K5V200 K7V63 Forged Alloy Steel Main Pump Repair Kit Cylinder Block Piston Shoe For Komatsu PC450-7 Hitachi ZX450-3

Forged Alloy Steel Construction — Unlike standard cast iron alternatives, our cylinder blocks and pistons are manufactured from forged alloy steel for superior structural integrity. Combined with ductile iron pump bodies, this kit delivers exceptional performance under sustained high-pressure hydraulic loads exceeding 350 bar.

• Komatsu PC450-7, PC450LC-7, PC400-7, PC340NLC-7K
• Hitachi ZX450-3, ZX450LC-3, ZX470-5G, ZX470R-5G, ZX500LC-3, ZX520LCH-3
• Deere 450D LC, 670G, 870G LC using PG200028 / 4633472 pump systems
• Other machines equipped with Kawasaki K5V200DPH or K7V63 pump series

• K5V200 Series — Variable displacement axial piston pump, widely used in 35-50 ton excavators. Our repair kit covers the complete rotating group assembly.
• K7V63 Series — Medium-duty piston pump for 20-30 ton class excavators. Fully compatible with OEM specifications.

• Material Certification — Alloy composition verified by spectrometer analysis per batch
• Dimensional Inspection — CMM (Coordinate Measuring Machine) checked to OEM tolerances
• Pressure Testing — Each cylinder block assembly tested at 420 bar (120% rated pressure)
• Surface Finish — Piston bores honed to Ra 0.2μm for optimal sealing and reduced wear

Each repair kit is individually wrapped with VCI (Volatile Corrosion Inhibitor) paper and packed in a custom foam-lined carton to prevent transit damage. Export-grade wooden cases used for bulk shipments. 5-10 working days delivery from our Guangdong facility.

Contact us today with your pump model and required components for a customized quotation and availability check.