ER Collet Styles:

ER – Standard Service Collet

• For use in ER collet chucks for drilling, reaming, boring, tapping, and milling.
• Meets DIN 6499-B industry standard.
• Collapse range .0393”(1 mm) maximum.
• Size 11 collapse range .020”(1/2 mm) maximum.
• For higher runout tolerance, refer to high precision collets on page 30.

RER – Sealed Collet

• For use with regular straight shank tools.
• Collet slots are sealed to prevent coolant escape.
• Withstands coolant pressure up to 600 PSI.

Range: Always select collet that the high end of range is the closest larger or equal to cutting tool shank. Collets perform best when “on size”.