses system 40 clamping knobs
  • Mid-sized diameter fits most applications
  • Top side mounting for ease of integration
  • Choose from air connections at bottom or side
  • Optional timing notch in face of chuck
  • Stainless steel body option (ESM 138-SS)