Article no.: 302027 20

Hydraulic clamping chuck short, version HT 20 mm

Brand: HOLEX
Machining strategy HPC
Shape ADB
Concentricity ≤ 3
Machining strategy HSC
Balance quality G at rotational speed G 2.5 at 20,000 rpm
Arbor standard ISO 7388-1

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on request
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  • Very high total rigidity due to optimised design.
  • With Balluffchip bore.
  • Axial length adjustment available (travel 10 mm).
  • Flexible due to the use of reducing sleeves.


  • For drilling, reaming and for light and heavy-duty machining when milling.
  • Maximum transmissible torque 550 Nm, version HT (High Torque).
  • Ideal damping characteristics, resulting in optimum surface finishes, increased tool life and spindle protection.

Optional extras:

Pull studs (PS) No. 308600 − 308806. PS pull stud wrenches No. 308820 – 308835, Sleeves No. 302135 − 302180.


V = Maximum adjustment range!
Caution in the case of extra-long tools and TPC machining.

Technical Data

Clamping ⌀ D1
20 mm
SK 40
Arbor standard
ISO 7388-1
Balance quality G at rotational speed
G 2.5 at 20,000 rpm
≤ 3 µm
Machining strategy
Overhang dimension A
64.5 mm
External ⌀ D
49.5 mm
Reach L1
45.5 mm
suitable reducing adapter
302160; 302165; 302150; 302155
Type of product
Hydraulic clamping chuck

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