Description

Definition

The Flexible rubber coupling disk 788557 is a genuine OEM elastomeric coupling component used in the driveline of Claas balers. It is a flexible, typically disk-shaped element made of high-strength rubber or polyurethane, designed to be mounted between two flanged hubs to connect rotating shafts.

Function and Role

This disk’s primary role is to provide a torsionally flexible connection that transmits torque while accommodating misalignment and damping shocks. Its key functions are:

• Torque Transmission and Shock Damping: The disk flexes under load to smoothly transmit power from the power source (e.g., tractor PTO) to the baler’s input shaft. Its elasticity absorbs sudden shock loads and torsional vibrations, protecting both the tractor and the baler’s internal gears and bearings from damage.

• Misalignment Compensation: It can accommodate minor angular and parallel misalignment between the connected shafts. This flexibility is crucial for practical operation, as perfect alignment between the tractor and baler is difficult to maintain, preventing premature wear and binding.

• Vibration Isolation and Overload Protection: The rubber material acts as an effective insulator, reducing the transmission of noise and vibration. In extreme overload situations, the flexible disk can be designed to fail first, acting as a sacrificial component that is cheaper and easier to replace than a gearbox or driveline shaft.