Understand the Basics of Hydraulic Oil 68 | Types, Key Function, & More
Hydraulic systems are significant for a broad range of tools, from industrial machines to farm machinery. Furthermore, hydraulic systems convey force from one point to another through a fluid. These systems include components, such as pumps, cylinders, and valves, that require regular maintenance to function properly and last longer. Nevertheless, this fluid is typically hydraulic oil 68, and the entire concept is based on Pascal’s law. Hydraulics are widely used across industries and play an imperative role in improving operational efficiency.
In this detailed blog post, we will provide an end-to-end guide to industrial hydraulic oil 68, including its types and more.
What is Hydraulic Oil 68?
It is a high-quality, medium-viscosity mineral oil that is suitable for high-pressure, high-load, or high-temperature hydraulic systems. The “68” in Hydraulic Oil 68 refers to its kinematic viscosity, which is 68 mm²/s at 40°C, and is thicker than ISO 32 or 46 hydraulic fluids. It makes it more suitable for maintaining a lubricating film and preventing wear.
Furthermore, it contains advanced anti-wear, anti-rust, and anti-oxidation additives that protect hydraulic pumps, vanes, and gear systems from corrosion and wear. It also has good air release, low foaming, and water separation properties. Additionally, it is suitable for heavy-duty applications such as construction equipment (excavators, cranes), forestry machinery, plastics molding machines, and industrial circulation systems that require high load-carrying capacity.
What are the Fundamental Types of Hydraulic Oil 68?
ISO VG 68 hydraulic oil is a synthetic lubricant or high-viscosity mineral-based oil designed for heavy-load industrial systems and machinery operating in high-pressure environments. Thus, it is often used in diggers and cranes. Likewise, common types of hydraulic oil manufactured by the best hydraulic oil 68 supplier include anti-wear (AW) 68, high-viscosity index (HVLP) 68, and Zinc-free/ashless 68, delivering superior corrosion resistance and thermal consistency.
1. AW 68 (Anti-Wear) Hydraulic Oil
It is an advanced-quality, mineral-based lubricant with an ISO viscosity grade of 68. Additionally, the hydraulic oil 68 supplier ensures that the hydraulic oil is designed for mobile and industrial systems. It uses phosphorus/zinc additives to protect high-pressure vane, piston, and gear pumps from wear. It offers superior thermal resilience and corrosion resistance, ensuring smooth operation in demanding, heavy-load, and high temperature application.
Key Functions of AW 68 (Anti-Wear) Hydraulic Oil
- It provides wear protection
- It has efficient power transmission
- It offers oxidation and thermal consistency
- It provides rust and corrosion protection
- It delivers foam control and air release
2. High Viscosity Index (HVI) 68
It is a premium-grade shear hydraulic oil 68 with an ISO VG 68 viscosity rating, created to maintain stable thickness across a wide operating temperature range. Also, it ensures optimal, long-term lubrication for high-pressure mobile machinery and heavy-duty industrial applications.
Key Functions of High Viscosity Index (HVI) 68
- It offers superior viscosity stability across temperature extremes
- It has advanced anti-wear protection
- It gives exceptional thermal and oxidation stability
- It offers rapid air release and low foaming
- It provides efficient water separation (demulsibility)
3. Synthetic-Based 68
It refers to a high-performance industrial hydraulic oil 68 lubricant with a viscosity grade of ISO VG 68, formulated primarily from synthetic base oils rather than conventional mineral oil. Moreover, the “68” denotes a kinematic viscosity of 68 mm²/s (centistokes) at 40°C, implying it is appropriate for moderate-load applications, often in compressors, gearboxes, and hydraulic systems.
Key Functions of Synthetic-Based 68
- It provides high-temperature thermal stability
- It provides superior oxidation resistance properties
- It provides superior water separation smoothly
- It provides excellent cold-flow properties
- It provides improved system cleanliness
4. Zinc-Free / Ashless 68
Zinc-Free/Ashless 68 is an excellent-performing ISO VG 68 hydraulic oil formulated without metal-based additives or zinc, helping prevent hazardous deposits and sludge in sensitive systems. Also, an industrial hydraulic oil 68 provides premium anti-ear protection for high-load industrial machinery and is exceptional for systems containing yellow metals, silver, or bronze.
