Ratcheting SIKUMAT® SC RINGSPANN
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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 the toothed flanks of the SIKUMAT® retain their surface contact even during the torque disengaging process. This characteristic gives the SIKUMAT® an extremely high resistance against wear and therefore a long operating life. Function • When the preset limit torque has been reached the SIKUMAT® ratchets. • After elimination of the overload the SIKUMAT® re-engages automatically. • The overload can be indicated by the special proximity switch for the ratcheting SIKUMAT® with screw faces, thus either causing the drive to be switched off instantly or another control function to be activated. Face gear The toothed flanks maintain surface contact only when engaged. Screw face The toothed flanks maintain surface contact even during the disengaging.

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...

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:...