replacement UCHIDA OIL HYDRAULICS Model A10FL25 -992-1- No.93-05A

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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UCHIDA OIL HYDRAULICS A10FL25-992-1-No.93-05A Specific Content Analysis

English Translation

1. Core Positioning and Technical Parameters

• Product Attribute: Belongs to UCHIDA Oil Hydraulics’ A10FL series hydraulic piston motor/pump, primarily used in high-pressure, high-load construction machinery scenarios (e.g., cranes, excavators, loaders). The model "A10FL25" indicates it belongs to the A10F series with a displacement of 25mL/rev, designed for pressures up to 420 bar, rotational speeds of 0-2000 RPM, and efficiency ≥90%.

• Structural Features: Adopts a modular design for quick replacement and maintenance; main body made of high-strength alloy steel or composite materials, paired with high-temperature/corrosion-resistant seals (e.g., Viton) to ensure durability in harsh conditions. Some models integrate electro-hydraulic proportional control modules, supporting linkage with intelligent systems like Komatsu Komtrax for real-time pressure monitoring and fault alerts.

2. Application Scenarios and Compatibility

• Core Applications: Widely applied in cranes (e.g., TADANO, Unic), excavators, drilling rigs, hydraulic steering, and braking systems. For example, the A10FL25 drives boom extension/rotation in cranes, ensuring precise control and stable output.

• Compatibility: Highly compatible with Rexroth (Bosch Rexroth) A10FL series models, interchangeable with Rexroth A10FL19/A10FL21/A10FL25, etc., and compatible with equipment from brands like Sany and XCMG.

3. Replacement Guidelines and Maintenance Recommendations

• Replacement Process:

• Model Matching: Confirm original equipment parameters (pressure, displacement, speed) to ensure new component specifications match. For instance, A10FL25-992-1-No.93-05A must align with the original equipment’s pressure rating (420 bar) and interface dimensions.

• Installation & Commissioning: After replacement, conduct system pressure testing and seal checks to ensure no leaks; use UCHIDA-specified hydraulic oil (NAS 1638 cleanliness standard) and replace filters regularly.

• Maintenance Tips:

• Routine Checks: Inspect seal wear every 500 hours and replace aging components; monitor oil cleanliness to prevent valve sticking from contaminants.

• Troubleshooting: Common issues include insufficient pressure, oil leaks, and slow response, resolved by cleaning the valve body, replacing seals, and calibrating electro-hydraulic modules.

4. Industry Certifications and Standards

• Compliance: Meets international hydraulic standards (ISO 1219, ISO 10771) and passes UCHIDA’s internal quality tests (e.g., pressure shock testing, fatigue life testing). Some models comply with Tier 4 Final emission standards for environmental protection.

• Certifications: CE and RoHS certified for regulatory compliance in markets like the EU.

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