Haimer 40.842.5/16Z.4 Shrink-fit Holder CAT40 5/16 in

Product Description

The HAIMER 40.842.5/16Z.4 is a shrink-fit tool holder adapter designed for CNC machining centers that use a CAT40 taper shank interface. It accepts tools with a 0.3125 inch (5/16 inch) bore diameter and provides a 6.3 inch projection with a 0.83 inch nose diameter. The adapter features through-coolant capability with Cool Jet and resealable bores, making it suitable for high-speed and high-precision milling, drilling, and boring operations. Balanced to 25,000 RPM, this holder is installed by CNC machinists and toolroom technicians in production and job-shop environments.

This adapter is intended for use in CAT40 spindle tooling systems on vertical and horizontal machining centers. With a 1.42 inch clamping depth and a compact 0.83 inch nose diameter, it accommodates close-clearance applications and deep-reach tooling setups. The through-coolant design supports chip evacuation and tool life in demanding cutting conditions. It is well suited for shops running tight-tolerance work where runout control and high-RPM stability are priorities.

Key Features

• CAT40 taper shank for direct spindle mounting on standard machining centers
• 0.3125 inch (5/16 inch) bore diameter accepts a wide range of round-shank cutting tools
• 6.3 inch projection enables deep-reach tooling applications
• Through-coolant with Cool Jet technology for directed coolant flow at the cutting edge
• Resealable bores allow coolant port management when through-coolant is not needed
• Balanced to 25,000 RPM for high-speed machining stability

Compatibility

Designed for use with CAT40 spindle tooling systems on machining centers equipped with a standard CAT40 taper interface. Accepts 0.3125 inch shank cutting tools within the specified clamping depth of 1.42 inches.

Installation Notes

Installation requires a HAIMER-compatible shrink-fit induction heating unit to expand the bore for tool insertion and release. Power down and de-energize the machine spindle before mounting or removing the holder. Follow the machining center manufacturer torque specifications for drawbar pull force when seating the CAT40 taper. Verify RPM balance rating does not exceed machine spindle limits before operation.