Schunk 217933 Hydraulic Chuck Sleeve 16mm Id 20mm Od

Product Description

The SCHUNK 217933 is a hydraulic chuck sleeve designed for use with hydraulic toolholding systems in precision machining applications. This sleeve serves as the interface component between the hydraulic chuck body and the cutting tool shank, transmitting clamping force evenly around the tool for secure, concentric holding. It features a 16 mm inside diameter and a 20 mm outside diameter, with a 24 mm head diameter and a length under head of 1.9882 inches (50.5 mm). Constructed from steel, the 217933 is built to handle the radial clamping pressures generated in hydraulic chuck systems during milling, drilling, and reaming operations.

This sleeve is intended for use in CNC machining centers and similar precision toolholding environments where hydraulic expansion chucks are the preferred workholding method. The 16 mm bore accommodates standard 16 mm shank cutting tools. Machinists and toolroom technicians working in job shops, production facilities, and aerospace or die-mold environments will find this sleeve suited to applications requiring high runout accuracy and vibration damping. Through-coolant is not supported by this sleeve design.

Key Features

• 16 mm inside diameter for compatibility with 16 mm tool shanks
• 20 mm outside diameter fits corresponding hydraulic chuck body bore
• 24 mm head diameter provides positive axial stop and seating surface
• Length under head of 1.9882 inches (50.5 mm) for defined tool projection
• Steel construction for durability under hydraulic clamping loads
• No through-coolant - suitable for external or flood coolant setups

Compatibility

Designed as an OEM-style replacement or spare sleeve for hydraulic chuck systems requiring a 16 mm ID, 20 mm OD sleeve with a 24 mm head diameter.

Installation Notes

Installation and replacement of hydraulic chuck sleeves should be performed by a qualified machinist or toolroom technician familiar with hydraulic toolholding systems. Depressurize the hydraulic chuck fully before removing or inserting any sleeve. Ensure the sleeve bore, chuck body bore, and tool shank are clean and free of burrs or debris before assembly, as contamination can affect clamping force and runout. Follow the chuck manufacturer's torque and pressurization specifications when setting the hydraulic clamping mechanism.