4241780 guide bushing is a critical genuine wearing part for Hitachi excavator hydraulic cylinders. Cross reference number:71452164.Adopts bi‑metal steel‑copper composite structure, outer high‑strength steel base, inner copper alloy wear‑resistant layer with precision oil grooves. It acts as the guide support for piston rod inside cylinder head, effectively avoiding piston rod offset wear and oil seal damage.
Worn‑out bushing will cause piston rod shaking, oil seal scratching and cylinder oil leakage. This genuine‑equivalent part is essential during hydraulic cylinder overhaul. Strictly manufactured following original FCF process, excellent pressure‑resistance and long service life, perfect interchangeable for original OEM parts.
Product Specification Table
| Item | Parameter |
|---|---|
| OEM Part No | 4241780 |
| Cross Reference No | 71452164 |
| Product Name | Genuine Hydraulic Cylinder Guide Bushing |
| Material | Bi‑metal:Steel base + Copper alloy inner layer |
| Structure | With inner oil groove |
| Application | Hydraulic cylinder head guide for excavator |
| Fit Machine | Hitachi ZX200, ZX240‑3, ZX330‑3, ZX330‑3G, ZX225US, EX100‑5, EX120‑5 |
| Processing Craft | FCF bi‑metal sintering process |
| Feature | High pressure resistance, anti‑friction, wear‑resistant |
| Quality | 100‑percent dimension inspection before shipment |
| Custom Service | Support OEM, custom non‑standard bi‑metal bushing |
| Package | Neutral export carton / original style packing |
✅ Dual‑metal composite genuine‑grade materialOuter steel matrix provides high structural strength to bear heavy radial load; inner copper alloy layer reduces friction, outstanding wear resistance for long‑time reciprocating movement of piston rod.
✅ Precision oil‑groove designInner surface machined with professional oil grooves for smooth lubricant circulation, lower friction coefficient, prevent dry grinding and overheating.
✅ Original OEM perfect interchangeabilityStrictly follow OEM dimension tolerance,Direct replacement for genuine 4241780 & 71452164,no modification needed during cylinder repair work.
✅ Strict genuine‑level quality controlEach bushing undergoes dimensional check, material inspection, surface quality test before delivery, stable performance for harsh construction site conditions.
‑ Excavator hydraulic cylinder overhaul & maintenance
‑ Repair boom / arm / bucket cylinder for Hitachi ZX & EX series excavators
‑ Replacement for worn, deformed or cracked old genuine guide bushing
‑ Construction machinery spare‑parts wholesale & aftermarket genuine‑equivalent supply
Fit for Hitachi excavator: ZX200, ZX240‑3, ZX330‑3, ZX330‑3G, ZX225US, EX100‑5, EX120‑5
Note: Please confirm your part number(4241780 /71452164)before purchase to guarantee correct fitting.
‑ Mass wholesale for excavator spare‑parts dealers
‑ OEM service, print customer logo & packing
‑ Custom‑made various bi‑metal steel copper bushing according to drawing or samples
‑ Complete‑set cylinder repair parts supply: bushing, oil seal kits, piston, rod guide etc.
We are professional manufacturer of construction machinery spare parts, focus on genuine‑equivalent hydraulic cylinder components, bi‑metal bushing and sealing kits. Strict production inspection, factory direct supply with competitive price. We offer part‑number matching consultation, installation tips and after‑sales technical support. Welcome global buyers for inquiry and bulk order.