Univis HVI Hydraulic Oil

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Product Description
Exxon Univis HVI is a line of premium performance anti-wear hydraulic oils characterised by their unusually high viscosity indexes. They are engineered to maintain close viscosity control over wide temperature range applications. Because of their resistance to viscosity change, Univis HVI oils are recommended for hydraulic systems that are subject to wide temperature variations. Many of these systems are sensitive to changes in viscosity of the hydraulic oil, since they depend on uniform viscosity for hydraulic accuracy. They exhibit optimum flow characteristics at sub-zero temperatures and the oils are resistant to shearing and viscosity loss so that system efficiency is maintained and internal pump leakage is minimized at high operating temperatures and pressures. These high quality hydraulic oils also provide very good anti-wear protection for high-pressure vane, piston and gear pumps. The Univis HVI oils are designed with excellent oxidation stability reducing deposit formation and improving pump and valve performance. They were developed in conjunction with the major OEMs to meet the stringent requirements of severe hydraulic systems using high pressure, high output pumps as well as handling the critical requirements of other hydraulic system components.

Features and Benefits
The Exxon Univis HVI oils provide outstanding viscosity control over a wide temperature range. Their excellent oxidation resistance allows extension of oil and filter change intervals while assuring clean systems. Their high level of anti-wear properties and excellent film strength characteristics result in exceptional equipment performance
that not only results in fewer breakdowns but helps improve production capacity.

The Univis HVI oils provide the following benefits:

Unusually high viscosity index and excellent viscosity control characteristics improves machine accuracy and reduces torque
Very low pour points maintains excellent fluidity conditions at low temperatures
Suitable for use in hydraulic equipment operating in very cold conditions, such as cold stores and mobile equipment operating in very cold climates
High performance and smooth hydraulic operations derived from uniform viscosity control, fast air release, very good foam control
Exceptional rust and corrosion protection reduces the negative effects of moisture on system components
Effective oxidation stability reduces deposits and improves valve performance

Applications

Hydraulic systems critical to uniform hydraulic oil viscosity over a wide temperature range
Hydrostatic transmissions and dash pots
They can also be used in fine instruments and other mechanisms where power input is limited and increases in torque due to the lubricant thickening cannot be tolerated
To reduce deposit formation in equipment where close clearance servo-valves are used
Systems where cold startup and high operating temperatures are typical
Systems requiring a high degree of load-carrying capability and anti-wear protection
Applications where rust and corrosion protection are an asset such as systems where small amounts of
water are unavoidable

Click here for the Univis HVI PDF Spec Sheet

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Last Updated: Friday, 24 May 2013 17:34

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Univis HVI Hydraulic Oil

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