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Ringspann Overload Clutches

Ringspann Overload Clutches ensure equipment safety and durability by disengaging during torque overloads, ideal for heavy-duty machinery and conveyor systems.

Ringspann Sikumat ST

Positive Torque Limiters

Ratcheting – SIKUMAT® SC/SG/ST

Ringspann Sikumat ST
Ringspann Sikumat ST

Features

  • Backlash free in both directions of rotation
  • Compact design
  • Integral ball bearing for supporting the component to be connected
  • Very high response accuracy through the ball principle
  • Simple and backlash free fastening onto shaft with integral cone clamping element
  • Calibrated micro adjustment of torque setting possible, even post-installation

Function

  • When the preset limit torque has been reached the SIKUMAT® ratchets through.
  • Automatic re-engagement of the SIKUMAT® after the overload has been eliminated.
  • The overload can be indicated by a proximity switch. This means that the drive can be switched off immediately or another control function can be activated.

Synchronous Ratcheting – SIKUMAT® SU/SA/SN

Ringspann Sikumat-SN
Ringspann Sikumat-SN

Features

  • Synchronous re-engagement after 360°
  • Integral fixed bearing
  • Driving keyway in the connecting flange for maximum load capacity
  • Calibrated micro adjustment of torque setting possible, even post-installation
  • Cost effective

Function

  • When the preset limit torque has been reached the SIKUMAT® ratchets through.
  • Automatic re-engagement of the SIKUMAT® after the overload has been eliminated.
  • The overload can be indicated by a proximity switch. This means that the drive can be switched off immediately or another control function can be activated.

Disengaging – SIKUMAT® SR

Ringspann Sikumat-SR
Ringspann Sikumat-SR

Features

  • Disengages in case of overload – separation of input and output
  • Integral fixed bearing
  • Keyway in connecting flange for maximum torque capacity
  • Calibrated micro adjustment of torque setting possible, even post-installation
  • Cost effective

Function

  • When the preset limit torque has been reached the SIKUMAT® disengages the input and output.
  • After the overload has been eliminated the SIKUMAT® can be switched on again manually.
  • This means that an axial switching force must be applied to the switching ring.

Synchronous Disengaging – SIKUMAT® SB

Ringspann Sikumat-SN
Ringspann Sikumat-SN

Features

  • High degree of consistency of limit torque over the duration of operation through double roller principle
  • Switching off in case of overload – separation of input and output
  • Synchronous re-engagement after 360°
  • Torques up to 10 000 Nm
  • For shaft diameters up to 125 mm

Function

  • When the preset limit torque has been reached the SIKUMAT® effects a separation of input and output by means of a locking mechanism with integral bearings.
  • Following elimination of the overload manual synchronous re-engagement of the SIKUMAT® to the starting position after 360°.
  • This requires an axial switching force to be applied to the switching ring.

Friction Torque Limiters

RIMOSTAT® Torque Limiters RSHD – for heavy-duty applications

Ringspann RIMOSTAT Torque Limiters RSHD
Ringspann RIMOSTAT Torque Limiters RSHD

Features

  • Better stability of slipping torque than Belleville spring torque limiters over duration of the operating period
  • Adjustment of slipping torque setting according to the number of active springs – not through modification of spring pressure
  • Superb wear-behaviour during high energy-input
  • High temperature resistant

RIMOSTAT® Torque Limiters RS

Ringspann RIMOSTAT Torque Limiters RS
Ringspann RIMOSTAT Torque Limiters RS

Features

  • Particularly suitable in applications with frequent slipping
  • Better stability of slipping torque than Belleville spring torque limiters over duration of the operating ­period
  • Adjustment of slipping torque setting according to the number of active springs – not through modification of spring pressure

Function

  • When the preset slipping torque has been reached the built-in component (e. g. chain wheel) slips.
  • During the slipping process, input and output rotate relative to each other and the preset slipping torque continues to be transmitted.
  • Inherent in the slipping process is a high energy consumption.
  • Re-engagement is not necessary.

Belleville Spring Torque Limiters RT

Ringspann Belleville Spring Torque Limiters RT
Ringspann Belleville Spring Torque Limiters RT

Features

  • Cost effective, simple Torque ­Limiter
  • Adjustment option for pad wear
  • 12 Sizes for slipping torques from 0.5 Nm to 10 000 Nm

Function

  • When the preset slipping torque has been reached the built-in component (e. g. chain wheel) slips.
  • During the slipping process, input and output rotate relative to each other and the preset slipping torque continues to be transmitted.
  • Inherent in the slipping process is a high energy consumption.
  • Re-engagement is not necessary.

Force Limiters

Series PA

RINGSPANN Series-PA
RINGSPANN Series-PA

Features

  • Forces limited in both directions
  • High response accuracy
  • Automatic re-engagement
  • Maintenance-free
  • Robust construction
  • Uncomplex design
  • Easy to build on
  • For disengaging forces up to 140 000 N
  • Disengaging force finely adjustable

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