KBT30 Hydraulic Expansion Chuck (AD) (JD)

K1031362961628318 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: KBT (MAS 403)
Shank & Holder: KBT30
Clamping Ø: Ø6, Ø8, Ø10, Ø12, Ø14, Ø16, Ø18, Ø20, 1/4", 5/16", 3/8", 1/2", 5/8", 3/4"
Execution: AD, JD
Standard: DIN ISO 7388-2 / JIS B 6339

Order number

18 articles match

Select the dimensions below to find your order number.

Clamping diameter

d · mm

Thread

Gauge length

L · mm

Balanced G2.5 @ 25,000 rpmCatalogue Volume 1, p. 30

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
In Stock

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	KBT (MAS 403)
Shank & Holder	KBT30
Clamping Ø	Ø6, Ø8, Ø10, Ø12, Ø14, Ø16, Ø18, Ø20, 1/4", 5/16", 3/8", 1/2", 5/8", 3/4"
Execution	AD, JD
Standard	DIN ISO 7388-2 / JIS B 6339
Coolant Supply	Central (AD)
Balancing Grade	G2.5 @ 25,000 rpm

Dimension table

18 article nos.

18 article numbers

Item name	dmm	D1mm	D2mm	G	Lmm	L1mm	L2mm	Weightkg
KBT30 HC12S 069 2.5G 25000 SL	12	42	—	M10	69	40	—	0.874
KBT30 HC20S 090 2.5G 25000 SL	20	50	—	M16	90	42	—	1.258
KBT30 HC1/2''S 069 2.5G 25000 SL	1/2"	42	—	M10	69	40	—	—
KBT30 HC3/4''S 090 2.5G 25000 SL	3/4"	50	—	M16	90	42	—	—
KBT30 HC06 50.8 2.5G 25000 SL	6	26	45	M5	50.8	37	12	0.64
KBT30 HC08 50.8 2.5G 25000 SL	8	28	45	M6	50.8	37	12.5	0.626
KBT30 HC10 50.8 2.5G 25000 SL	10	30	45	M8	50.8	41	13	0.634
KBT30 HC12 50.8 2.5G 25000 SL	12	32	45	M8	50.8	46	14	0.62
KBT30 HC14 090 2.5G 25000 SL	14	34	45	M8	90	46	45	0.938
KBT30 HC16 090 2.5G 25000 SL	16	38	45	M8	90	49	50	0.976
KBT30 HC18 090 2.5G 25000 SL	18	40	45	M8	90	49	50	0.986
KBT30 HC20 090 2.5G 25000 SL	20	42	45	M8	90	51	50	1.014
KBT30 HC1/4'' 50.8 2.5G 25000 SL	1/4"	26	45	M5	50.8	37	12	—
KBT30 HC5/16'' 50.8 2.5G 25000 SL	5/16"	28	45	M6	50.8	37	12.5	—
KBT30 HC3/8'' 50.8 2.5G 25000 SL	3/8"	30	45	M8	50.8	41	13	—
KBT30 HC1/2'' 50.8 2.5G 25000 SL	1/2"	32	45	M8	50.8	46	14	—
KBT30 HC5/8'' 090 2.5G 25000 SL	5/8"	38	45	M8	90	49	50	—
KBT30 HC3/4'' 090 2.5G 25000 SL	3/4"	42	45	M8	90	51	50	—

Need a modified version? We build to print.

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