Article no.: 302862

Heavy-duty chuck BT 50

Brand: NT TOOL
Balance quality G at rotational speed G 6.3 at 15,000 rpm
Arbor standard JIS B6339
Arbor standard ISO 7388-2
Machining strategy HPC
Through-coolant yes
Concentricity ≤ 5
Shape AD

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Heavy-duty chuck BT 50

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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.

  • Clamping force up 1000 Nm at ⌀ 20, 4000 Nm at ⌀ 32.

Version - image:

Internal axial recesses effectively prevent the tool slipping.
High radial stiffness due to repeatable clamping accuracy against a flat face, which prevents misalignment and ensures a high accuracy of machining, coupled with long tool life.
T-slots take up the oil and grease, so that reliable torque transmission is achieved.
Absolutely smooth running of the clamping nut.


  • 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:

C wrench No. 628400.
Pull studs No. 308760 − 308795.
Collets No. 309575 − 309576.

Technical Data

BT 50
Arbor standard
JIS B6339; ISO 7388-2
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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