4448400 Bucket Cylinder Seal Kit for Hitachi Excavator ZAX200 ZX200 ZAXIS200
4448400 Excavator Seal Kit Product Overview
4448400 Bucket Cylinder Seal Kit – OEM Replacement for Hitachi ZAX200/ZAX210/ZAX225USR/ZX200/ZAXIS200 Series Excavators Repair Kit. Designed to prevent hydraulic leaks, eliminate bucket drift during grading/trenching, and withstand high-frequency cycling. Exclusive compatibility with HCM-10G hydraulic systems.
4448400 Bucket Cylinder Seal Kit Specifications
| Compatible Models | ZAX200-3/6/8 • ZAX210-3 • ZAX225US-3 • ZAX225USR, ZX225 • ZAX200-3G/5G • EX200-5 • ZAXIS200 and more |
| Cylinder Bore/Rod | 105mm (4.13″) / 75mm (2.95″) (HIT-CLASS 10G) |
| Pressure Rating | 36 MPa continuous │ 55 MPa burst pressure |
| Temperature Range | -30°C to +115°C (-22°F to +239°F) |
| Seal Compounds | HNBR80 + Cast Polyurethane (CPU) |
4448400 Seal Kit Contents
| Asymmetric Actuator Seal | Zero-leak sealing at 36 MPa continuous load |
| Double-Action Rod Seal | 0.003mm rod clearance control |
| Low-Friction Guide Band | PTFE-coated (CoF <0.02) |
| Triple-Lip Wiper (Red PU) | Excludes 99.7% >10μm particulates |
| Pressure-Activated Buffer | Prevents extrusion at 55 MPa spikes |
| Static Seals (FKM) | Fuel/chemical resistant O-rings |
| Matches Hitachi Dwg HCM10G-BUCKET-SK09 | |
Key Benefits
✅ Eliminates Bucket Sag: Holds 0.1° position over 48 hrs
✅ High-Cycle Durability: Rated for 500,000+ cycles in JIS B 8393 endurance testing
✅ Contaminant Defense: Triple-lip wiper exceeds ISO 4406:19/17/13 cleanliness
✅ Rock/Hammer Compatibility: Withstands 55 MPa impacts from HB120/140 breakers
Frequently Asked Questions (FAQ)
Q: Do you have any other excavator model repair seal kits ?
A: Yes. As the professional excavator seal kits manufacturer, we produce all the excavators repair seal kits, standard sizes and also support customization. Please tell us the part number seal kit you want.
Q: I can’t find the model I want. Are all your seal repair kits here?
A: No. We have more than tens of thousands seal kits. Here only a small part of them is shown. We have stock of all the seal kits for construction machinery. Please contact us!
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