BT50 Hydraulic Expansion Chuck (FCC-AD+B) (JD/JF)

K101036293382556 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	FCC (face coolant), AD+B, JD, JF
Standard	DIN ISO 7388-2 / JIS B 6339
Coolant Supply	Face through coolant (FCC)
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 FCC AD+B 2.5G 25000 SL	12	42	M10	69	40	4.8
BT50 HC20S 083 FCC AD+B 2.5G 25000 SL	20	50	M16	83	42	4.34
BT50 HC32S 090 FCC AD+B 2.5G 25000 SL	32	72	M16	90	55	4.996
BT50 HC1/2''S 069 FCC AD+B/2.5G 25000 SL	1/2"	42	M10	69	40	—
BT50 HC3/4''S 083 FCC AD+B/2.5G 25000 SL	3/4"	50	M16	83	42	—
BT50 HC1-1/4''S 090 FCC AD+B/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.