Benefits

• Application-specific design for reliable shaft-hub connections
• Fast clamping and release compared to mechanical shrink discs
• Adaptable inner ring for different shaft or hub sizes
• Maintenance and repair can be carried out by the customer
• High torque transmission capability
• Operates at relatively low pressure

The TAS Schäfer SHS Series hydraulic shrink discs are designed for safe, fast, and repeatable frictional shaft-hub connections across a wide range of industrial drive applications. These shrink discs use hydraulic tensioning rather than mechanical tightening, allowing secure clamping with minimal effort and reduced installation time.

The SHS range combines proven mechanical design principles with the advantages of modern hydraulic technology. The three-part construction separates the force-transmitting friction surfaces from the hydraulic system, eliminating the risk of oil contamination and ensuring consistent performance over the life of the component.

This design makes the SHS series ideal wherever a strong, backlash-free shaft-hub connection is required — such as in test benches, drive systems, wind turbines, and gearbox assemblies.

Features and Advantages

The SHS hydraulic shrink disc stands out for its simplicity and efficiency.
Clamping can be achieved at pressures between 120 and 200 bar, allowing assembly in minutes rather than hours. Even at larger diameters, such as 530 mm, the hydraulic tensioning process is completed quickly, significantly reducing downtime and labour effort.

In contrast, mechanical shrink discs often require several hours of tightening and verification. By minimising manual work, the SHS series improves both operator safety and system uptime.

After long periods of operation, the shrink disc can be dismantled as easily as it was assembled. By simply loosening the screw connections, the unit can be disassembled without applying hydraulic pressure, enabling in-house maintenance or seal replacement without special tools or training.

Typical Applications

Hydraulic shrink discs of the SHS type are widely used across industries where precision, safety, and repeatability are essential.
Common examples include:

• Drive technology and test benches
• Gearbox-to-shaft couplings
• Wind energy systems
• Hydraulic motor drives
• Conveyor and heavy-duty power transmission equipment

Featured Products