YNF17563 Set Plate HMS072 Nine-Hole Set Plate for Excavator Hydraulic Pump Rotating Group

The YNF17563 Set Plate, engineered for the HMS072 hydraulic pump, is an essential rotating group component responsible for guiding the pistons during the return stroke. Its nine-hole structure maintains proper piston positioning, ensures consistent hydraulic timing, and reduces internal friction during operation. A worn or distorted set plate can cause vibration, uneven piston movement, loss of hydraulic efficiency, and accelerated wear of related components.

Manufactured from high-strength alloy steel and finished using precision CNC machining, the YNF17563 set plate offers excellent hardness, flatness, and resistance to deformation—key factors for maintaining reliable hydraulic pressure output. Its smooth surface reduces friction, improves pump responsiveness, and supports long-hour heavy-duty excavator work.

This part is widely used by pump rebuilders, excavator maintenance shops, and aftermarket part distributors. Replacing the nine-hole set plate during pump overhaul restores performance and significantly extends pump lifespan.