Hydraulic Oil Classifications & Performance Categories
- Zinc-Free, Long-Life Hydraulic Oils
- Heat-Resistant, High-Wear-Protection Hydraulic Oils
- HVI (High Viscosity Index) Hydraulic Oils – Group II Base
- Heavy-Duty HVI Hydraulic Oils
- HLP Type Hydraulic Oils – Group II Base
- OEM-Approved High-Performance Hydraulic Oils
- Defense & Aviation Grade Hydraulic Oils
- Specialty Hydraulic Oils for the Metal Industry
- Fire-Resistant Hydraulic Fluids
A. Zinc-Free, Long-Life Hydraulic Oils
Features:
- Ashless (zinc-free) additive technology
- Reduced environmental impact
- Extended oil drain intervals
- Superior system cleanliness
Applications:
- Modern hydraulic systems sensitive to zinc
- Environmentally regulated zones
- Plastic injection molding machines
- High-precision CNC systems
B. Heat-Resistant, High-Wear-Protection Hydraulic Oils
Features:
- Group II base oils with thermal stability
- Oxidation & wear protection
- Zinc-free composition
Applications:
- Gas & steam turbines
- Hydraulic turbines
- Power plants
- Copper alloy pump systems
C. HVI (High Viscosity Index) Hydraulic Oils – Group II Base
Features:
- Viscosity stability in wide temp ranges
- High thermal & shear stability
- Extended oil life
Applications:
- Hydraulic systems >60°C
- Cold climate hydraulics
- Heavy-duty machinery
- Press machines
D. Heavy-Duty HVI Hydraulic Oils
Features:
- Anti-corrosion & oxidation properties
- Stable viscosity under load
- Extreme environment reliability
Applications:
- Mobile equipment with temp variation
- Mining & earth-moving machinery
- Outdoor hydraulic systems
E. HLP Type Hydraulic Oils – Group II Base
Features:
- DIN 51524 Part 2 HLP standard
- Wear protection, oxidation & thermal resistance
- Anti-wear & anti-foam properties
Applications:
- Industrial precision hydraulics
- Mobile equipment
- Presses, elevators, CNC machinery
F. OEM-Approved High-Performance Hydraulic Oils
Features:
- OEM compliance
- Superior cleanliness
- Advanced anti-wear & oxidation protection
- Low sludge formation
Applications:
- Construction & mining equipment
- Injection molding machines
- Hydraulic presses
- Air compressors, forming machines
G. Defense & Aviation Grade Hydraulic Oils
Features:
- Military-grade specs (MIL-PRF-46170, 5606)
- Low-temp fluidity
- High oxidation & wear protection
Applications:
- Military vehicles
- Aerospace hydraulic systems
- Defense machinery
H. Specialty Hydraulic Oils for the Metal Industry
Features:
- Dual-purpose: hydraulic & lubrication
- Low residue formulation
- Safe for incidental food contact
- Excellent demulsibility
Applications:
- Aluminum & copper processing
- Food industry hydraulics
- Rolling mills & extrusion equipment
Key Benefits of Modern Hydraulic Oils
| Benefit | Description |
|---|---|
| Zinc-Free | Eco-friendly, safe for sensitive equipment |
| High Viscosity Index | Stable viscosity in varying temperatures |
| Wear Protection | Reduces failure, extends oil life |
| Thermal & Oxidative Stability | Suitable for high-temp environments |
| OEM & Military Specs | Assured performance in specialized systems |
| Broad Compatibility | Used across industrial, mobile, military sectors |
Typical Applications by Oil Type
| Hydraulic Oil Type | Key Applications |
|---|---|
| Zinc-Free Oils | CNC machines, injection molding |
| Heat-Resistant Oils | Turbines, power plants |
| HVI Oils | Temperature extremes, long operation |
| HLP Type Oils | Precision hydraulics, mobile equipment |
| OEM-Approved Oils | Construction & heavy machinery |
| Defense & Aviation Oils | Military vehicles, aircraft |
| Metal Industry Oils | Aluminum, copper, food-safe hydraulics |
Hydraulic oils are integral to reliable and efficient hydraulic system operation. Modern hydraulic fluid technology addresses not only the need for energy transmission but also for system protection, environmental safety, and cost optimization. With tailored formulations to suit diverse operational requirements — from power generation turbines to defense vehicles — hydraulic oils today represent a critical element in industrial sustainability and operational excellence.
I. Fire-Resistant Hydraulic Fluids
Special fluids designed for high fire-risk hydraulic systems, offering resistance to ignition and safety in industrial operations.
Fire Resistance Properties:
- High auto-ignition temperature
- Resistance to spontaneous ignition
- Self-extinguishing characteristics
- Thermal stability under severe conditions
Environmental Safety:
- Biodegradable and non-toxic
- Minimal environmental impact
- Free from harmful mineral components
Applications of Fire-Resistant Hydraulic Fluids
| Application | System/Equipment | Reason for Use |
|---|---|---|
| Die-Casting & Furnaces | Die-Casting Machines | Exposure to molten metals |
| Plastic Injection Molding | Injection Molding Machines | Risk of ignition from heated molds |
| Hydraulic Forging Presses | Forging Systems | Extreme heat & pressure |
| Mining Equipment | Hydraulic Mining Machinery | Hazardous, confined environments |
| Steel & Metal Processing | Hot Conveyors, Presses | Exposure to heat & molten materials |
Benefits of Fire-Resistant Hydraulic Fluids
Operational Safety:
- Reduces fire hazards & accidents
- Prevents system failures from ignition
- Safe for fire-prone zones
Performance in Extreme Conditions:
- Superior thermal stability
- Continuous functionality under pressure & heat
- Minimizes downtime
Environmental Responsibility:
- Biodegradable formulations
- Non-toxic
- Supports sustainability goals
Regulatory Compliance:
- Certified by international authorities (e.g., Factory Mutual)
- Meets global safety standards
- Enhances safety & sustainability credentials
Fire-resistant hydraulic fluids are critical components in modern hydraulic systems operating in high-risk industrial environments. By utilizing advanced synthetic formulations such as polyol ester-based fluids, industries can ensure enhanced fire safety, superior operational performance, and environmental sustainability. Their application in sectors like metalworking, mining, plastic molding, and steel production highlights their indispensable role in safeguarding assets, personnel, and operational continuity.