OEM HITACHI ZX120 130 HYDRAULIC PUMP O RING | Tonkee®

O-rings: O-rings are round, rubber or elastomeric seals with a circular cross-section.

They are used to create a tight, leak-proof seal between two mating parts, typically a stationary surface and a moving component. In hydraulic systems, O-rings are crucial for preventing fluid leakage, maintaining system efficiency, and ensuring safety.

Material: The O-rings used in the Hitachi ZX120 and ZX130 hydraulic pumps are typically made from high-quality elastomeric materials like nitrile rubber (NBR), fluorocarbon rubber (FKM), or ethylene propylene diene monomer (EPDM). These materials are chosen for their durability, resistance to hydraulic fluids, and temperature stability, ensuring long-lasting and reliable performance in demanding working conditions.

Size and Specifications: The specific O-ring used in the hydraulic pump of these excavators must meet precise size and tolerance specifications. The dimensions are carefully chosen to fit the unique design and requirements of the hydraulic pump assembly. These specifications include the inner diameter (ID), outer diameter (OD), and cross-sectional diameter (thickness) of the O-ring, ensuring a snug fit within the pump's sealing grooves.

Sealing Function: O-rings in the hydraulic pump assembly serve as dynamic seals. When the hydraulic pump operates, it generates high-pressure hydraulic fluid that circulates through the system. O-rings prevent this pressurized fluid from escaping at critical points in the pump, such as between the pump housing and rotating components. This sealing function is vital for maintaining hydraulic system efficiency, preventing contamination, and ensuring operator safety.

Installation and Maintenance: Proper installation and maintenance of O-rings are essential to ensure their effectiveness.

During installation, O-rings should be lubricated with a compatible hydraulic fluid or O-ring lubricant to reduce friction and facilitate sealing. Regular inspections and replacement of O-rings at recommended intervals are crucial to prevent unexpected leaks and maintain the excavator's overall performance.

Compatibility: O-rings used in the hydraulic pump of the Hitachi ZX120 and ZX130 excavators must be compatible with the hydraulic fluids and operating conditions encountered in construction and earthmoving applications. This compatibility ensures that the O-rings can withstand the pressure, temperature, and chemical properties of the hydraulic system's fluid without deteriorating or losing their sealing capabilities.

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