Overload Clutches Positive Torque Limiters • Friction Torque Limiters • Force Limiters Edition 2021/2022 RINGSPANN® Registered trademark of RINGSPANN GmbH, Bad Hombu

Introduction Introduction Overload Clutches Overview Overload Clutches SIKUMAT®-Torque Limiters Ratcheting SIKUMAT® SC … with screw faces Series SC - Basic version with flange connection Series SCE - with flexible shaft coupling Series SCL - with torsionally rigid shaft coupling Proximity switch for Ratcheting SIKUMAT® with screw faces Ratcheting SIKUMAT® SG … with balls Series SG - Basic version with flange connection Series SGR - with short hub and integral needle bearing Series SGG - with long hub Series SGE - with flexible shaft coupling Ratcheting SIKUMAT® ST … – Backlash free with balls...

SIKUMAT®-Torque Limiters Disengaging SIKUMAT® SR … with single rollers Series SR - Basic version with flange connection Series SRR - with short hub and integral needle bearing Series SRG - with long hub Series SRE - with flexible shaft coupling Synchronous Disengaging SIKUMAT® SB … with double rollers Series SB - Basic version with flange connection Series SBG - with long hub Series SBE - with flexible shaft coupling Series SBL - with torsionally rigid shaft coupling Non-disengaging SIKUMAT® SL … with single rollers Series SL - Basic version with flange connection Series SLR - with short hub...

Introduction Overload Clutches 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...

RIMOSTAT® RSHD

Overview Overload Clutches Overload Clutches Ratcheting Re-engagement Slipping Backlash free Auto. Manually Manually synchron. synchron. after 360° after 360° Consistency of torque limiting over operating period very high SIKUMAT® SC … with screw faces SIKUMAT® SG … with balls Positive Torque Limiters SIKUMAT® ST … Backlash free with balls SIKUMAT® SN … with single rollers SIKUMAT® SA … with double rollers SIKUMAT® SU … Backlash free with balls SIKUMAT® SR … with single rollers SIKUMAT® SB … with double rollers Friction Torque Limiters SIKUMAT® SL … with single rollers RIMOSTAT® RS … with coil...

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 flexible 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 1) Keyway as per DIN 6885, page 1 2) Keyway as per DIN 6885, page 3 Tolerance of keyway width P9 Example for Ordering Type Preset limit torque with proximity switch Torque type

Ratcheting SIKUMAT® SCE with screw faces with flexible shaft coupling Installation must be shut down as soon as torque limiter responds Technical Data Type Engagement travel Dimensions Type 1) Keyway as per DIN 6885, page 1 2) Keyway as per DIN 6885, page 3 Tolerance of keyway width P9 Example for Ordering Type Preset limit torque with proximity switch Torque type

Ratcheting SIKUMAT® SCL with screw faces with torsionally rigid shaft coupling 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

Proximity switch for Ratcheting SIKUMAT® with screw faces Proximity switch with plug connection Attaching plug, 90º, incl. 2 m PVC cable Technical Data 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. Operating voltage: Max. switching current: Internal...

Ratcheting SIKUMAT® SG … with balls 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 Ball Principle 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...