12731156 Oil return cap Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

12731156 Oil return cap Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The Sany 12731156 return oil cover is the “core protection device for the return oil port” in the hydraulic system. Installed at the return oil port, it adopts a sealed and reinforced structure to intercept dust and impurities, prevent oil leakage, and buffer the impact of working conditions. It is specially designed for Sany’s large heavy-duty engineering machinery (such as the SDC120/125 twin-wheel grooving machine, 570.5kW power). It can avoid oil leakage, pipeline contamination and system failure caused by deformation, damage, and seal failure, ensuring equipment operation, improving construction efficiency, and is suitable for various heavy-duty projects, which fits Sany’s high-efficiency heavy-duty positioning.
This product strictly adheres to SANY’s original factory standards, using high-quality Q235 steel precision machining, combined with a hot-dip galvanized anti-rust coating and oil-resistant nitrile rubber seals. It boasts advantages such as tight sealing, impact resistance, and convenient installation. Through precision machining, sealing testing, and aging treatment, it achieves accurate dimensions, a high degree of fit, and seamless construction, making it suitable for dusty and humid outdoor environments. Direct installation is possible, reducing downtime losses, extending the lifespan of the return oil pipeline and hydraulic system, and lowering maintenance costs.

Core technical parameters:

– Product Model: Sany Oil Return Cap
-Part Number: 12731156
– Product type: Oil return cap, a core component of engineering machinery, focusing on sealing and protecting the oil return port, preventing dust and impurities, and preventing oil leakage.
– Core materials: Main body Q235 high-quality steel; surface hot-dip galvanized anti-rust coating; sealing parts oil-resistant nitrile rubber rings.
– Material characteristics: Q235 steel has high tensile strength, good rigidity, and is not easily deformed due to impact; hot-dip galvanized coating is corrosion-resistant and weather-resistant; sealing ring prevents leakage and impurities from entering.
– Operating parameters: Rated load ≥40kN, operating temperature -40℃~120℃, compatible with SANY heavy-duty models; excellent sealing with no leakage, dustproof rating IP65, suitable for dusty environments such as mines and piling operations, impact resistant, and ensures smooth oil return.
– Processing technology: precision stamping + turning + hot-dip galvanizing + sealing treatment + aging treatment. After sealing test and dimensional calibration, it meets relevant standards and SANY specifications.
– Core dimensions: Total length 120mm, outer diameter 80mm, thickness 15mm, mounting interface diameter 50mm, mounting hole spacing 100mm, diameter 14mm, precisely matching mounting position, tolerance ≤ ±0.2mm.
– Compatible models: SANY large-scale engineering machinery (including twin-wheel trenching machines), can directly replace original parts, compatible with 570.5kW models, suitable for oil return port protection in mining, earthwork and piling projects.

Sany’s 12731156 return oil cover, with its original factory compatibility and excellent protective performance, has become the preferred consumable for the maintenance of hydraulic systems in Sany’s large-scale engineering machinery. It is easy to install, can be directly replaced, effectively solves various return oil cover malfunctions, reduces downtime, lowers costs, protects the return oil pipeline for cleanliness, and improves construction safety and system stability.

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