Schunk 217965 Hydraulic Chuck Sleeve 7/16 in Id 3/4 in Od

Product Description

The SCHUNK 217965 is a hydraulic chuck sleeve designed to adapt and secure tooling within hydraulic chuck systems on CNC machining centers and milling machines. Made from steel, this sleeve features a 7/16 inch (0.4375 inch) inside diameter and a 3/4 inch (0.7500 inch) outside diameter, with a length under head of 1.9882 inches. It weighs 0.44 pounds. Hydraulic chuck sleeves like this one allow technicians to run tools with smaller shanks in larger-bore hydraulic chucks, maintaining concentricity and clamping force without requiring a full chuck change. Installation is performed by qualified machine tool operators or CNC setup technicians.

This sleeve is suited for use in precision machining environments where hydraulic chucks are the primary workholding method. It is applicable in both job shop and production settings running milling, drilling, or reaming operations that require a reduction insert to accommodate smaller-diameter tool shanks. The 7/16 inch bore suits tools in that standard shank size, and the 24.00 mm head diameter ensures positive seating within the chuck body. Through-coolant is not supported by this sleeve.

Key Features

• Steel construction for durability and rigidity under machining loads
• Inside diameter of 7/16 inch (11.11 mm) accommodates standard smaller tool shanks
• Outside diameter of 3/4 inch (19.05 mm) fits corresponding hydraulic chuck bores
• Length under head of 1.9882 inches (50.50 mm) for proper tool projection and seating
• Head diameter of 24.00 mm for secure, positive chuck engagement
• No through-coolant path - suited for dry or external coolant applications

Compatibility

Designed as an OEM-style reduction sleeve for hydraulic chuck systems accepting a 3/4 inch OD sleeve with a 7/16 inch ID bore.

Installation Notes

Installation is performed by CNC setup technicians or machine tool operators. Always power down and de-energize the machine before removing or installing chuck tooling. Ensure the chuck bore and sleeve exterior are clean and free of chips or debris before seating the sleeve. Consult the hydraulic chuck manufacturer's documentation for proper clamping pressure specifications.