Hydrolic Oils

Hydraulic oils perform a wide range of critical functions within hydraulic systems. These functions include power transmission, wear protection, sealing, corrosion prevention, operation under high pressures, air release, foam suppression, cooling, extended service life, excellent water separation characteristics, environmental compatibility and low particle contamination levels.

Selecting the correct viscosity is essential for ensuring that all these functions are performed effectively. Using a hydraulic oil with a higher viscosity than required can lead to hydro-mechanical losses and cavitation damage, which causes erosion of metal surfaces. Conversely, selecting an oil with a lower viscosity than specified can result in leakage, increased wear, contamination and reduced component service life.

Hydraulic oils must be fully compatible with seals, coatings, paints, hoses, metals and plastic materials used within hydraulic systems, without causing adverse effects. As hydraulic oils are exposed to chemical, thermal and mechanical stress during operation, they gradually age over time. Therefore, strong oxidation resistance and long-term stability are essential properties. In addition, hydraulic oils should offer excellent filterability, allowing contaminants to be effectively retained by filtration systems.

Features of Opet Hydraulic System Oils

Opet Hydraulic System Oils are designed for use in a wide range of hydraulic systems and off-highway equipment. Formulated with high-quality base oils and advanced additive technology, they deliver outstanding performance while protecting hydraulic systems against oxidation, rust and foaming. These properties help extend equipment life and support longer oil drain intervals.

To help users select the most suitable viscosity grade for their applications, Opet Hydraulic System Oils are available in a comprehensive range of ISO VG viscosity grades.

DURA Series

The DURA Series consists of high-performance hydraulic oils formulated with premium base oils and specially developed additive technology. Thanks to their excellent filterability, they ensure smooth and reliable system operation.

The DURA Series is available in the following viscosity grades:

• DURA 32 (ISO VG 32)
• DURA 46 (ISO VG 46)
• DURA 68 (ISO VG 68)
• DURA 100 (ISO VG 100)

Performance Levels: DENISON HF-2 / HF-1 / HF-0; DIN 51524 Part 2 (HLP); EATON Brochure 03-401-2010; EATON Lubricant Specification E-FDGN-TB002-E; FIVES CINCINNATI P-70 / P-69 / P-68; GM LS-2; ISO 11158 HM; JCMAS HK; SAE MS 1004; U.S. STEEL 126

DURA T Series

The DURA T Series consists of premium hydraulic oils formulated with a high viscosity index, making them suitable for operation across a wide temperature range. They provide outstanding protection against wear, even under severe operating conditions and high-pressure applications commonly encountered in hydraulic systems and construction equipment.

The DURA T Series is available in the following viscosity grades:

• DURA T 15 (ISO VG 15)
• DURA T 32 (ISO VG 32)
• DURA T 46 (ISO VG 46)
• DURA T 68 (ISO VG 68)
• DURA T 100 (ISO VG 100) (ISO VG 100)

Performance Levels: DENISON HF-2 / HF-1 / HF-0; DIN 51524 Part 3 (HVLP); EATON Brochure 03-401-2010; EATON Lubricant Specification E-FDGN-TB002-E; FIVES CINCINNATI P-68 / P-69 / P-70; ISO 11158 HL, HM, HV; JCMAS HK; SAE MS 1004; U.S. STEEL 126