Collet FORTIS ER32 FI 18 - 17 DIN6499 — ER32 tool holder collet, FI 18–17 fit

FORTIS ER32 FI 18 - 17 DIN6499 is an ER32 collet designed to provide concentric, reliable clamping for cutting tools and tool shanks with an FI 18–17 fit. Made to match the DIN6499 specification, this collet is intended for use in ER32 tool holders where accurate tool retention and repeatability are required for milling, drilling and general machining tasks in workshop and CNC environments.

Advantages

The collet delivers uniform radial clamping force that helps maintain concentricity and minimizes runout. Its compatibility with ER32 tool holders and the FI 18–17 fit enables straightforward installation and interchangeability with standard ER collet systems. The construction supports stable tool retention under typical cutting loads, contributing to dimensional accuracy and consistent machining performance.

Suitable for

• Holding solid carbide, HSS and other indexable tool shanks that match the FI 18–17 fit.
• Milling, drilling and light to medium machining operations in workshop and industrial CNC machines.
• Applications where concentric clamping and repeatable tool positioning are required.

When it may not be suitable

This collet is intended specifically for tools with an FI 18–17 fit and ER32 tool holders; it will not properly secure tools with different shank diameters or nonstandard fits. For heavy-duty machining with very high cutting forces or where extended clamping length is required, a different clamping system or a larger collet size may be more appropriate.

Key specifications

• Collet system: ER32
• Fit type: FI 18–17 (DIN6499 compatibility)
• Function: Concentric clamping for tool shanks
• Typical applications: Milling, drilling and general machining
• Material characteristics: Designed for standard workshop and CNC use (steel construction typical for ER collets)

How to use

Insert the collet into a compatible ER32 tool holder and ensure it seats correctly in the nut or holder body. Insert the tool shank with the FI 18–17 fit into the collet, then tighten the holder nut to the manufacturer-recommended torque to achieve proper clamping force. Verify concentricity and runout after installation and recheck torque after initial machining to account for settling. Follow standard safety procedures when installing and removing collets and tools.

What to consider before purchase

• Confirm the tool shank diameter and fit match FI 18–17 specification.
• Ensure your tool holder is an ER32 type compatible with DIN6499 collets.
• Consider the machining forces and whether ER32 clamping capacity suits your application.

Usage recommendations

Use with properly rated ER32 holders and appropriate torque settings. Regularly inspect the collet and holder for wear, clean mating surfaces before assembly, and replace the collet if signs of deformation or excessive runout appear to maintain machining accuracy.