Explore our highly engineered industrial and automotive fluid solutions designed for reliable machinery operations under severe loads and environments.
Open gear drives are the critical mechanical lifelines of global infrastructure, found at the core of massive rotary systems such as ball mills, SAG mills, rotary kilns, draglines, and stacker-reclaimers. Operating under boundary and mixed lubrication conditions, these drives face extreme load concentration, dust penetration, water exposure, and drastic temperature differentials. Conventional oils quickly run off or dry out, leading to rapid abrasive and adhesive wear.
As a leading China Open Gear Lube Manufacturer & Supplier, we design our advanced formulations to address these high-stress tribological contact zones. High-viscosity base fluids blended with extreme pressure (EP) additives and functional solid lubricants (such as micro-fine graphite and molybdenum disulfide) form a high-tenacity, self-healing film. This film prevents direct metal-to-metal contact, dampens shock loads, and shields critical tooth profiles from early failure.
| Tribological Challenge | Mechanic Failure Mode | Chemical Solution Pathway |
|---|---|---|
| Boundary Lubrication Contact | Scuffing, Adhesive Wear, Pitting | MoS2 / Graphite Protective Solid Fillers |
| Shock & Impact Loading | Tooth Micro-Fractures, Spalling | Viscosity Modifiers, Shear-Stable Polymers |
| Environmental Particulates | Abrasive Wear, Grit Scratches | Tacky Fluid Shielding, Flush-Friendly Chemistry |
| Thermal Variation & Frost | Film Rupture or Over-Viscous Clogging | High Viscosity Index (VI) Synthetic Base Stocks |
Shandong Longhai Lubrication Technology Development Co., Ltd. was established in 2009 and is headquartered in Zibo, Shandong. It is a high-tech enterprise integrating R&D, production and sales. The company has been deeply involved in the lubricant industry for more than 15 years, has built a complete industrial chain system, and is committed to providing high-quality lubrication solutions for the global industrial and transportation fields.
As a reliable lubricant manufacturer in the industry, Longhai Technology owns its own brand "Century Longhai" and the international strategic cooperation brand British "A Ba" series of products. The products cover diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, special engine oil for engineering machinery, special oil for natural gas, full synthetic oil, automotive urea solution, antifreeze, special engine oil for motorcycles, industrial oil, automatic transmission oil and many other lubricant varieties. The brand is insured by PICC China People's Insurance Company and quality insurance.
Across continents, heavy raw material processing is scaling up. The demands placed on mechanical systems are rising, making specialized lubricants critical for long-term machine survival.
From massive copper sag mills in South America to coal draglines in Australia, mining operates under harsh conditions. Fine rock dust constantly infiltrates gears. Standard grease acts as an abrasive grinding paste when contaminated. Our customized open gear lubricants are engineered with non-asphaltic synthetic esters that trap contaminants and carry them off the tooth contact area, preserving gear geometry.
Rotary kilns operate at extremely high thermal levels. Heat radiates from the kiln shell directly into the girth gear assembly. Ordinary grease melts, runs off, and leaves the gear dry. Our specialized open gear lubricants rely on advanced synthetic bases combined with heavy solid graphite, allowing them to remain stable at temperatures exceeding 200°C without charring or thinning.
Stacker reclaimers, port loaders, and bulk conveyances face harsh marine environments. They require lubricants that resist saltwater wash-off, rust formation, and wind-blown sands. Century Longhai's open gear chemistry is formulated with high adhesive tackiness, keeping it bound tightly to the gear flanks to protect metal components from corrosion.
The company has passed ISO-9001-2015 quality system certification, 14001 environmental management system certification, 18001 health management system certification. Automatic transmission Mercedes-Benz certification has laid the foundation for the healthy development of the company and the stability of product quality. The company strictly follows international standards and introduces foreign production processes and testing technologies to ensure that the products can still perform excellently under extreme working conditions, helping customers improve equipment efficiency and reduce maintenance costs.
In the globalized industrial market, lubricants must meet precise physical specifications. For heavy duty gear systems, this means compliance with standards such as AGMA 9005-E02, DIN 51513, and ISO 6743-6. Longhai's modern research center tests every batch of our industrial and open gear greases against strict kinematic viscosity, water washout, and extreme load parameters.
A sophisticated integration of state-of-the-art chemical blending facilities, high-performance automated bottling, and modern lab testing.
Longhai Technology is built on innovation. Our annual R&D investment accounts for more than 5% of annual revenue, supporting strategic partnerships with universities and research institutions to continuously optimize industrial lubrication technology.
