Overload Clutches Positive Torque Limiters • Friction Torque Limiters • Force Limiters Edition 2023/2024 RINGSPANN® Registered trademark of RINGSPANN GmbH, Bad Hombu

Issue 05/2023 • Technical details subject to change without notice. SIKUMAT® Registered Trademarks of RINGSPANN GmbH, Bad Homburg

The more comprehensive the automation of machines and installations, the safer their operational function needs to be. Blockages or overloads should never be cause for the destruction of operationally important components. Stoppages must be kept to a minimum so that the production process continues as quickly as possible and without costly repairs. After all, shorter downtimes mean higher productivity. RINGSPANN Overload Clutches are mechanical safety devices which disconnect the output from the input when a preset limit value has been reached. Thus they protect against damage and stoppage times...

RIMOSTAT® RSHD

* When the preset limit torque has been reached, a limit sensor indicates the overload. There is no interruption of the torque transmission.

Adjustable limit torque or slipping torque [Nm] Robustness high Robustness high

Ratcheting SIKUMAT® SC … with screw faces Advantages • Excellent robustness through surface contact during the disengaging process – therefore maximum life • Fully enclosed with integral bearing – therefore maintenance-free • Adjustment of limit torque setting according to the number of active springs – not through modification of spring pressure The Screw Face Principle Torque transmission is effected through screwshaped radial serrations in the input and output part, which are pressed together by spring force. Like the thread sides of a screw have edge contact with the nut during turning, so...

Ratcheting SIKUMAT® SC … with screw faces Types Series SC - Basic version with flange connection For attaching chain wheels, belt pulleys, gear wheels etc. Bearing of attached component on the shaft to be provided by the customer. Series SCE - with flexible shaft coupling For flexible connection of two shafts. The flex ible elements are oil-proof. Series SCL - with torsionally rigid shaft coupling For torsionally rigid connection of two shafts. Possibility to compensate for large radial and angular displacements. Notes Torque setting Proximity switch Normally the limit torque is set at the factory....

Ratcheting SIKUMAT® SC with screw faces Basic version with flange connection Z = number of tapped holes G on pitch circle T · Installation must be shut down as soon as torque limiter responds Technical Data Type Dimensions Type Engagement travel 1) Max. bore diameter for keyways as per DIN 6885, p. 1 2) Max. bore diameter for keyways as per DIN 6885, p. 3 Tolerance of keyway width P9 Example for Ordering Type Preset limit torque with proximity switch Torque type

Ratcheting SIKUMAT® SCEwith screw faceswith flexible shaft coupling Technical Data Torque type End number

Ratcheting SIKUMAT® SCLwith screw faceswith torsionally rigid shaft coupling 12-1 Installation must be shut down as soon as torque limiter responds Technical Data Torque type End number

Effect The proximity switch's response to an overload is to react on the switching disc located internally. During normal operation the proximity switch is closed, the yellow LED is illuminated. The switching disc moves as the preset limit torque is reached. The proximity switch opens and the yellow LED goes out. A speed-dependent switching sequence is triggered at the output end of the limit sensor. Output: PNP-Transistor Internal power consumption: 10 mA The proximity switch is supplied with an aluminum support bracket which is fastened with 2 screws M 6 according to the drawing. The fastening...

Advantages • Very high response accuracy through the ball principle • Integrated fixed bearing • Keyway in connecting flange for maximum load capacity • Calibrated micro adjustment of torque setting possible, even post-installation • Cost effective The torque is transmitted via balls which are pressed into detents via Belleville springs. When the preset limit torque has been reached the balls rise out of their seatings and slot into the nearest respective detent - until the overload has been eliminated. This characteristic, together with the special geometry of the detent gives the SIKUMAT® a...

Ratcheting SIKUMAT® SG … with balls Types Series SG - Basic version with flange connection For attaching chain wheels, belt pulleys, gear wheels etc. Bearing of attached component on the shaft to be provided by the customer. Series SGR - with short hub and integral needle bearing With short hub and needle bearing for narrow components to be connected Series SGG - with long hub With long hub for wide components to be connected. Bearing of the attached component in the form of plain or needle bearing to be provided by the customer. Series SGE - with flexible shaft coupling For flexible connection...

Ratcheting SIKUMAT® SGwith ballsBasic version with flange connection Technical Data Torque type

Ratcheting SIKUMAT® SGRwith ballswith short hub and integral needle bearing Technical Data Torque type

Ratcheting SIKUMAT® SGGwith balls with long hub Technical Data Torque type

Ratcheting SIKUMAT® SGEwith ballswith flexible shaft coupling Technical Data Torque type End number

Advantages • 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 The Ball Principle - Backlash free The torque is transmitted via balls which are pressed 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...