Explore our highly-refined, thermal-stable product series featuring ultimate anti-wear capabilities for diverse applications.
Within high-pressure, extreme-temperature mechanical operations, the choices made in hydraulic fluid selection directly dictate system longevity, operating efficiency, and total cost of ownership. Anti-Wear (AW) Hydraulic Oils represent a massive leap in chemical lubrication technology. Unlike standard mineral oils, AW oils are fortified with premium chemical additives, most notably Zinc Dialkyldithiophosphate (ZDDP) or specialized ashless additives, designed to prevent metal-to-metal contact under high-stress boundary lubrication states.
For industrial machinery, agricultural equipment, and heavy maritime gear, hydraulic systems function under pressure parameters exceeding 3,000 PSI. Under such high stresses, micro-asperities on metallic gear tooth interfaces and vane pump sliding brackets are susceptible to severe micro-welding and mechanical fatigue. AW hydraulic formulations form a robust, nano-scale protective tribofilm across metallic boundaries, keeping fluid displacement stable and eliminating mechanical degradation.
High-quality Anti-Wear Hydraulic Fluid must balance several crucial performance indices to maintain reliability:
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales. With more than 15 years of industry experience, the company boasts a complete industrial chain system dedicated to premium global lubrication solutions.
Our domestic brand "Century Longhai" and international strategic partnership brand, the British "A Ba" series, cover products from heavy-duty diesel oils to advanced synthetic gear and hydraulic fluids. All products are insured by PICC China People's Insurance Company, ensuring maximum reliability.
Longhai Technology operates a state-of-the-art production base spanning 131 acres, achieving an annual output capacity of over 200,000 tons of premium lubricants. We invest more than 5% of our annual revenue directly into specialized R&D, forging strategic research alliances with leading universities and research institutes to drive lubricant innovations.
Our plant incorporates fully automated blending systems and precision laboratories, ensuring consistent chemical homogeneity and stability across batches. The high-accuracy filling lines operate within a 1‰-2‰ metering tolerance, elevating filling speed by 20% to 35% compared to manual processes. This enables prompt order turnaround times and uncompromised supply security for wholesale distribution.
In the global lubrication market, sourcing from China-based factories like Longhai Technology offers major commercial advantages. Zibo, Shandong, functions as a core industrial hub with immediate access to primary refining and base oil supply networks. By leveraging local petrochemical infrastructures, our facility achieves unmatched vertical integration, maintaining consistent base oil availability and minimizing logistics costs.
Secondly, China’s industrial ecosystem fosters rapid customization and high flexibility. Whether a purchaser requires a zinc-based API category oil or a specialized biodegradable formula, our R&D team can refine and produce the required formulation in days. This rapid scaling matches global supply chain needs for industrial operators requiring quick, customized volumes.
Our raw additives are sourced from leading global providers (e.g., Lubrizol, Afton, Infineum), combined with high-grade Group II and Group III base oils. This integration guarantees that Chinese-manufactured hydraulic oils match the performance of Western brands, offering a substantial cost-to-performance benefit.
Adapting to the future of hydraulic lubrication with eco-friendly and high-efficiency formulations.
Increasing environmental regulations push for biodegradable synthetic hydraulic fluids. Our R&D center is optimizing eco-friendly formulations to minimize environmental impact in agricultural and offshore drilling operations.
Industrial operations require lubricants that perform consistently across wide temperature ranges. HVI fluids deliver reliable start-up in cold climates and robust protection under peak operational heat.
Modern high-pressure systems are prone to thermal degradation and varnish buildup. Our anti-wear formulations feature enhanced thermal-oxidative stability, keeping valves clean and systems operating at peak efficiency.
We provide full-service OEM and ODM customization to align with specific vehicle/equipment configurations, operating environments, or market positioning. Our facilities meet major international specifications, including API, ACEA, and various OEM standards.
From custom formulation development and flexible volume production to comprehensive brand packaging design and labeling, Longhai supports your brand growth. Whether you need small-scale trial runs or high-volume global distribution, our automated packaging lines ensure precise, reliable delivery.
Explore our ISO-certified production lines and testing facilities. Shandong Longhai maintains ISO 9001:2015, ISO 14001, and ISO 18001 certifications, alongside Mercedes-Benz automatic transmission approvals.
Answering key technical and purchasing questions to assist procurement and engineering teams.
R&O (Rust and Oxidation) hydraulic fluids contain anti-rust and anti-oxidant additives suitable for systems with lower operating pressures. In contrast, AW (Anti-Wear) fluids feature specialized anti-wear additives (usually ZDDP). These additives protect high-speed, high-pressure vane and piston pumps from metal-to-metal contact by creating a protective surface barrier under extreme boundary lubrication states.
The choice depends on operating temperatures and manufacturer recommendations:
• ISO VG 32: Ideal for cold climates or high-speed applications where low startup viscosity is required.
• ISO VG 46: The standard grade for general industrial machinery, providing balanced performance in moderate temperatures.
• ISO VG 68: Best suited for high-temperature, high-load machinery, ensuring robust film thickness under high thermal stress.
Zinc-free (ashless) hydraulic oils are recommended for environmentally sensitive applications (e.g., forestry, marine) to reduce toxicity. They are also essential for systems containing yellow metal components (such as silver or copper alloy plating) in high-temperature environments, where zinc additives can react and accelerate component corrosion.
Shandong Longhai holds ISO 9001:2015 (Quality), ISO 14001 (Environmental), and ISO 18001 (Health & Safety) certifications. Our automatic transmission formulations carry official Mercedes-Benz approvals, ensuring performance under demanding working conditions.
Our 131-acre Zibo production base features fully automated blending systems and dedicated laboratories. This automated setup maintains blending accuracy to within 1‰-2‰, ensuring chemical stability and consistent performance across batches.
Our OEM/ODM services cover custom viscosity profiles, specialized additive packaging (such as high-VI or biodegradable options), and private label packaging design. We support both small-scale trials and high-volume commercial production to help build your brand.
Explore our heavy-duty automotive motor oils, industrial gear oils, and specialty lubricants designed to optimize machinery efficiency.
Longhai
