**FUCHS RENOLIN ZAF 5 – 20L

High-Performance Zinc-Free Hydraulic & Lubricating Oil**

Product Overview

FUCHS RENOLIN ZAF 5 is a premium-quality, zinc-free hydraulic and lubricating oil designed for high-performance machinery operating in environments where non-zinc formulations are required or strongly preferred. Engineered using highly refined mineral base oils, combined with an advanced ashless additive system, this lubricant delivers excellent wear protection, outstanding thermal stability, and superior oxidation resistance. It is suitable for hydraulic systems, circulation lubrication, lightly loaded bearings, and general industrial machinery applications requiring a low-viscosity, high-purity hydraulic oil.

RENOLIN ZAF 5 is particularly valued in industries where zinc or heavy-metal content can interfere with catalytic systems, sensitive alloys, fine filtration systems, or environmentally regulated processes. The ashless, zinc-free formulation makes it a dependable choice for production plants, precision machinery, offshore systems, environmentally sensitive environments, and industries requiring cleaner, deposit-free hydraulic lubrication.

The 20-litre package is ideal for workshops, factories, mobile service vehicles, and maintenance operations seeking efficient handling and economical use for small to medium-sized hydraulic or lubrication systems.

Specifications & Approvals

FUCHS RENOLIN ZAF 5 is formulated to meet or exceed a broad range of performance and manufacturing requirements for zinc-free hydraulic oils. Its ashless technology positions it competitively alongside well-known zinc-free HLPD or HF-type oils used in global industrial systems.

Meets or Exceeds the Following Performance Levels:

• DIN 51524 Part 1 (HL Category)

• Meets general requirements for zinc-free ashless hydraulic oils

• Suitable for machinery requiring ashless anti-wear additives

• Compatible with fine filtration systems

• Designed for applications requiring rapid air release, low foaming, and improved sludge control

Key Performance Features:

• Zinc-free (ashless) anti-wear system

• Excellent air release and foam resistance

• Outstanding oxidation stability for long oil life

• Protects against rust and corrosion

• High purity, low-viscosity hydraulic oil

• Low deposit-forming tendency under thermal load

• Excellent demulsification characteristics

Key Features & Benefits

1. Zinc-Free Anti-Wear Performance

RENOLIN ZAF 5 contains no zinc or heavy-metal additives, relying instead on advanced ashless anti-wear chemistry. This ensures effective protection of pumps, valves, hydraulic pistons, and lubrication points without contributing to metallic ash formation that can cause deposits or catalyst poisoning in sensitive systems.

2. Superior Thermal and Oxidation Stability

The oil maintains excellent stability under elevated temperatures, resisting oxidation and the formation of sludge, varnish, or acidic by-products. This ensures extended drain intervals and cleaner system internals, especially in high-speed machinery or hydraulic systems operating continuously.

3. Excellent Demulsibility

Hydraulic systems exposed to moisture—such as outdoor machinery, compressed-air systems, or environments with condensation—benefit from RENOLIN ZAF 5’s ability to quickly separate water from oil. This prevents emulsions, reduces corrosion, and maintains lubrication performance.

4. Low Viscosity for High-Speed or Precision Systems

ISO VG 5 is an ultra-low viscosity classification designed for applications requiring rapid flow, reduced drag, and efficient lubrication of lightly loaded or high-speed components. It is particularly suitable for precision components, light spindle systems, fine lubrication points, and hydraulic systems requiring very low viscosity fluids.

5. Excellent Protection Against Rust & Corrosion

Corrosion inhibitors protect metallic components from moisture exposure, improving long-term reliability in demanding environments such as offshore, food processing, high-humidity plants, and outdoor machinery.

6. Reduced Deposit Formation

The ashless additive system generates fewer deposits compared to zinc-based oils, reducing the risk of sticky valves, clogged filters, varnish, and sludge build-up.

7. Outstanding Air Release and Foam Control

Proper air release ensures rapid hydraulic response and reduces the likelihood of cavitation damage in pumps. Foam resistance increases operational stability and prevents erratic system behavior.

8. Wide Material Compatibility

Safe for use with common elastomers, seals, gaskets, and materials typically found in hydraulic circuits, air lubrication systems, and circulating oil systems.

Applications

FUCHS RENOLIN ZAF 5 is recommended for a wide variety of applications requiring zinc-free lubrication or ultra-low viscosity oils:

Hydraulic Systems:

• High-speed low-pressure hydraulic circuits

• Laboratory or precision hydraulic controls

• Machines sensitive to zinc or metallic ash formation

Air Line Lubrication:

• Air-driven tools and equipment requiring light, ashless oils

• Pneumatic controls and actuators

• Systems sensitive to deposit formation

Circulating & Spindle Lubrication:

• High-speed spindle bearings

• Precision machinery in manufacturing and machining centres

• Instruments requiring rapid oil flow

Industrial Machinery:

• Lightly loaded bearings

• Textile machinery

• Food packaging equipment (non-food-contact)

• Printing machinery with fine lubrication points

Other Uses:

• Oil mist lubrication systems

• Special applications in electronics manufacturing

• Machinery requiring fast-draining, extremely low-viscosity lubricants

As always, users should consult manufacturer recommendations to ensure compatibility with system requirements.

Typical Physical Properties

Values are typical and subject to normal production tolerances.

Handling & Storage Advice

• Store in sealed containers in a cool, dry environment away from direct sunlight.

• Avoid contamination with dust, water, or incompatible lubricants.

• Keep container tightly closed when not in use.

• Use dedicated dispensing equipment to avoid cross-contamination.

• Do not mix with zinc-based oils unless system has been thoroughly flushed.

• Dispose of used oil and packaging in accordance with local regulations.

• Consult the Safety Data Sheet for full safety and environmental information.

Advantages for Workshops, Factories & Industrial Users

• Provides reliable lubrication where zinc-free formulas are mandatory

• Supports extended oil life and reduced maintenance downtime

• Ideal for precision equipment, pneumatics, and high-speed lubrication points

• Reduces system deposits, varnish and filter blockage

• Suitable for environmentally sensitive or regulated applications