Ashless Hydraulic Oil
Eco-friendly hydraulic oil with zinc-free anti-wear technology, engineered for precision hydraulic systems and servo control equipment.

Product Overview
ARNOCO Ashless Hydraulic Fluid is formulated with premium base oils and a zinc-free anti-wear additive package. Free from zinc salts, it prevents deposit formation common in traditional zinc-based hydraulic fluids, making it ideal for precision hydraulic systems requiring the highest levels of oil cleanliness.
Widely used in hydraulic systems for servo machines, precision machine tools, injection molding machines, die-casting machines, and more. Effectively protects precision components such as servo valves and proportional valves, extends equipment lifespan, and enhances system stability.
Core Advantages
Zinc-free, eco-friendly formula
Features zinc-free anti-wear technology to prevent zinc salt deposition, protecting precision servo and proportional valves from contamination.
Suitable for precision equipment
Superior filtration and cleanliness for high-precision hydraulic and servo control systems
Low Sediment
Special additive formula reduces sludge and varnish formation, keeping the system clean internally.
Technical Specifications
| Test Items | Typical Value |
|---|---|
| Viscosity Grade | ISO VG 32 / 46 / 68 |
| Flash Point | ≥ 210°C |
| Pour Point | ≤ -18°C |
| Viscosity Index | ≥ 100 |
| Copper Strip Corrosion | 1 Level |
| Filter | Outstanding |
Typical Applications
Servo Hydraulic System
CNC Servo Systems, Electro-Hydraulic Servo Valve Control Systems
Precision Machine Tools
High-precision machining equipment such as machining centers, grinders, and coordinate boring machines
Injection Molding Machines
All-Electric Injection Molding Machines, Precision Injection Molding Equipment
Test Device
Material testing machines, fatigue testing machines, and other precision test equipment
