1U-4581 D7H Lifting Cylinder CAT bulldozer spare parts

1U-4581 D7H Lifting Cylinder CAT bulldozer spare parts

This product is an original equipment manufacturer (OEM) accessory, precisely matched to D7H series construction machinery (including loaders, bulldozers, etc.). Utilizing precision forging and honing processes, it is compatible with the original installation positions and hydraulic systems, allowing for quick installation without complex adjustments. It can withstand on-site bumps, high and low temperatures, and dusty and oily working conditions. It is tightly sealed, leak-free, runs smoothly, and is not prone to jamming. It complies with relevant specifications of GB/T 10827.1-2014 and JB/T 10205-2013.
This product uses original factory-customized 45# seamless steel pipe and high-quality alloy piston. After tempering heat treatment and nitriding anti-corrosion treatment, it has high strength, impact resistance and fatigue resistance, and can stably withstand heavy load pressure, preventing cylinder deformation and piston wear. The inner wall of the cylinder is precision honed and the surface is smooth. It is equipped with high-quality nitrile rubber (NBR) seals, which are waterproof, oilproof and leak-proof, suitable for complex working conditions, and solves pain points such as leakage, jamming, weak lifting and lowering and cylinder deformation of the lifting cylinder. It is perfectly compatible with the hydraulic system of the D7H model.

【Core Technical Parameters】

-Product Model: 1U-4581
– Product Type: Lifting Cylinder (Original Equipment Manufacturer, D7H Series Engineering Machinery Dedicated Lifting Transmission Load-Bearing Accessory)
– Product Brand: Genuine Original Product (Compatible with D7H series models, quality is the same as the original equipment, and after-sales service is guaranteed)
– Compatible models: D7H series construction machinery (loaders, bulldozers, etc., precisely matched to original factory installation dimensions and hydraulic systems)
– Material: The cylinder body is made of 45# seamless steel pipe, the piston is made of high-quality alloy, and the seals are made of nitrile rubber (NBR). The cylinder has undergone heat treatment and nitriding for corrosion protection, meeting relevant quality standards.
-Operating temperature range: -30°C to +80°C (stable under extreme temperatures, smooth hydraulic transmission, no degradation in sealing performance, no jamming, and no leakage)
– Structural Specifications: Integrated hydraulic cylinder structure, including core components such as cylinder body, piston, piston rod, and seals. It adopts a single-acting/double-acting design (suitable for D7H model requirements), providing precise lifting stroke, efficient power transmission, and buffering and pressure stabilization functions. It is compatible with high-pressure hydraulic systems.
– Dimensions: Precisely fits the original installation position of the D7H model; cylinder diameter, rod diameter, and stroke conform to the hydraulic system requirements; perfectly matches hydraulic lines and mounting brackets; will not shift or loosen after installation; dimensional parameters conform to original factory standards.
-Installation method: Bolt fixing + hydraulic line connection, compatible with original factory mounting holes and hydraulic interfaces, easy to install and quick to replace, requires professional hydraulic testing to ensure tight sealing and stable operation.
– Protective properties: Waterproof, dustproof, and oil-resistant; nitrided for corrosion protection; salt spray resistance ≥480 hours; wear-resistant and corrosion-resistant; seals are oil-resistant and aging-resistant; leak-proof; hydraulic transmission efficiency ≥95%.
-Service life: ≥3 years under normal operating conditions, ≥1.5 years under harsh operating conditions; no deformation or leakage after 100,000 lifting tests; piston wear ≤0.1mm; stable sealing performance.

Whether in bumpy environments, dusty mines, or extreme temperatures, this product consistently performs its lifting, transmission, and load-bearing functions, ensuring smooth operation of D7H series equipment. It is compatible with high-pressure hydraulic systems, reducing maintenance costs. Original factory compatible, each item has a unique code for traceability, quality and after-sales service are guaranteed, and installation is convenient. It is a high-quality original spare part for D7H model lifting cylinder repair and replacement, and for bulk stocking.

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