Haimer 40.844.1/4Z.3 Shrink-fit Holder CAT40 1/4 in

Product Description

The HAIMER 40.844.1/4Z.3 is a shrink-fit tool holder adapter engineered for precision machining applications. It features a CAT40 taper shank for direct spindle mounting and accepts a 0.25-inch bore cutting tool via thermal shrink-fit retention. The adapter measures 5.12 inches in projection and includes integrated through-coolant capability with Cool Jet delivery, directing coolant to the cutting zone for improved chip evacuation and tool life. Balanced to 25,000 RPM, it is suited for high-speed machining centers where runout and vibration control are critical. CNC machinists and tooling technicians are the primary installers of this adapter.

This adapter is used on CAT40-spindle vertical and horizontal machining centers in job shop, production, and aerospace environments. The 0.83-inch nose diameter and 1.42-inch clamping depth provide secure tool engagement for small-diameter end mills, drills, and reamers in the 0.25-inch shank size range. The Power Series designation indicates HAIMER's higher-clamping-force shrink-fit geometry, making it appropriate for aggressive cutting strategies where standard holders may allow tool pullout.

Key Features

• CAT40 taper shank for direct spindle interface on standard machining centers
• 0.25-inch bore diameter for 1/4-inch shank tooling retained via thermal shrink fit
• 5.12-inch projection for extended reach into deep features or fixtures
• Through-coolant with Cool Jet delivery directs fluid to the cutting edge
• Balanced to 25,000 RPM for high-speed spindle operation
• 1.42-inch clamping depth and 0.83-inch nose diameter provide rigid tool grip

Compatibility

Designed for use with CAT40-taper spindle machining centers accepting standard V-flange tooling, and compatible with 0.25-inch shank cutting tools used in shrink-fit retention systems.

Installation Notes

Shrink-fit adapters require a dedicated induction heating unit to expand the bore before tool insertion and during tool removal. Power down the machining center and confirm spindle stop before changing tooling. Handle the adapter with appropriate insulated gloves immediately after heating. Verify tool holder runout with a dial indicator after assembly and before production use, per shop quality procedures.