BT50 Hydraulic Expansion Chuck (AD) (JD)

K101036296162826 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: BT (MAS 403)
Shank & Holder: BT50

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 G2.5 @ 25,000 rpm
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

Availability
Type of Product	Hydraulic Expansion Chuck
Interface	BT (MAS 403)
Shank & Holder	BT50
Clamping Ø	Ø12, Ø20, Ø32, 1/2", 3/4", 1-1/4"
Execution	AD, JD
Standard	DIN ISO 7388-2 / JIS B 6339
Coolant Supply	Central (AD)
Balancing Grade	G2.5 @ 25,000 rpm

Dimension table

6 article nos.

6 article numbers

Item name	dmm	D1mm	G	Lmm	L1mm	Weightkg
BT50 HC12S 069 AD 2.5G 25000 SL	12	42	M10	69	40	4.136
BT50 HC20S 083 AD 2.5G 25000 SL	20	50	M16	83	42	4.316
BT50 HC32S 090 AD 2.5G 25000 SL	32	72	M16	90	55	4.914
BT50 HC1/2''S 069 AD/ 2.5G 25000 SL	1/2"	42	M10	69	40	—
BT50 HC3/4''S 083 AD/ 2.5G 25000 SL	3/4"	50	M16	83	42	—
BT50 HC1-1/4''S 090 AD/ 2.5G 25000 SL	1-1/4"	72	M16	90	55	—

Need a modified version? We build to print.

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