Fan Guard Standards and Finger Protection Requirements According to EN ISO 13857

Why Are Fan Guards Critical Safety Components?

Wire fan guards are among the most important safety components used in rotating equipment systems. Their primary function is to prevent accidental access to moving blades while maintaining optimum airflow performance and ensuring long-term mechanical integrity. Especially in large axial fan assemblies where electric motors or hydraulic motors are mounted centrally, the structural design of the protective wire grille becomes a crucial element of machine safety.

Modern fan guard systems are designed not only to provide physical protection but also to comply with international safety regulations. Properly engineered fan guards help prevent injuries caused by unintended contact with rotating components and protect the equipment against foreign object intrusion. Therefore, wire spacing, structural rigidity, material quality, welding integrity, and dimensional tolerances must all be considered during the design process.

International Standards for Wire Fan Guards

High-quality wire fan guards are designed according to internationally recognized safety standards.

EN ISO 13857 – Safety Distances to Prevent Access to Hazardous Areas

EN ISO 13857 defines the safety distances intended to prevent upper and lower limbs from reaching dangerous moving parts. The standard replaced the former EN 294 and establishes the relationship between opening dimensions and the distance to hazardous components.

Finger protection is not determined solely by wire spacing. The distance between the fan blades and the protective grille must also satisfy the requirements specified in the standard. Consequently, many manufacturers employ optimized wire openings, typically between 4 and 8 mm, depending on the fan geometry and the required safety level.

EN ISO 14120 – Requirements for Machine Guards

EN ISO 14120 specifies the general requirements for the design and construction of fixed and movable guards. It addresses structural strength, fastening systems, impact resistance, and overall protective performance.

EN ISO 12100 – Risk Assessment and Safe Design Principles

This standard provides the framework for identifying hazards and implementing appropriate protective measures in machinery design.

CE Compliance

Protective fan guards used in machinery should support conformity with the European Machinery Directive and CE requirements.

RoHS and REACH Compliance

Materials, coatings, and surface treatments should comply with environmental and health regulations applicable in international markets.

Finger Protection and Wire Opening Design

Preventing finger access is one of the most critical requirements in fan guard engineering. Rather than defining a single maximum opening size, EN ISO 13857 establishes a relationship between opening dimensions and the distance from the hazardous rotating components.

Depending on application requirements, designers optimize:

• Wire spacing geometry

• Wire diameter

• Distance between guard and fan blades

• Mechanical rigidity

• Structural reinforcement

• Mounting configuration

High-safety fan guards are designed to eliminate the possibility of accidental finger access while maintaining adequate airflow and pressure performance.

Quality Requirements for Premium Fan Guards

High-quality fan guards should provide:

High-Strength Steel Construction

Carbon steel, galvanized steel, and stainless steel materials provide excellent mechanical properties and long service life.

Precision Resistance Welding

All joints must ensure structural integrity. Weld defects, cracks, and deformation are unacceptable.

Tight Manufacturing Tolerances

Concentricity, roundness, and dimensional accuracy are essential for vibration-free operation.

Corrosion Resistance

Premium fan guards may incorporate:

• Powder coating

• Zinc plating

• Galvanized finishes

• Stainless steel construction

These surface treatments provide superior corrosion protection in demanding environments.

Vibration Resistance

Large fan assemblies with centrally mounted electric motors or hydraulic motors generate dynamic loads. Therefore, fan guard structures must maintain dimensional stability under vibration.

Smooth and Safe Edges

Sharp edges and welding residues should be eliminated to maximize operator safety.

High-Performance Fan Guard Manufacturing by Voll Engineering (Voll Metal Solutions)

Voll Engineering, also known as Voll Metal Solutions, is one of the leading manufacturers specializing in high-quality wire fan guards designed according to international machine safety standards.

By utilizing advanced wire forming technologies, precision resistance welding processes, and high-strength steel materials, Voll Metal Solutions manufactures custom fan guards optimized for specific applications and safety requirements.

Wire spacing geometry, wire diameters, mounting configurations, and structural reinforcement are engineered according to EN ISO 13857 and EN ISO 14120 requirements. The company offers powder-coated, galvanized, and stainless steel solutions capable of providing exceptional durability and long service life.

Thanks to its engineering expertise and advanced manufacturing capabilities, Voll Metal Solutions has established itself as a trusted partner for customers seeking premium wire fan guards with superior safety performance.

Reliable Partner for High-Quality Fan Guard Solutions

Companies searching for:

• Fan guard standards

• Wire fan guard manufacturer

• Finger-safe fan guards

• EN ISO 13857 compliant fan guards

• Motor-mounted fan guard assemblies

• Industrial wire protective grilles

• High-quality welded fan guards

can rely on Voll Engineering (Voll Metal Solutions) as a leading supplier capable of delivering customized solutions with outstanding quality and reliability.

Modern wire fan guards represent an essential combination of safety, durability, precision engineering, and long-term performance.