Ø25 Shank Hydraulic Expansion Chuck

K102616366301272 article numbers

High Clamping Force
Runout ≤ 0.003 mm

A hydraulic expansion chuck that clamps the shank with a uniform oil film. One hex screw sets the pressure, and the film damps chatter that a rigid holder would pass straight into the cutting edge.

Type of Product: Hydraulic Expansion Chuck
Interface: Cylindrical Shank
Shank & Holder: Ø25 Shank
Clamping Ø: Ø25
Standard: Ground cylindrical shank
Coolant Supply: Central

Order number

2 articles match

Select the dimensions below to find your order number.

Diameter D1

D1 · mm

Balanced Balanced to G2.5Catalogue Volume 1, p. 128

Description

A hydraulic expansion chuck that clamps the shank with a uniform oil film. One hex screw sets the pressure, and the film damps chatter that a rigid holder would pass straight into the cutting edge.

Quality assurance

High Clamping Force

Runout ≤ 0.003 mm
Excellent Damping
Balanced Balanced to G2.5
Made to Order

Features

Runout under 0.003 mm at 2.5× diameter, repeatable over the tool life
Clamps and releases with a single hex key — no heating, no external equipment
Oil film raises tool life by up to 30% in reaming and finish milling
Reduction sleeves take the clamping range down without loss of accuracy

Technical specifications

Type of Product	Hydraulic Expansion Chuck
Interface	Cylindrical Shank
Shank & Holder	Ø25 Shank
Clamping Ø	Ø25
Standard	Ground cylindrical shank
Coolant Supply	Central
Balancing Grade	Balanced to G2.5
Availability	Made to Order

Dimension table

2 article nos.

2 article numbers

Item name	Article no.	dmm	D1mm	D2mm	G	h	Lmm	L1mm	L2mm	Weightkg	Download
DIA 25 HC12 L049		25	12	52	M18	17.5	49	35.5	19.5	—
DIA 25 HC16 L056		25	16	56	M18	17.5	56	40	19.5	0.526

Need a modified version? We build to print.

Special gauge lengths, clamping diameters and interfaces — engineered and manufactured in-house at Pune.