Brake Caliper Piston Driver With PTFE Bearing Face

The patent combines the anti-friction function into the existing ball thrust bearing by coating its surfaces with PTFE, eliminating the need for separate anti-friction washers. This merging reduces component count and assembly complexity while maintaining the low-friction operational reliability that both components previously provided separately.

The patent applies a PTFE coating to the ball thrust bearing surfaces, creating a low-cost, easily applied anti-friction layer that replaces expensive specialized washers. The coating provides durable anti-friction properties at minimal cost, effectively substituting for more complex and expensive anti-friction components.

The patent uses PTFE coating, a cost-effective material that can be applied directly to the ball thrust bearing surfaces through standard coating processes. This eliminates the need for expensive specialized anti-friction washers while maintaining low friction, significantly reducing manufacturing costs.

By integrating the anti-friction function into the existing ball thrust bearing through coating, the patent eliminates separate anti-friction washers and their associated manufacturing and assembly costs, reducing overall manufacturing complexity and expense while maintaining friction reduction.

The patent merges the anti-friction function into the ball thrust bearing itself by coating its surfaces with PTFE, eliminating the need for separate anti-friction washers. This reduces the total number of components while maintaining the friction reduction achieved by having multiple anti-friction elements.

The ball thrust bearing is given multiple functions: it provides both the mechanical support and friction reduction previously requiring separate components. The PTFE-coated bearing surfaces perform the anti-friction function that would otherwise require dedicated washers, making the bearing a multi-functional component.