Set Plate is the pressure plate that holds the piston group together and provides preload.

In most catalogs, it is also listed as:
Set Plate = Shoe Retainer / Retainer Plate

What is its function?

In short:
👉 It ensures that the piston shoes constantly and evenly press against the swash plate.

Detailed functions

• Holds the piston shoes in place

• Prevents the shoes from spreading or lifting

• Works with the center spring to:

  • Apply preload to the pistons

  • Ensure that even at low pressure, the pistons remain in contact with the swash plate

This maintains smooth operation, even load distribution, and consistent hydraulic output.