Engineered for Extreme Load, Superior Oxidation Resistance, and Ultimate Mechanical Protection
Modern heavy machinery demands lubricants that do more than reduce friction. Under boundary lubrication conditions—where micro-asperities contact in heavy-duty gear systems, wind turbine planetary gears, and marine propulsion drives—standard lubricants fail. Advanced Synthetic Gear Oils, particularly those incorporating synthetic bases such as Polyalphaolefins (PAO) and high-performance esters, are critical to avoiding micropitting, bearing wear, and thermal decomposition.
Globally, industrial operating environments are shifting toward higher extreme power densities. Gearboxes are shrinking to optimize weight and space, yet torque requirements are expanding. This necessitates oils formulated with advanced extreme pressure (EP) packages, exceptional viscosity indexes, and chemical resistance to demulsification. In this globalized industrial scenario, finding a reliable, high-volume OEM/ODM manufacturing partner capable of maintaining strict tribological consistency is vital.
Our heavy-duty L-CKD formulation is engineered to exceed FZG micro-pitting load stage 12, ensuring durability under extreme stress.
Exceptional thermal-oxidative stability prevents varnish formation, extending fluid service intervals by up to 200% compared to conventional oils.
Helping procurement directors and systems engineers optimize fluid choices based on physical-chemical metrics.
| Performance Metric | Conventional Mineral Gear Oil | PAO Synthetic Gear Oil (Century Longhai) | PAG Synthetic (Worm Gear Specialized) |
|---|---|---|---|
| Operating Temp Range | -15°C to 95°C | -45°C to 150°C | -35°C to 180°C |
| Viscosity Index (VI) | 90 - 100 | 140 - 170 | 180 - 220 |
| Traction Coefficient | Moderate (High energy loss) | Low (Energy saving 2-5%) | Very Low (Optimized for sliding contact) |
| Shear Stability | Moderate | Excellent (No viscosity loss) | Excellent |
| Corrosion Protection | Standard | Excellent (Advanced yellow metal passivators) | Excellent |
Established in 2009 | Headquartered in Zibo, Shandong
Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating R&D, advanced production, and international logistics. For over 15 years, we have built a complete lubricant industrial chain, delivering optimized lubrication solutions to global transport networks and industrial sectors.
Our proprietary brand, "Century Longhai", along with our strategic partnership brand "A Ba", covers motor oil, specialized gear oil, hydraulic fluid, compressor oil, and marine lubricants. Because we prioritize reliability, our products are backed by quality insurance from PICC China People's Insurance Company.
Combining raw material logistics, automation, and rigorous testing for high-performance lubrication products.
Spread over 131 acres, our facility utilizes fully automated blending systems that guarantee filling accuracy to within 1‰ to 2‰.
High manufacturing capacity coupled with direct raw material sourcing enables a 20%-35% speed advantage in processing bulk orders.
Our operational management is certified to ISO 9001:2015, ISO 14001, and ISO 18001 standards, alongside Mercedes-Benz OEM approvals.
Years of Lubricant Innovation
Tons Annual Production Capacity
Cities Served Nationally & Globally
Annual Revenue Reinvested in R&D
Optimized for challenging conditions across heavy industry, transport, and energy sectors.
Extreme shock loads in vibrating screen gearboxes require anti-wear additives to prevent micro-pitting and gear fatigue.
Wind turbine gearboxes operate in hard-to-access marine or remote environments. Our synthetic gear oils extend service life to reduce high maintenance overheads.
Robotic arms and precision assembly gear drives benefit from our low-friction worm gear lubricants, improving energy conversion efficiency.
Customizing formulations, testing performance, and branding products for international markets.
We supply high-quality standard products and develop customized formulations tailored to your operating environments, climates, and market requirements. Our R&D team partners with scientific institutions to design bespoke lubrication fluids.
Transparent milestones ensure consistent quality from design through bulk international delivery.
Specification Analysis
Lab Formulation
Dynamic Testing
Automated Production
Supply Chain Logistics
Inside our modern blending facility and research centers in Shandong.
Key information regarding industrial gear oil, engine lubrication, and chemical engineering specifications.
The primary difference lies in their load-bearing capabilities. L-CKC is formulated for medium-load gear drives, whereas L-CKD is engineered for heavy-duty systems operating under extreme pressure, severe heat, and continuous shock loads. L-CKD offers superior resistance to micropitting and thermal degradation.
PAO synthetic gear oils provide a higher viscosity index (VI), meaning they maintain a stable lubricating film at high temperatures while remaining fluid at very low starting temperatures. Additionally, their lower traction coefficient reduces energy consumption, leading to lower operating temperatures and reduced wear.
Our manufacturing base features automated blending systems and automated filling equipment that maintains packaging accuracy within 1‰ to 2‰. Each production batch undergoes rigorous laboratory testing to verify kinematic viscosity, viscosity index, flash point, pour point, and copper strip corrosion resistance prior to shipping.
Yes. Our R&D center cooperates with industrial customers to formulate custom lubricants. We tailor performance characteristics, such as viscosity profiles (ISO VG 150, 220, 320, 460, 680) and extreme-pressure additives, to match specific OEM requirements, target operational climates, and load dynamics.
Shandong Longhai has passed ISO 9001:2015 Quality Management System Certification, ISO 14001 Environmental Management System Certification, and ISO 18001 Occupational Health and Safety Certification. We also hold OEM approvals, including Mercedes-Benz certifications for automatic transmission fluid.
Standard blending runs are completed in 10 to 15 days, thanks to our daily production capacity. Custom formulation orders, including packaging design and label printing, typically take 20 to 30 days. We export through major regional ports to ensure prompt global shipping.
Premium Synthetic Formulations Designed for Modern Fleets, Marine Drives, and Heavy Industry
Longhai