Spare part 4640278 HYDRAULIC HOSE - FABRICATE (Hitachi)_Diesel Engine_Products

4640278 HYDRAULIC HOSE - FABRICATE (Hitachi)

Product Overview

The 4640278 Hydraulic Hose is a high-quality, fabricated spare part specifically designed for various Hitachi heavy machinery. Engineered to meet rigorous performance standards, this hydraulic hose ensures efficient power transmission and reliable operation in demanding environments. Its robust construction guarantees longevity and resistance to wear, making it an essential component for maintaining optimal equipment performance and reducing downtime.

Product Specifications

Part Number: 4640278
Type: Hydraulic Hose - Fabricate
Material: High-grade synthetic rubber with multiple reinforcement layers (e.g., steel wire braid)
Operating Pressure: Designed for high-pressure hydraulic systems (specific pressure ratings may vary based on fabrication)
Temperature Range: -40°C to +100°C (-40°F to +212°F)
Length: Fabricated to specific lengths as per application requirements
Fittings: Compatible with standard Hitachi hydraulic fittings
Durability: Excellent resistance to abrasion, oil, weathering, and ozone

Key Advantages & Selling Points

Optimized Performance: Ensures efficient and reliable hydraulic fluid transfer, crucial for the smooth operation of heavy machinery.
Exceptional Durability: Constructed with premium materials and reinforced layers to withstand extreme pressures, temperatures, and abrasive conditions, extending the lifespan of your equipment.
Precision Fabrication: Each hose is meticulously fabricated to exact specifications, guaranteeing a perfect fit and seamless integration with Hitachi systems.
Reduced Downtime: High reliability minimizes the risk of hose failures, leading to less equipment downtime and increased productivity.
Cost-Effective Solution: A durable and long-lasting replacement part that reduces the need for frequent replacements, offering significant long-term savings.
Genuine Hitachi Quality: Manufactured to Hitachi's stringent quality standards, ensuring compatibility and peak performance.

Applicable Equipment

The 4640278 Hydraulic Hose is suitable for a wide range of Hitachi heavy equipment, including but not limited to:

Hitachi Excavators: EX Series (e.g., EX120, EX200, EX300, EX400), ZAXIS Series (e.g., ZAXIS120, ZAXIS200, ZAXIS330, ZAXIS450)
Hitachi Wheel Loaders: ZW Series (e.g., ZW180, ZW220, ZW310)
Hitachi Dozers: (Specific models may vary depending on hydraulic system configurations)
Hitachi Cranes: (Specific models may vary depending on hydraulic system configurations)
Other Hitachi Construction and Mining Equipment requiring high-pressure hydraulic fluid transfer.

Application Scenarios & Case Studies

This hydraulic hose is integral to the functioning of various hydraulic circuits within Hitachi machinery, playing a critical role in:

Excavation Operations: Powering the boom, arm, and bucket cylinders for digging, lifting, and loading in construction, mining, and demolition sites.
Case Study: A Hitachi ZAXIS330 excavator operating in a large-scale mining project experienced consistent hose failures on its main boom cylinder, leading to significant downtime. Replacing the faulty hoses with genuine 4640278 Hydraulic Hoses resulted in a 40% reduction in hydraulic system-related downtime over a six-month period, drastically improving operational efficiency and material extraction rates.
Material Handling: Enabling the precise control and movement of materials using wheel loaders and other lifting equipment.
Case Study: A logistics company using a Hitachi ZW220 wheel loader for aggregate handling faced frequent hydraulic leaks from worn hoses on its tilt cylinder. After installing the 4640278 fabricated hoses, the loader maintained consistent performance under heavy loads, eliminating leaks and extending service intervals, thereby reducing maintenance costs.
Site Preparation: Facilitating the movement and grading of earth with bulldozers and other earthmoving equipment.
Demolition Projects: Ensuring the powerful and controlled operation of hydraulic breakers and pulverizers attached to excavators.

Related Similar Products

Beyond the 4640278, we offer a comprehensive range of Hitachi hydraulic hoses and related components, including:

High-Pressure Hydraulic Hoses (various diameters and lengths): Suitable for main hydraulic lines, pump outlets, and high-load circuits in excavators, loaders, and dozers.
Return Hoses: Designed for lower pressure fluid return lines, essential for maintaining proper system pressure and filtration. Applicable to all Hitachi hydraulic machinery.
Pilot Hoses: Smaller diameter hoses for pilot control systems, ensuring precise and responsive machine operation. Found in excavator control valves and joystick assemblies.
Breaker Hoses: Specifically designed to withstand the extreme pulsations and vibrations associated with hydraulic breakers. Primarily used with excavators equipped with breaker attachments.
Hydraulic Hose Fittings and Adapters: A complete range of connectors, elbows, and adapters to ensure secure and leak-free hydraulic connections across all Hitachi models.
Hose Guards and Sleeves: Protective coverings that enhance the durability of hydraulic hoses in abrasive or high-temperature environments. Recommended for all equipment operating in harsh conditions.

Common Installation & Maintenance Issues and Solutions

Issue: Leaks at Fittings
Cause: Improper torque during installation, damaged O-rings or seals, incorrect fitting type, or cross-threading.
Solution: Always use a torque wrench to tighten fittings to manufacturer specifications. Inspect O-rings and seals for damage and replace as needed. Ensure correct fitting types are used for the hose and port. Avoid over-tightening, which can damage threads.
Issue: Hose Abrasion/Chafing
Cause: Hoses rubbing against sharp edges, other hoses, or machine components due to incorrect routing or lack of protective measures.
Solution: Reroute hoses to avoid contact points. Utilize hose guards, spiral wrap, or clamps to secure hoses and prevent rubbing. Regularly inspect hose routing during maintenance.
Issue: Kinking or Twisting of Hose
Cause: Insufficient hose length, incorrect routing that forces sharp bends, or improper installation procedures.
Solution: Ensure adequate hose length to allow for machine movement without kinking. Maintain minimum bend radii as specified by the manufacturer. Install hoses without any twists; the layline on the hose should remain straight along its length.
Issue: Premature Hose Failure (Bursting/Cracking)
Cause: Exceeding operating pressure, extreme temperature fluctuations, fluid contamination, aging of material, or external damage.
Solution: Verify system pressure does not exceed the hose's rated working pressure. Ensure correct fluid type is used and contamination is avoided. Implement a preventative maintenance schedule for hose inspection and replacement. Protect hoses from external impacts.
Issue: Difficulty in Hose Installation/Removal
Cause: Tight spaces, seized fittings, or incorrect tools.
Solution: Use appropriate hydraulic hose tools (e.g., crowfoot wrenches, adjustable wrenches designed for hydraulics). Apply penetrating oil to seized fittings. For tight spaces, consider temporarily removing adjacent components if safe to do so. Always depressurize the hydraulic system before any work.

Spare part 4640278 HYDRAULIC HOSE - FABRICATE (Hitachi)

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