422-4560 D7H lifting cylinder CAT bulldozer spare parts

422-4560 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. It can stably withstand heavy load pressure and prevent cylinder deformation and piston wear. The inner wall of the cylinder is precision honed and the surface is smooth. With the help of high-quality seals, it is waterproof, oilproof and leak-proof, suitable for complex working conditions. It solves the pain points of lifting cylinder leakage, jamming, weak lifting and lowering, and cylinder deformation. It is perfectly compatible with the hydraulic system of D7H model.

【Core Technical Parameters】

-Product Model: 422-4560
– Product Type: Lifting Cylinder (Original Equipment Manufacturer, D7H Series Engineering Machinery Dedicated Lifting Transmission Load-Bearing Accessory)
– 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), ensuring precise lifting stroke, efficient power transmission, and also features buffering and pressure stabilization functions.
-Dimensions: Precisely fits the original installation position of the D7H model; cylinder diameter, rod diameter, and stroke are tailored to the hydraulic system requirements; perfectly matches hydraulic lines and mounting brackets; will not shift or loosen after installation.
-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.
– Manufacturing process features: precision forging, honing, tempering heat treatment, nitriding for corrosion protection, optimized sealing; precise dimensions, stable operation, balancing transmission efficiency, load-bearing capacity, and durability.

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 and reducing maintenance costs. It is an original factory compatible part, with a unique code for traceability, guaranteed quality and after-sales service, and easy installation. It is a high-quality original spare part for D7H model lifting cylinder repair and replacement, and for bulk stocking.

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