Engineering TOOLFLEX®

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35 - 340 Nm

TOOLFLEX® KN metal bellow-type coupling

Metal bellow-type coupling TOOLFLEX KN with integrated clamping system with taper clamping ring hub

TOOLFLEX KN is a metal bellow-type coupling with taper and clamping ring hubs on both sides. It is rotationally symmetrical and thus suitable for high speeds.

The hubs of the metal bellow-type coupling are made of steel, the bellow is made of stainless steel. TOOLFLEX KN provides a high friction torque. The range includes both metal bellow-type couplings with frictionally engaged connections without feather keyway and positive-locking connections with feather keyway.

Types of TOOLFLEX KN metal bellow-type coupling:

  • type S: metal bellow-type coupling with compact bellow with 4 layers
  • type M: metal bellow-type coupling with bellow with 6 layers
  • Backlash-free, torsionally stiff metal bellow-type coupling
  • Integrated clamping system with taper clamping ring hub
  • Positive-locking bellow-hub-connection
  • Optionally available with bellow with 4 layers (type S) or 6 layers (type M)
  • Optimum concentricity properties by symmetric structure
  • Torques from 35 to 340 Nm
  • High friction torques
  • Compensation of axial, radial and angular displacements
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Torsionally stiff and flexible: TOOLFLEX metal bellow-type couplings

TOOLFLEX is a torsionally stiff and flexible metal bellow-type coupling (all-metal coupling) with a bellow made of stainless steel and coupling hubs made of aluminium.
The coupling hubs of our metal bellow-type coupling in size 55 and 65 and as a type KN are made of steel.

The metal bellow ensures optimum compensation of axial, radial and angular displacements with conformal torque transmission. At the same time the geometrical shape of the metal bellow-type coupling provides high torsion stiffness and a low mass moment of inertia. Apart from that it is resistant to media effects and critical operating conditions.

Applications of our metal bellow-type coupling TOOLFLEX: Metal bellow-type coupling for drive technology, automation technology, medical technology, servo drives, packaging technology, machine tools, etc.
For the different applications and mounting conditions of the TOOLFLEX metal bellow-type couplings two different bellow lengths are available.

Metal bellow-type couplings by KTR Systems:

Operating principle of a bellow-type coupling:

The connection between bellow and hubs is made in three different versions: For sizes 5 to 12 the metal bellow is bonded to the hubs. That is why these sizes are permissible for ambient temperatures from -30 °C to +100 °C. For sizes 16 to 45 the bellow-hub-connection is generated by a flanged insert connection which ensures torque transmission of every single bellow layer. The bellow-hub-connection of sizes 55 and 65 is made by a welded connection.

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