Univis HVIs are highly effective antiwear industrial oils with an exceptionally high viscosity index. They are designed to ensure the stability of viscosity parameters and performance properties when used in a wide temperature range. Due to their resistance to viscosity changes, Univis HVI oils are recommended, for example, for hydraulic systems operating in conditions of significant temperature changes. Such systems are usually sensitive to changes in the viscosity of the oils used, since their accuracy depends on the stability of the viscosity parameters. Univis HVI oils have optimum fluidity at low temperatures; They are resistant to shear and viscosity loss. These properties ensure the performance of the lubricated equipment, for example, due to the reduction to minimum values of internal leaks in the pump under such severe operating conditions as high operating temperatures and pressures. These high-quality oils also provide very reliable wear protection for vane, piston and gear pumps. Univis HVI oils have excellent oxidative stability, which reduces deposits and improves pump and valve performance. Univis HVI oils were developed together with leading equipment manufacturers in order to best meet the most stringent requirements for lubricants, for example, for critical hydraulic systems, including high pressure pumps. Compliance with critical requirements of other components of the hydraulic system and compatibility with them are also important.
Benefits
- Unusually high viscosity index and excellent viscosity stability increase the accuracy of the equipment and reduce torque;
- Very low pour points allow maintaining excellent fluidity in harsh winter conditions;
- Exceptional rust and corrosion protection reduces the negative effects of moisture on equipment components and parts;
- Effective oxidative stability reduces deposits and improves valve performance;
- Suitable for use in hydraulic equipment in extremely cold conditions, such as mobile equipment operating at low operating temperatures or in very cold climates;
- High efficiency and smooth operation of hydraulic systems, due to the stability of the viscosity parameters, effective air and water separation, very good protection against foaming.
Scope of application
- To reduce the formation of deposits in equipment, the design of which includes servo valves with small gaps.
- Systems characterized by both cold start and high operating temperatures
- Systems that require high load bearing oil and wear protection
- Applications in which rust and corrosion protection are necessary, for example, in systems where small amounts of water are unavoidable.
- Hydraulic systems for which stability of the viscosity characteristics of the oil over a wide temperature range is critical.
- Hydrostatic Transmission and Accumulators
- They can be used in critical mechanisms and actuating systems for which the value of power consumption is limited and an increase in torque is not allowed, which can occur if the oil used becomes thicker due to loss of properties during operation.