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Tool chucks
Tool chuck DIN 69893 HSK

Hollow shank taper tools
For automatic and manual tool change

The new tool chuck generation HSK-32/40/ 50/63/80/100 types ƒ Good torque transmission: the hollow shank taper is held in the receiving
A to F spindle so that torque transmission is possible as a result of friction contact. 2
To prepare an offer, we need your spindle size and possible tool chucks. carrier blocks also engage in the slots at the shank end.
Advantages vis-à-vis steep taper: ƒ Ideal for high rotation speeds: at high rotation speeds the spindle expands
due to centrifugal force. This could cause the steep taper to slip in the spindle
ƒ High rigidity: considerably greater bending strength is achieved with the and jam. This is prevented by the flange. In addition, the clamping elements
same tool sizes as a result of the support at the collar (flange). are pushed outwards by centrifugal force which increases the clamping force.
ƒ Excellent change precision: the flange attachment facilitates axial posi- ƒ Integrated tool system: the hollow shank taper was designed for both
tioning precision in the µm range. The form-fit, tight taper tolerance prevents stationary and rotating tool chucks. This enables the tool holders to be used
any radial run-out. on milling machines and lathes and as modular tools.
Clamping Technology
1 2 1 2

3
Radial nominal rigidity of various Functional principle of the HSK Connecting position with locating faces Clamping situation with locating faces
machine tool interfaces interface ① Spindle
① Spindle ① Tool
① Tool
① Free space
Shell end mill arbours DIN 69893-1 A
With longitudinal groove to DIN 6357
A L1
Form G 2,5
A 25000 rpm
A63 IK
Application: ƒ Nickel-plated (corrosion-resistant and
For holding DIN 841 and 842 shell end mills with dirt-repellent) d1 D
transverse groove.
scope of supply and services:
Execution: With feather key, driving ring and cutter retaining
ƒ With inner channel cooling screw
Tool holding device HSK A63 HSK A63 HSK A63 HSK A63 HSK A63 HSK A63 HSK A63 HSK A63
Form A A A A A A A A
Version Short Short Short Short Short Long Long Long
Arbour Ø d1 (mm) 16 22 27 32 40 16 22 27
Arbour length L1 (mm) 17 19 21 24 27 17 19 21
Outer Ø D (mm) 38 48 58 78 88 38 48 58
Projection length A (mm) 50 50 60 60 60 100 100 100
Surface Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated Nickel-plated
Coolant supply Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial Internal axial
Balancing quality G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25 G 2.5 at 25
555
752
751
753
554
552
553
551
Ident. No.
23744... Unit price, € O. R. O. R. O. R. O. R. O. R. O. R. O. R. O. R.
Tool holding device HSK A63
Form A
Version Long
Arbour Ø d1 (mm) 32
Arbour length L1 (mm) 24
Outer Ø D (mm) 78
Projection length A (mm) 100
Surface Nickel-plated
Coolant supply Internal axial
Balancing quality G 2.5 at 25
Ident. No.
754
23744... Unit price, € O. R.
Prod. group 263
Combined shell end mill arbour DIN 69893-1 A
A L1
Form G 2,5
A 25000 rpm
A63 IK
Application: ƒ Nickel-plated (corrosion-resistant and
For holding milling cutters with transverse and dirt-repellent) d1 D
longitudinal groove. ƒ Precision-ground
Execution: scope of supply and services:
ƒ Case-hardened With feather key, driving ring and cutter retaining
screw
Short version
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