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The KENNAMETAL 2248994 is a slotted hydraulic chuck sleeve designed to reduce toolholder bore diameter for use with smaller-shank cutting tools in hydraulic chucks. With an inside diameter of 5 mm (0.1969 inches) and an outside diameter of 12.7 mm (0.5000 inches), it provides a secure, vibration-damped interface between the tool and the chuck body. The 16 mm (0.6300 inches) head diameter seats properly against the chuck face, and the 40 mm (1.575 inches) length under head accommodates standard reach requirements. Constructed from steel and rated to 1500 psi, this sleeve includes through-coolant capability for directed cutting fluid delivery at the tool tip. It is installed by machinists and toolroom technicians in CNC milling and machining center setups.
This sleeve is suited for precision machining operations where a hydraulic chuck must grip a 5 mm shank tool. Typical applications include finish milling, reaming, and drilling in CNC machining centers where tool runout control and coolant-through capability are required. The slotted design allows the sleeve to flex uniformly under hydraulic clamping pressure, ensuring consistent grip force around the tool shank. It is appropriate for both production and tool room environments.
Designed as an OEM-style reduction sleeve for hydraulic toolholders that accept a 0.5000 inch (12.7 mm) OD sleeve bore and require a 5 mm tool shank interface.
Installation should be performed by a qualified machinist or toolroom technician with the machine spindle stopped and all axis motion disabled. Clean the chuck bore and sleeve exterior thoroughly before insertion to ensure proper seating and accurate runout. Do not exceed the rated clamping pressure of the hydraulic chuck system when torquing the clamping screw. Verify tool shank engagement depth meets the toolholder manufacturer minimum requirements before use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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