Bucket Hydraulic Cylinder for Hitachi Excavators
Premium bucket hydraulic cylinder designed for Hitachi excavators. Built with hardened alloy steel, precision honed inner tubes, and OEM-grade seals to ensure smooth bucket articulation and long-term hydraulic performance in harsh working environments.
| Cylinder Tube | Q345 / ST52 / 27SiMn / 20# Steel |
|---|---|
| Piston Rod | 45# / 40Cr / 42CrMo (Hard Chrome Plated) |
| Piston | Ductile Iron / Forged Steel (45# / 20Cr) |
| Cylinder Head | Q345 / 45# Steel / Cast Steel |
| Seals | Polyurethane (PU), NBR, FKM |
| Guide Bush | Bronze Alloy / Composite Materials |
| Ports & Fittings | Zinc-Plated Carbon Steel / Stainless Steel |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The bucket hydraulic cylinder is a key component of the excavator’s front-end hydraulic system. It directly controls the movement of the bucket, allowing the machine to dig, scoop, lift, and dump with power and precision. In Hitachi excavators, known for their responsive controls and workgroup stability, the bucket cylinder plays a central role in ensuring bucket articulation stays consistent—especially under high-cycle operation such as trenching, loading, or rock handling.
A worn or poorly matched bucket cylinder can lead to hydraulic inefficiency, misalignment of bucket angles, and excessive wear on linkage points and seals. That’s why choosing a well-constructed, OEM-compatible replacement is essential for machine performance and operator confidence.
Materials & Internal Structure
Our bucket cylinders are constructed with hardened alloy steel barrels, heat-treated piston rods, and CNC-machined end fittings to provide maximum strength and shock resistance. The inner wall of each cylinder is honed to mirror-like finish, ensuring fluid-tight operation and minimal friction.
The piston rod is chrome-plated to prevent pitting, corrosion, and seal abrasion, even when working in muddy or abrasive environments. The end caps, ports, and pin bores are manufactured with tight tolerances to ensure accurate fitment and pressure stability.
Advanced Sealing System
Each cylinder is equipped with a multi-stage sealing structure, including:
- High-pressure rod seals
- Dust wipers
- Wear rings and buffer seals
- Static end-cap O-rings
We use sealing kits compatible with Parker, NOK, or Hallite standards, ensuring resistance to oil leakage, pressure surges, and temperature changes. This helps extend service intervals and maintain consistent pressure under demanding conditions.
This cutaway view helps users understand how pressure is generated and transferred inside the cylinder.
Cylinder Manufacturing Process
Every Hitachi bucket cylinder we produce follows a strict multi-step manufacturing process, ensuring structural strength, hydraulic reliability, and long-term durability.
Rod Polishing & Surface Prep
The production begins with the forging and precision grinding of the main piston rod. Each rod undergoes multi-stage polishing, resulting in a surface roughness of less than Ra 0.2μm. This ultra-smooth finish not only reduces friction and seal wear but also provides a flawless surface for hard chrome plating, which adds corrosion and abrasion resistance.
Assembly & Sealing
The cylinder barrel, end caps and connection ports are CNC machined to exacting tolerances prior to assembly. We install high-quality seal kits—including dust wipers, buffer seals, wear rings, and high-pressure rod seals—designed to withstand high pressure and temperature fluctuations. Our technicians manually verify fitment and alignment during this stage to ensure leak-free operation.
Pressure Testing & Export Packaging
Once assembly is complete, every cylinder is subjected to a 100% hydraulic pressure test, simulating real working conditions to detect any seal failure or structural weakness. After passing inspection, the finished cylinder is cleaned, coated with rust-preventive oil, and securely packed in wooden export crates with protective caps and internal padding—ready for safe delivery to your job site.
OEM Undercarriage Parts for Hitachi Excavator
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| HITACHI-EX/ZAX/ZX | EX30 | EX40 | EX55 | EX60 | EX60-2 | EX60-3 | EX60-5 | EX70 |
| EX75 | EX100 | EX100-3 | EX100-5 | EX120 | EX120-1 | EX120-3 | EX120-5 | |
| EX130-1 | EX200-1 | EX200-2 | EX200-3 | EX200-5 | EX200LC-1 | EX200LC-2 | EX200LC-3 | |
| EX200LC-5 | EX220-3 | EX220-5 | EX270 | EX270-1 | EX270-2 | EX270-5 | EX270LC-1 | |
| EX270LC-2 | EX270LC-5 | EX300 | EX300-1 | EX300-2 | EX300-3 | EX300-5 | EX300A | |
| EX300LC-1 | EX300LC-2 | EX300LC-3 | EX300LC-5 | EX330 | EX370 | EX400-1 | EX400-2 | |
| EX400-3 | EX400-5 | EX400LC-1 | EX400LC-2 | EX400LC-3 | EX400LC-5 | EX450 | EX450-1 | |
| EX450-2 | EX450-3 | EX450-5 | EX450LC-1 | EX450LC-2 | EX450LC-3 | EX450LC-5 | UH07-7 | |
| ZAX30 | ZAX55 | ZAX200 | ZAX200-2 | ZAX330 | ZAX450-1 | ZAX450-3 | ZAX450-5 | |
| ZX30 | ZX33 | ZX38U | ZX40 | ZX55 | ZX60 | ZX70 | ZX75US | |
| ZX120 | ZX130 | ZX160LC | ZX200 | ZX210 | ZX240 | ZX270 | ZX330 | |
| ZX360 | ZX400 | ZX450 | ZX470 | ZX500 | ZX650 | ZX850 | ZX870 | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Compatible Hitachi Models
This bucket cylinder is available for various Hitachi crawler excavator models, including but not limited to:
- ZX200 / ZX210 / ZX240 / ZX270 / ZX330 / ZX350 / EX200 / EX300
- Other variants available upon request — just send your model or drawing
Not sure about compatibility? Send us your machine model, cylinder length, pin size, or OEM part number, and we’ll match the right product for you within 12 hours.
Export Packaging & Quality Control
Before shipping, each bucket cylinder undergoes:
- Pressure and leak testing up to 1.5x rated pressure
- Weld seam inspection
- Rod straightness check
- Coating and anti-rust treatment
Cylinders are packed in steel or wooden crates, with protective end caps, rust-proof film wrapping, and optional customer labeling.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
