Explore our flagship heavy-duty industrial oils and synthetic engine lubricants engineered for extreme pressures and severe operational environments.
In modern heavy industries, hydraulic systems act as the primary muscular force behind complex machinery. From injection molding machines in Southeast Asia to mega-ton excavation rigs operating in remote Australian mines, the reliability of hydraulic machinery underpins global supply chain uptime. At the core of these operations is anti-wear hydraulic oil. This engineered medium functions not only as a power transmitter but also as a boundary lubricant, sealing fluid, heat exchanger, and rust inhibitor.
The global industrial landscape has witnessed a significant shift towards high-pressure, compact hydraulic configurations. Modern system designs demand smaller oil reservoirs operating at twice the power densities of older systems. Consequently, hydraulic oils undergo severe thermal stress, mechanical shearing, and rapid oxidation cycles. These conditions demand high-quality formulations, primarily within the DIN 51524 HLP and HV classes, which leverage specialized Zinc Dialkyl Dithiophosphate (ZDDP) or advanced ashless technologies to prevent component wear and system fatigue.
Traditional systems operated below 200 bar (2900 psi). Today's electro-hydraulic units frequently exceed 350-400 bar (5800 psi). At these extreme pressures, fluid film thickness drops to fractions of a micron, making anti-wear boundary additives critical to prevent metal-to-metal contact.
A trusted manufacturer with global certifications and PICC quality insurance, dedicated to premium Tribological research and production.
Established in 2009 in Zibo, Shandong, China, Shandong Longhai Lubrication Technology Development Co., Ltd. has grown into a high-tech enterprise combining scientific research, product design, automated blending, and international export logistics. Operating a manufacturing facility spanning 131 acres with a robust annual capacity of 200,000 tons, the company stands as a major hub for high-performance lubrication products.
Our product lines, sold under our flagship brand "Century Longhai" alongside our British strategic partner brand "A Ba", cater to challenging industrial and automotive sectors. Our range includes high-efficiency diesel and gasoline engine oils, extreme-pressure industrial gear oils, marine lubricants, turbine oils, and premium anti-wear hydraulic fluids.
Quality control is central to our operations. We maintain certification in ISO 9001:2015 Quality Management, ISO 14001:2015 Environmental Management, and ISO 45001:2018 Occupational Health and Safety. Additionally, our specialized formulations carry international approvals, including transmission certifications from Mercedes-Benz.
Analyzing the field performance requirements for anti-wear hydraulic fluids across key global industrial sectors.
Operating under heavy variable loads, outdoor dust, and extreme temperature variations, mining gear requires fluids with a high viscosity index (HV) to prevent cavitation during sub-zero cold starts while maintaining full film thickness at extreme operating temperatures.
Modern injection molding machines demand high chemical stability and low varnish potential to prevent sluggish servo-valve behavior. Our products deliver thermal and oxidative resistance to ensure precise pressure control and reliable cycling.
Operating in environments prone to high temperatures and water exposure, hydraulic systems in steel mills depend on fluids with good demulsibility and water separation properties. This ensures consistent lubricity, even under water-incursion conditions.
Shandong Longhai invests more than 5% of its annual revenue into specialized R&D, partnering with technical universities and research institutes to advance additive chemistry. Traditional anti-wear agents are formulated using neutral and basic ZDDP molecules. These act under boundary lubrication conditions by decomposing at elevated sliding contact temperatures, forming a sacrificial protective phosphate/sulfate layer on steel surfaces.
However, current environmental and structural trends demand further evolution. We are actively refining three primary technological fields:
Quality formulation requires exact execution. Shandong Longhai’s manufacturing facilities utilize high-precision weighing systems to manage raw base oil components and multi-functional additive packages.
Our automated filling lines employ volumetric metering filling technology. This system guarantees filling accuracies within 1‰ to 2‰, minimizing volume deviations. Beyond precision, our machinery boosts packaging cycle speeds by 20% to 35%, ensuring quick and reliable order fulfillment for bulk and wholesale exports.
Every production run undergoes strict quality checks. Retained samples are kept in our laboratories for quality verification and batch tracking across our global shipping network.
Custom chemical engineering and comprehensive branding support for worldwide distributors and fluid brands.
We formulate tailored synthetic, semi-synthetic, and mineral-based hydraulic oils to meet specific equipment parameters, unique climates, or regulatory demands. We offer full packaging support—from bottle design to label printing—providing a streamlined process for our global partners.
Request Technical ConsultationOur structured procurement pathway ensures consistent communication, quality verification, and efficient bulk delivery.
Demand Analysis
Detailed evaluation of viscosity grades, operating environment, and volume requirements.
Formula Development
Developing specialized formulations for targeted application conditions.
Sample Testing
Rigorous laboratory evaluation followed by sample validation by the client.
Production Delivery
Precise batch blending, automated filling, and international shipping.
After-sales Support
Ongoing technical consulting, fluid analysis, and logistics tracking.
Shandong Longhai complies with international manufacturing standards, ensuring consistency and safety across all production runs.
A look inside Shandong Longhai's modern production facilities, blending workshops, and testing laboratories.
Expert answers addressing the selection, application, and performance criteria of high-pressure hydraulic oils.
Explore our wider range of specialized engine lubricants, compressor fluids, and heavy duty transmission oils.
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