COLLET ER-40 (4-3MM)

It is a precision ER collet used in CNC/NC machines to firmly hold 3–4 mm diameter cutting tools for accurate machining.

Uses:

• Used to hold small diameter drills and end mills securely

• Suitable for CNC milling and NC lathe machining operations

• Ensures strong clamping with minimal tool runout

• Ideal for precision machining of small metal components

• Commonly used with ER-40 collet chucks in CNC and tool holders