Shrink discs
The hydraulically tensionable shrink discs are a safe and quick connection between shaft and hub. They are particularly suitable for assembly on test benches and repetitive clamping operations. The shrink disc requires little pressure for clamping, allows maintenance and repair work to be carried out by the customer and the inner ring can be adapted to different sizes.
The 2-part shrink discs (displacement-controlled) are external clamping elements consisting of a pressure ring and a sleeve. By tightening the clamping screws with a specified screw tightening torque, the pressure ring is pulled axially onto the sleeve. The use of conical surfaces reduces the inner diameter of the sleeve, which applies a radial clamping force to the hollow shaft. The clamping force applied by the shrink disc connection creates a frictional connection at the contact surfaces between the shaft and hub.
Downloads
Shaft-hub connections general catalogue(14378 KB)
The 2-part shrink disc (torque-controlled) is an external clamping element consisting of a pressure ring and a sleeve. By tightening the clamping screw with the specified screw tightening torque, the pressure ring is pulled axially onto the sleeve. By using conical surfaces, the inner diameter of the sleeve is reduced so that a radial clamping force is applied to the hollow shaft. The clamping force applied by the shrink disc connection creates a frictional connection at the contact surface between the shaft and hub.
The 3-part shrink discs are external clamping elements and consist of a pressure ring with thread, a pressure ring with through holes and a slotted inner ring. By tightening the clamping screws with the specified tightening torque, the two pressure rings of the 3-part shrink disc move towards each other on the slotted inner ring. The use of conical surfaces reduces the inner diameter of the inner ring, which applies a radial clamping force to the hollow shaft. The applied clamping force of the shrink disc connection creates a frictional connection at the contact surfaces between the shaft and hub.
Frequently Asked Questions (FAQ)
What is a shrink disc and what is it used for?
A shrink disc is a detachable machine component designed to provide a backlash-free shaft-hub connection. It transmits torque and forces via a positive connection and is particularly suitable for industrial drives and mechanical engineering applications.
What are the advantages of a shrink disc over a keyed joint?
Shrink discs enable a backlash-free, force-fit connection between the shaft and the hub. Unlike keyed connections, there are no notch effects caused by grooves in the shaft. Furthermore, shrink disc connections can be loosened again during maintenance work.
How is a shrink disc fitted?
During assembly, the shrink disc is fitted onto the designated shaft and hub areas and tightened using the clamping screws. This presses the hub radially onto the shaft, creating a positive-lock connection. To ensure reliable operation, the manufacturer’s specified manufacturing dimensions, fits, assembly and tightening torques must be observed.
How do I choose the right shrink disc?
The selection depends, amongst other things, on the shaft and hub diameters, the torque to be transmitted, the forces involved and the available space. To ensure correct sizing, the technical requirements of the specific drive must be taken into account.
Can shrink discs also be used for high torques?
Yes. Shrink discs are designed to transmit high torques and forces and are therefore frequently used in industrial drives and machinery. The appropriate size and design depend on the specific operating conditions and the loads to be transmitted.
Are shrink discs suitable for maintenance and the procurement of spare parts?
Yes. The detachable shaft-hub connection allows for relatively straightforward dismantling of drive components. This can simplify maintenance work and offer advantages when sourcing spare parts. To find a suitable replacement, it is particularly important to know the size, the shaft and hub diameters, and the technical requirements of the application.
© Copyright Lütgert & Co. GmbH | Friedrichsdorfer Straße 48 | 33335 Gütersloh (Germany) | Phone: +49 52 41 / 74 07 0 info@luetgert-antriebe.de | Sitemap | Legal Notice | Privacy policy | Privacy policy E-mails
© Copyright Lütgert & Co. GmbH
Friedrichsdorfer Straße 48
33335 Gütersloh
Germany
Phone: +49 52 41 / 74 07 0
info@luetgert-antriebe.de
Sitemap
Legal Notice
Privacy policy
Privacy policy E-mails