Article no.: 300785

Heavy-duty chuck SK 40

Brand: NT TOOL
Concentricity ≤ 5
Balance quality G at rotational speed G 6.3 at 15,000 rpm
Shape AD
Machining strategy HPC
Arbor standard ISO 7388-1

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Heavy-duty chuck SK 40

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  • Low friction due to needle bearings.
  • Protected with anti-corrosion coating.
  • Dust-tight and watertight.
  • Very high clamping force prolongs tool life and improves surface quality.
  • Flexible clamping range by means of collets.

  • Centred tool clamping with optimum concentricity.
  • Internal coolant feed.


  • Long tool life
  • Vibration damping properties
  • High stability due to strengthened clamping nut.


For clamping tools with plain shanks.

Supplied with:

Clamping nut.

Optional extras:

Pull studs No. 308600 − 308806.
Collets No. 309575 − 309576.

Technical Data

SK 40
Arbor standard
ISO 7388-1
Balance quality G at rotational speed
G 6.3 at 15,000 rpm
≤ 5 µm
Machining strategy
Type of product
Heavy-duty chuck

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