A820101117871 Cover Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

A820101117871 Cover Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

A820101117871 is an original equipment manufacturer (OEM) part number cover specifically designed for the Sany SY1250H 125-ton mining excavator. It integrates a high-strength, wear-resistant base material, precision-formed structure, sealed protective interface, and corrosion-resistant and wear-resistant surface layer. It is a key protective component for core parts such as the slewing device, hydraulic pump/motor end cover, and travel gearbox housing of the SY1250C2C3KH. Primarily used in large open-pit coal mines and metal mines for excavation and topsoil stripping operations, it isolates the internal components from mine dust, moisture, and debris through a sealed protective structure. It also protects internal shafts, gears, seals, and other precision components from impact damage, prevents hydraulic oil and lubricating oil leakage, and avoids transmission jamming, component wear, and other malfunctions. Suitable for mining conditions characterized by high temperature, high dust, strong vibration, and large temperature differences, it is a crucial OEM part for reducing maintenance costs and ensuring operational continuity in mines.

Core technical parameters

Model: A820101117871
Main body material: Available in high-quality aluminum alloy or Q235 carbon steel to suit different protection needs; the aluminum alloy version is lightweight and corrosion-resistant; processed with precision CNC machining and heat treatment, the material is dense, free of impurities, bubbles, and cracks, with a tensile strength ≥420MPa.
Operating temperature: -30℃ to 180℃; no brittleness or deformation at low temperatures; maintains good structural stability and sealing performance at high temperatures.
Key operating parameters: Thickness 8–15mm (common sizes: 8mm, 10mm, 12mm, 15mm), dimensional tolerance ±0.02mm, flatness ≤0.03mm, high fit, can tightly fit with gaskets, sealing gap ≤0.01mm; suitable working pressure 0-35MPa; tensile strength ≥420MPa, compressive strength ≥350MPa, impact toughness ≥20J/cm², service life ≥8000 working hours.
Structural Design: Utilizes a one-piece molded structure with rounded corners; features an internal sealing groove for precise embedding of the A820606030364 sealing gasket; includes pre-drilled mounting holes for precise matching with connecting bolts; and incorporates internal reinforcing ribs.
Shape and Dimensions: The overall shape is flat (flat cover or irregularly shaped cover), with a regular shape, free of burrs and cracks. The dimensions are precisely matched to the hydraulic pump/motor end cover, slewing device protective parts, and travel gearbox housing of the SY1250H excavator, with a mounting hole position accuracy of ±0.05mm.

Core functions and roles

As the “core protective barrier” of the SANY SY1250H 125-ton mining excavator, its core function is to protect internal precision components, seal the medium, and isolate external impurities, preventing core components from impact, wear, and leakage, and ensuring the normal operation of the hydraulic and transmission systems. In scenarios such as large open-pit mines and water conservancy projects, it not only prevents mine dust, moisture, and debris from entering core assemblies such as the slewing device and hydraulic pump/motor, preventing wear and jamming of internal shafts, gears, and seals, but also works with the A820606030364 sealing gasket to achieve reliable sealing, preventing hydraulic oil and lubricating oil leakage and reducing operation and maintenance costs.

Applicable Scenarios

Widely used in the hydraulic system, transmission system, and core component protection parts of the SANY SY1250H 125-ton mining excavator, including the protective end cover of the SY1250C2C3KH slewing device, hydraulic pump/motor end cover, travel gearbox housing cover, and pipeline interface protective cover, these are essential components for protecting the core components of the entire machine. They are also compatible with corresponding protective parts on other large mining excavators of the same specifications from SANY. They are particularly suitable for 24-hour continuous heavy-duty operation in harsh conditions (high dust, strong impact, large temperature difference between day and night, high humidity) in open-pit mines and large-scale earthmoving projects. They are essential protective structural components for equipment manufacturing, overhaul, old machine upgrades, and fault repair. They are also suitable for commercial scenarios such as after-sales equipment maintenance and bulk parts procurement. Their original factory precision compatibility and high reliability can significantly reduce modification costs and downtime, preventing damage to core components and media leakage due to cover failure.

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3. Power System
4. Pipeline
7. Air conditioning system
12 SSY004929649 Bushing 180×160×76
13 SSY004929650 Bushing 180×160×105
14 A820606030364 Sealing Gasket
15 A820101117871 Cover
16 A210491000121 Washer
17 A210111000101 Bolt

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