Our production base spans 131 acres, with an annual capacity of 200,000 tons. It features intelligent production lines and a precision laboratory to meet the custom needs of global industrial projects.
We provide full-service manufacturing and packaging capabilities, tailoring formulation details to meet your specific mechanical and commercial requirements.
We develop fully synthetic and semi-synthetic lubricant formulations tailored to vehicle/equipment requirements, climatic conditions, and target market positions, meeting international standards such as API and ACEA.
We support everything from small-scale trial runs to large-scale industrial volume production across all categories, including engine oils, transmission fluids, and industrial lubricants, with flexible filling sizes.
Our facility holds certifications like ISO 9001 and IATF 16949. We provide authoritative third-party testing reports and full documentation to ensure regulatory compliance across global markets.
We provide industrial package design, label printing, and technical documentation support to help you build a professional brand image and launch your products quickly.
Developing high-performance open gear lubricants requires high chemical precision. Our state-of-the-art laboratory features advanced equipment, including inductively coupled plasma spectrometers, high-temperature high-shear viscometers, and four-ball extreme pressure testers.
Whether you need to replicate a legacy asphaltic open gear compound or develop a modern biodegradable synthetic ester spray for draglines, our engineering team can formulate and manufacture a product tailored to your exact mechanical specifications.
A step-by-step collaborative engineering workflow designed to ensure smooth execution, from initial product concept through to field implementation.
The industrial lubricants sector is shifting toward products that reduce energy loss and minimize environmental impact. The development of biodegradable synthetic esters, free from heavy metals and chlorinated compounds, represents a major advance for eco-friendly open gear lubricants.
Our R&D team is currently studying the integration of surface-active nanoparticles that fill micro-pitted surfaces under pressure. These formulations improve operational efficiency while cutting product consumption in automatic spray systems.
To support our R&D initiatives, our Zibo facility is equipped with dedicated analytical apparatus that monitors grease performance under high-pressure conditions.
Shandong Longhai Lubrication Technology Development Co., Ltd. operates under a strict management policy: "planning big strategies, focusing on technology, creating high quality, and keeping reputation." We continuously refine our production processes and upgrade quality controls, aiming to deliver long-term value for our clients.
"Dare to explore, innovate continuously, survive by quality, and promote development by efficiency" is our corporate philosophy. We expand our presence in the global market through reliable quality, competitive pricing, technical innovation, and dedicated brand support.
Products represent character, quality is life. With a customer-first approach, we offer honest and practical service. In the future, we will continue to use technological innovation as our engine and sustainability as our foundation, working with global partners to support long-term operations.
Reach out to our application engineers for help selecting products, designing customized formulations, or troubleshooting open gear spray systems.
Technical insights, selection guides, and maintenance strategies designed by our engineering team to address common queries about heavy-duty industrial systems.
Open gear lubricants are designed with high viscosity base fluids and heavy polymer additives. They are supplemented with extreme pressure (EP) agents and solid lubricating fillers like graphite and MoS2. When high operational pressures squeeze out the liquid fluid, these solid particulates remain on the gear teeth, creating a mechanical barrier that prevents direct metal-to-metal contact and scuffing.
Asphaltic open gear compounds rely on heavy residual binders and volatile solvent carriers. While they offer high adhesion, they can harden, crack, and trap contaminants over time, which accelerates abrasive wear. In addition, their solvent content presents disposal challenges. Modern synthetic-ester and semi-synthetic alternatives offer better pumpability in spray systems, lower consumption, and cleaner gear face inspections.
Spraying systems are used for larger open gear drives in mining and cement production. They use automated nozzles to apply exact amounts of lubricant directly onto the gear tooth flanks, which helps control consumption and keep dust out. Bathing application methods are typically used for smaller, slower-speed gears. The gears dip directly into a sump, requiring high fluid stability and resistance to oxidation.
Temperature variations affect the viscosity of base oils. In hot environments, such as cement kilns, the lubricant must have a high viscosity index (VI) to maintain its film strength. In cold conditions, like outdoor mining, the lubricant must remain pumpable in centralized automatic lubrication lines without clogging. This requires synthetic base oils with low pour points.
Our automated blending and packaging lines use metered filling systems that keep measurement variations within 1‰ to 2‰. We run checks at our ISO 9001 certified laboratory, analyzing every batch for kinematic viscosity, foaming tendencies, copper strip corrosion, and four-ball weld load. This testing ensures that our products meet consistent standards before shipment.
Our complete range of industrial and heavy transport lubricants, designed to maintain system reliability under high loads and harsh environments.
Longhai
