Ø20 Shank Hydraulic Expansion Chuck

K101606422361276 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: Ø20 Shank
Clamping Ø: Ø20
Standard: Ground cylindrical shank
Coolant Supply: Central

Order number

6 articles match

Select the dimensions below to find your order number.

Clamping diameter

D · mm

Balanced Balanced to G2.5Catalogue Volume 1, p. 129

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	Ø20 Shank
Clamping Ø	Ø20
Standard	Ground cylindrical shank
Coolant Supply	Central
Balancing Grade	Balanced to G2.5
Availability	Made to Order

Dimension table

6 article nos.

6 article numbers

Item name	dmm	Dmm	D1mm	D2mm	G	Lmm	L1mm	L2mm	L3mm	Weightkg
DIA20 HC06 L 150	20	6	16	31.5	M5	150	37	54	100	0.555
DIA20 HC08 L 150	20	8	18	31.5	M5	150	37	54	100	0.502
DIA20 HC10 L 150	20	10	20	31.5	M6	150	41	54	100	0.516
DIA20 HC12 L 150	20	12	25	31.5	M6	150	46	100	100	0.604
DIA20 HC16 L 150	20	16	27.5	31.5	M10	150	49	60	100	0.664
DIA20 HC20 L 150	20	20	31.5	31.5	M10	150	51	100	100	0.618

Need a modified version? We build to print.

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