ZX120-6 MAIN PUMP(HPK055)/HPK170 Hydraulic Parts OVERVIEW

Features and Benefits

• Strictly machined according to original drawing dimensions, excellent interchangeability.

• High‑strength alloy‑steel and copper‑alloy friction pairs, outstanding wear‑resistance under long‑time high‑pressure heavy‑load operation.

• Professional heat‑treatment and ultra‑precision grinding, low internal‑leakage and high volumetric efficiency.

• Flexible supply: single spare‑part, separate repair‑kit and full rotary‑group assembly are all available.

• Reliable long‑term performance in tough mining and heavy‑construction‑site working‑conditions.

• Cost‑effective aftermarket alternative, effectively cuts maintenance‑expense and equipment downtime.

Applications

• Main‑pump overhaul & hydraulic repair for Hitachi excavators equipped with HPK055 and HPK170 piston pumps, including ZX120‑6, ZX110‑5A, ZX130‑5 and related large excavator models.

• Maintenance service for matched HPK‑series variable displacement piston pumps.

• Excavator repair workshops, machinery‑rental fleet and mining‑site equipment maintenance.

• Replacement of damaged core internal hydraulic components for main pumps.