Schunk 217380 Hydraulic Chuck Sleeve 3/8 Id 1/2 Od Steel

Product Description

The SCHUNK 217380 is a hydraulic chuck sleeve designed for use in hydraulic toolholding systems on CNC machining centers and similar precision machine tools. The sleeve features a 3/8 inch (0.3750 inch) inside diameter and a 1/2 inch (0.5000 inch) outside diameter, with a length under head of 1.7717 inches. Constructed from steel, this sleeve provides the structural integrity and dimensional consistency required for repeatable, high-precision clamping of cutting tools. It is installed by machinists and toolroom technicians maintaining hydraulic chuck assemblies.

This sleeve is suited for use in hydraulic expansion chucks where controlled radial clamping force is applied to secure straight-shank cutting tools. Typical applications include milling, drilling, and reaming operations in production and job-shop environments. The 3/8 inch bore accommodates standard round-shank tooling at that diameter, while the steel construction stands up to the clamping pressures inherent in hydraulic chuck systems.

Key Features

• 3/8 inch (0.3750 inch) inside diameter for standard straight-shank tooling
• 1/2 inch (0.5000 inch) outside diameter for proper chuck body fitment
• 1.7717 inch length under head for consistent tool projection
• Steel construction for durability under hydraulic clamping pressure
• No through-coolant bore, simplifying installation in standard hydraulic chuck applications
• 16.50 mm head diameter for secure seating against the chuck face

Compatibility

Designed as an OEM-style replacement sleeve for hydraulic chuck assemblies requiring a 3/8 inch ID by 1/2 inch OD steel sleeve configuration.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Disengage all machine drives and release hydraulic pressure in the chuck system before removing or installing the sleeve. Ensure the sleeve bore and mating chuck surfaces are clean and free of chips or debris before assembly to maintain concentricity and clamping performance. Follow the machine tool manufacturer guidelines for hydraulic chuck service procedures.