Key Functions of Zinc-Free / Ashless 68
- It provides exceptional filterability
- It effectively splits the superior water in case of contamination
- It prevents the formation of foam and decreases the compact air trap
- It is environmentally friendly
- It reduces maintenance costs by protecting against wear
What are the Vital Applications of Hydraulic Oil 68?
Here, we have mentioned some imperative applications of hydraulic oil that you must know before planning to purchase it from the leading hydraulic oil 68 supplier:
1. It Provide Reailable Performance in the Construction Industry
Hydraulic Oil 68 is essential for heavy machinery in the construction industry, such as excavators, cranes, bulldozers, and loaders. Nevertheless, this oil ensures smooth power transmission even under high pressure and reduces friction between the machine’s internal parts. Its stable viscosity maintains consistent lubrication even in extreme temperatures, reducing the risk of overheating.
2. It Plays Integral Part in the Manufacturing Industry
In manufacturing plants, this oil is a trusted lubricant for hydraulic presses, injection molding machines, and CNC systems. Also, it provides smooth and accurate motion control, improving production precision. High thermal stability manages heat buildup, which is crucial for continuous operations. It’s excellent filtration compatibility traps contaminants, keeping the system clean and efficient. In industrial environments with nonstop production, Hydraulic Oil 68 extends service life and reduces breakdowns, improving operational efficiency and optimizing manufacturing costs.
3. It Offers Versatile Use in the Agricultural Industry
In the agricultural sector, this oil ensures smooth, reliable operation of lifting systems, steering mechanisms, and load-handling operations. Furthermore, its anti-wear properties protect moving components from wear, while its corrosion resistance protects them from moisture and dirt. Likewise, it delivers consistent performance, even under long working hours and uneven terrain. Operators gain better machine control, fuel efficiency improves, and increased equipment reliability enhances both overall productivity and cost-effectiveness.
4. It Offers Major Application in the Transportation Industry
Hydraulic Oil 68 is a reliable, high-performance solution for marine vessels, offshore rigs, and heavy-duty transport equipment. Its rust-resistant and oxidation-resistant properties keep equipment safe in saltwater and humid environments. It ensures smooth, stable operation of hydraulic steering systems, deck machinery, winches, and lifting cranes. Therefore, its long service life reduces maintenance frequency, improves safety standards, and makes marine and transport operations efficient, secure, and cost-effective.
5. Energy, Power Generation, and Heavy Industrial Systems
In the energy sector, hydraulic oil 68 is a high-performance lubricant for turbines, power plant equipment, and heavy industrial machinery. This oil provides stable, safe operation of high-pressure hydraulic circuits, ensuring smooth energy transmission. Its superior thermal resistance prevents heat-induced degradation, while anti-wear additives provide long-term protection to critical components.
It’s Time to Wrap Things Up!
When choosing the best engine oil for your vehicle, ensure you carefully consider the equipment requirements, viscosity, and other oil properties in tandem. It will guide you to make an informed decision. Nevertheless, we hope this comprehensive guide has provided you with exclusive details on hydraulic oil, from its vital types to its major applications.
Well! If you are searching for the best and leading company who manufacture in-house hydraulic oil 68, look no further than Sulf Lubricant. By leveraging advanced technologies, we ensure they add a protective layer to the system. Also, it helps maintain pressure, decrease wear, and ensure smooth operation under demanding conditions. So, don’t wait any longer. Connect with us today!
Frequently Asked Questions
Hydraulic oil 32 is more fluid and suitable for cold applications or lighter loads, as it flows well at lower temperatures, whereas hydraulic oil 68 is more viscous and suitable for high-temperature applications or heavier loads, as the numbers indicate the viscosity at 40°C (centistokes).
Rando HD ISO 68 oils are developed using advanced base-oil technology and are designed to provide strong protection for hydraulic pumps.
Hydraulic oils are very important for extending the lifespan of industrial equipment by ensuring the hydraulic system operates properly. Hydraulic oils serve as lubricants, coolants, and power transmitters in the system, ensuring equipment operates properly even under tough conditions.
With time, the hydraulic oil in your tools will break down and become less effective. This is a natural process that occurs for several reasons. The greater the pressure in a hydraulic system, the more the oil will compress and break down. However, arguably the most common reason is contamination.