KBK-E Series

KBK-E Series

Integrated Ball-bearings freewheel Torque Limiters, with servo ‘spider’ inserts, for connecting two shafts.

The safety couplings for direct drives are a combination of our long term proven and optimized torque limiting systems and a coupling element which can compensate misalignment between the driving and the driven shaft.

Within a wide range users can choose different versions with metal – bellows or servo-inserts (spiders).

For the safety and overload protection of indirect drives we do offer a wide range of torque limiters with integrated ball bearing or bush bearings. Pulleys, sprockets, pinions or customized parts can be assembled directly on the coupling flanges with a high accuracy.

Available in this range:

EKK

EKK – with ‘Clamp-Lok’ Shaft fix Hubs, each End

  • Backlash-Free Torque Limiter / Safety Coupling
  • With clamp hubs
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 4 – 62mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EKI

EKI – with ‘Clamp-Lok’ Shaft fix Hub & INNER Collet

  • Backlash-Free Torque Limiter / Safety Coupling
  • With clamp hub and inner conical hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 4 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EKA

EKA – with ‘Clamp-Lok’ Shaft fix Hub & OUTER Collet

  • Backlash-Free Torque Limiter / Safety Coupling
  • With clamp hub and outer conical hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 4 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EAA

EAA – with OUTER Shaft fix Collets, each End

  • Backlash-Free Torque Limiter / Safety Coupling
  • With outer conical hubs
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EAK

EAK – with OUTER Shaft fix Collet &’Clamp-Lok’ Hub

  • Backlash-Free Torque Limiter / Safety Coupling
  • With outer conical hub and clamp hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 62mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EAI

EAI – with OUTER Shaft fix Collet & INNER Collet

  • Backlash-Free Torque Limiter / Safety Coupling
  • With outer conical hub and inner conical hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EPP

EPP – with Shaft fix Hub, Keyways each End

  • Backlash-Free Torque Limiter / Safety Coupling
  • With keyways
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EPK

EPK – with Shaft fix Hub + Keyway & ‘Clamp-Lok’ Hub

  • Backlash-Free Torque Limiter / Safety Coupling
  • With keyway and clamp hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 62mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EPI

EPI –  with Shaft fix Hub + Keyway & INNER Collet

  • Backlash-Free Torque Limiter / Safety Coupling
  • With keyway and inner conical hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EPA

EPA – with Shaft fix Hub + Keyway & OUTER Collet

  • Backlash-Free Torque Limiter / Safety Coupling
  • With keyway and outer conical hub
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 55mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EKP

EKP – with ‘Clamp-Lok’ Shaft fix Hub & Hub + Keyway

  • Backlash-Free Torque Limiter / Safety Coupling
  • With clamp hubs and keyway
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 4 – 50mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
EAP

EAP – with OUTER Shaft fix Collet  & Hub + Keyway

  • Backlash-Free Torque Limiter / Safety Coupling
  • With outer conical hub and keyway
  • Torque Range: 3 – 500Nm
  • Outer Diameter: 49 – 129mm
  • Bore Diameters: 6 – 50mm
  • Vibration dampening, compensates shaft misalignment, pluggable!
  • Different spiders available for modifying the coupling characteristics.
...MORE on Overload/Safety Couplings

'KBK' OVERLOAD PROTECTION SAFETY Clutch-Couplings

'KBK' Overload Protection Clutch- or, Safety- Coupling Combination Connection Units present a product, which is continually increasing in importance in today's era of advancing automation. Compared to alternative Overload Protection possibilities, such as an electronic 'cut-off' device, or the classic Friction-Clutch hub, these Combination Units offer a number of advantages. The distinguishing feature is their extremely short re-action times, within milli-seconds, which represents an almost immediate 'cut-off' of the torque transmission and, thus, protection for man and machine in a collision course situation.

Indeed, personal injury and extensive 'break-down' times, with their corresponding machine repair costs, can be avoided by installing these Combination Units.

Furthermore, these Units are unaffected by environmental influences, such as temperature changes, or being in contact with oils and greases, which have an especially negative effect on the function of friction-clutch hubs.

By means of definitive pre-tensioning across disc springs with digressive spring characteristics, every overload torque can be preset precisely, to a very high function-accuracy. Upon reaching this overload torque setting, the coupling disengages at the clutch and the torque transmission is interrupted, immediately. In addition, this disengaging clutch-plate movement process can be coupled to a mechanical or, electronic switch, which brings the drive to a halt.

After dropping below the overload torque setting, further rotation of the coupling Unit (at low speed) returns the sprung clutch multiple hardened & polished 'caged' steel balls into their corresponding V-groove detents to re-engage automatically and take up the torque transmission again. Rotation may be in either direction. 'Asymmetrically' arranged balls/cage bores & detents options only allow re-engagement after a full 360 ° rotation, whereas the 'symmetric' arrangement options offer multiple re-engagement positions. There are two overload torque setting ranges offered for each clutch-coupling size, ranging from 1 to a maximum 1,600Nm

To the overload protection function benefit arising from these clutch-coupling types, each according to requirement and execution, the positive characteristic features of a conventional metal bellows- or, flexible 'spider'- coupling is added, namely shaft misalignment compensation, as well as enormously high torsional rigidity, minimal reaction forces and backlash-free torque transmission.

With the flexible 'spider' variation, accommodation of shocks and vibrations, as well as electrical isolation, is achieved, in addition.

Alternatively, a single or, double support bearing design for direct Pulley, Gear or Flange mounting is also offered in the range.

The simple construction, with only few and single-part components - thereby ensuring minimal dimensions and moments of inertia - facilitates a problem-free integration into every drive line, as well as an uncomplicated installation and dismantling, without leaving any marks on the components to be connected.

Application areas for Overload Protection Safety Clutch-Couplings are found wherever there is a danger of a 'crash' or, of an overload generally; e.g., in high dynamic drives, Machine Tools, Textile- and CNC- controlled Machines, Servo Drives and many other areas in the dynamics.

Back to Torque Limiters

Poggi
KBK
Inkoma
Capton Division
Lonertia