Hydraulic support oil for electro-hydraulic control systems is a high-performance functional fluid specifically engineered to meet the precision and reliability demands of electro-hydraulic (EH) control systems. Serving as the core medium in equipment like mining hydraulic supports, industrial servo mechanisms, and heavy machinery, it integrates power transmission, lubrication, corrosion protection, and heat dissipation capabilities-all while enabling the precise signal-response synergy of EH systems . Formulated with premium base oils (mineral, synthetic, or biodegradable derivatives) and advanced additives (anti-wear, antioxidant, anti-foaming, and viscosity index improvers), it complies with standards such as MT/T76-2011 and ISO 4406, ensuring compatibility with sensitive EH components like servo valves and high-pressure pumps.
Key Features
1. Exceptional Cleanliness & Contamination Resistance
A critical requirement for EH systems, this oil meets strict cleanliness standards (NAS 6-7 grade or ISO 4406 18/16/13) . Its advanced filtration compatibility prevents solid particles (≥4μm) from clogging precision valves and sensors, minimizing wear and control failures. This ensures long-term stability in harsh environments like mining, where coal dust and debris are prevalent.
2. Superior Viscosity Stability & Responsiveness
Optimized for ISO VG 32/46/68 grades, it maintains consistent viscosity across -30℃ to 60℃ . The excellent viscosity index (≥130) ensures rapid hydraulic signal transmission, enabling EH systems to achieve precise, lag-free movements-essential for applications like hydraulic support synchronization and CNC machine tool control.
3. Robust Anti-Wear & Extreme-Pressure Protection
Formulated with zinc-free or low-zinc additive packages (e.g., ADDITIN® RC 9205), it forms a durable lubricating film on friction surfaces . It withstands pressures up to 31.5 MPa, protecting pumps, cylinders, and seals from abrasive wear in high-load EH operations, extending component lifespan by 30%+.
4. Excellent Compatibility & System Safety
It exhibits ideal compatibility with common seal materials (nitrile rubber, fluorine rubber) per DIN 51524, avoiding swelling or cracking . For high-risk environments, fire-resistant variants (e.g., phosphate ester-based EH oil) offer flash points >280℃, reducing fire hazards in confined spaces . It also resists foaming and emulsification, ensuring stable power transmission.
5. Environmental Adaptability & Longevity
Modern formulations boast biodegradability (>60%) and low toxicity, aligning with eco-friendly mining and industrial trends . Enhanced oxidation and hydrolysis stability (oxidation life >2000h) extends oil change intervals, cutting maintenance costs while minimizing environmental impact.
As the "blood" of electro-hydraulic control systems, this specialized hydraulic support oil directly impacts equipment precision, reliability, and operational efficiency. For industries pursuing high-performance, low-downtime EH operations, it is an indispensable solution, driving productivity while meeting stringent quality and environmental standards.
