10450540 Washer Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

10450540 Washer Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

10450540 is a gasket with a unique part number from Sany, compatible with 125-ton mining excavators such as the SY1250H. It integrates a high-strength metal substrate, precision-formed structure, and multiple layers of corrosion protection, serving as a core sealing and protective component for bolt connections, pipe interfaces, and equipment end caps. It is primarily used in large open-pit coal mines and metal mines for mining and topsoil stripping operations. By dispersing tightening pressure and sealing gaps, it prevents bolt loosening, oil leakage, and dust intrusion, avoiding connection failures caused by heavy-load vibration, high temperature, and high pressure.

Core technical parameters

Model: 10450540, part number for washers specifically designed for Sany large mining excavators (SY1250H, etc.).
Main material: Available in both Q235 carbon steel and 304 stainless steel to suit different working conditions; Q235 carbon steel offers excellent toughness and high load-bearing capacity, suitable for dispersing heavy bolt pressure; 304 stainless steel is corrosion-resistant and oxidation-resistant, suitable for hydraulic pipelines and connections in humid environments; the material is dense and free of impurities, and after stamping, it is burr-free and crack-free, and can withstand long-term bolt compression and machine vibration without deformation or damage, meeting the requirements of heavy-duty mining conditions and conforming to the general material standards for engineering machinery washers.
Operating temperature: -30℃ to 150℃; no brittleness or deformation at low temperatures; maintains good structural stability and sealing performance at high temperatures.
Key operating parameters: Thickness specifications 1.0–5.0mm (common specifications: 1.0mm, 1.5mm, 2.0mm, 3.0mm, 5.0mm), dimensional tolerance ±0.02mm, flatness ≤0.03mm, uniform stress distribution, effectively dispersing bolt tightening pressure and preventing scratches on the surface of the connectors; compatible with corresponding bolt specifications (M12–M30), with precise inner and outer diameters fitting the bolts and connectors, sealing gap ≤0.01mm, effectively preventing oil leakage and dust intrusion; compression deformation rate ≤12%, superior to industry standards, no plastic deformation under long-term load, meeting the ISO 3601-3 heavy-duty equipment sealing accuracy standard, adaptable to the needs of connection parts with different pressure levels.
Structural Design: Utilizing a precision stamping integrated structure; the surface is smooth and flat, with a high degree of fit, allowing for a tight fit to the connection surface, filling tiny gaps, achieving reliable sealing, and preventing impurities from entering the connection area and causing loosening or corrosion; without excess protrusions, it adapts to various compact installation spaces throughout the machine, without interfering with the machine’s wiring harnesses, pipelines, or other components; available in two types: flat washers and elastic washers. Flat washers focus on pressure distribution, while elastic washers focus on anti-loosening and vibration reduction, allowing for flexible selection based on assembly requirements and adaptability to different connection scenarios.

Core functions and roles

As the “connection and protection core” of Sany’s large mining excavators, its core functions are to distribute bolt tightening pressure, seal gaps in connection surfaces, prevent bolt loosening and oil leakage, protect bolts and connectors from damage, and ensure the firmness and sealing of connections between components. In scenarios such as large open-pit mines and water conservancy projects, it not only prevents bolt loosening and connection failure caused by heavy-load vibration, but also prevents hydraulic oil and coolant leakage, eliminates wear and jamming caused by dust intrusion into components, protects the connection parts of core assemblies such as the slewing device, slewing platform, and cab, and extends the service life of the entire machine. At the same time, as a basic wear part, its convenient replacement can quickly restore connection sealing performance, reduce downtime for maintenance, and lower operating costs.

Applicable Scenarios

Widely used in bolted connections of all parts of 125-ton mining excavators such as the Sany SY1250H, including the connection between the slewing platform and the slewing device, the fixing of the cab and the slewing platform, the installation of the counterweight assembly, hydraulic pipeline interfaces, engine peripheral components, and the end cover of the travel gearbox, it is also suitable for various connection and sealing links of other large Sany construction machinery. It is 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. It is an essential basic accessory for equipment manufacturing, overhaul, old machine upgrades, and fault repair. It is also compatible with commercial scenarios such as after-sales equipment maintenance and bulk parts procurement. Its original factory precision compatibility and high reliability can significantly reduce modification costs and downtime, and avoid component damage due to gasket failure.

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1 SSY008347233 Slewing Platform
2. Platform Supervisor Lu
5 SSY004911131 1250 Cab Assembly
6. Rotary Mechanism
8 SSY007450352 Counterweight Assembly
9 10275621 Adjusting shims
10 10450540 Washer
11 SSY004981300 Counterweight Bolt
18 Body panel assembly

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