The Ball Principle
The torque is transmitted via balls which are pressed by Belleville springs into v-shaped grooves. The grooves are arranged axially on the output side and radially on the input side, which means that torque can be transmitted backlash free in both directions of rotation. When the preset limit torque has been reached, the groove-ring is displaced. Due to the unsymetrical division of the grooves, re-engagement is effected synchronously after 360°, as soon as the overload has been eliminated. The particular geometry of the grooves lends the SIKUMAT an excellent response accuracy.
Advantages
- Backlash free in both directions of rotation
- Compact design o Integral ball bearing for support 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 postinstallation
- Exchange of current torque limiters possible
Function
- When the preset limit torque has been reached the SIKUMAT ratchets through.
- Following elimination of overload automatic synchronous re-engagement of the SIKUMAT to the starting position after 360°.
- 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.
Types
Series SU - flange design
For attaching chain wheels, belt pulleys, gear wheels etc. Support of the component to be connected directly on the integral ball bearing.
(for dimensions.pdf click download)
Series SUG - with long hub
With long hub for wide components to be connected. Support of the component to be connected directly on the integral ball bearing; additional radial bearing to be provided by the customer.
(for dimensions.pdf click download)
Series SUE - with flexible shaft coupling
For flexible connection of two shafts.
(for dimensions.pdf click download)
Series SUL - with torsionally rigid shaft coupling
For rigid connection of two shafts.
(for dimensions.pdf click download)
Notes
Torque setting
The limit torque can be set at the factory on request. Setting or modification of the limit torque can also be carried out by the customer. See operating instructions for further details.
Proximity switch
The overload can be indicated by a non-contact or a mechanical proximity switch.
Keyway design
The types SU and SUG with bore and keyway are available on request.
Speed Control ESC
The RINGSPANN speed control ESC (Electronic Speed Control) monitors speed deviations and speed differences safely and also under difficult operating conditions. see ESC
