Synchronous Ratcheting SIKUMAT with double rollers

The Double Roller Prinziple

The torque is transmitted via six pairs of rollers which are pressed by coil springs into detents.When the preset limit torque has been reached, the rollers move against the spring force up the sloping surface and disengage. This characteristic combined with the particular geometry of the detents provide a high degree of consistancy to the limit torque of the SIKUMAT over the duration of the operating period. Re-engagement is effected synchronously after 360º due to the asymmetrical division of the detents.

Advantages

• High degree of consistency of limit torque over the duration of operation through double roller principle 
• Synchronous re-engagement after 360º 
• Torques up to 10 000 Nm o For shaft diameters up to 125 mm 
• Protection against unauthorised adjustment of the limit torque

Function

•  When the preset limit torque has been reached the SIKUMAT ratchets. 
• Following elimination of overload automatic synchronous re-engagement of the SIKUMAT to the starting position after 360º. 
• 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.

Series

Series SA - flange design

For attaching chain wheels, belt pulleys, gear wheels etc.   (for dimensions.pdf click download)

Series SAG - with long hub

With long hub for wide components. Plain bearings are not included in delivery (for dimensions.pdf click download)

Series SAE - with flexible shaft coupling

For flexible connection of two shafts. The flexible elements are oil-proof. (for dimensions.pdf click download)

Series SAL - with torsionally rigid shaft coupling

For torsionally rigid connection of two shafts. Possibility to compensate for large radial and angular displacements. (for dimensions.pdf click download)

Notes

Torque setting The limit torque is normally set at the factory.Setting or modification of the limit torque can also be carried out by the customer but no unauthorised adjustment can be carried out by the machine operator. See operating instructions for further details.

Proximity switch The overload can be indicated by a non-contact or a mechanical proximity switch.

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