Fans - Finger Guards, Filters & Sleeves

Part Number	Description / PDF	Quantity
77-FF40 NTE Electronics, Inc.	FAN FILTER FOR 40X40MM	750
77-FF60 NTE Electronics, Inc.	FAN FILTER FOR 60X60MM	202
77-MG120 NTE Electronics, Inc.	FAN GUARD FOR 120 X 120M	239
77-MG40 NTE Electronics, Inc.	FAN GUARD FOR 40 X 40MM	480
77-MG80 NTE Electronics, Inc.	FAN GUARD FOR 80 X 80MM	135
77-FF80 NTE Electronics, Inc.	FAN FILTER FOR 80X80MM	191
77-MG60 NTE Electronics, Inc.	FAN GUARD FOR 60 X 60MM	300
77-FF120 NTE Electronics, Inc.	FAN FILTER FOR 120X120MM	642
77-MG92 NTE Electronics, Inc.	FAN GUARD FOR 92 X 92MM	348
77-FF92 NTE Electronics, Inc.	FAN FILTER FOR 92X92MM	274

Fans - Finger Guards, Filters & Sleeves

1. Overview

Fan accessories including finger guards, filters, and sleeves are critical components in thermal management systems. Finger guards prevent physical contact with rotating blades, filters ensure airflow purity, and sleeves optimize aerodynamic performance. These components are essential for maintaining equipment reliability, safety compliance, and energy efficiency in modern electronics, industrial machinery, and HVAC systems.

2. Main Types & Functional Classification

Type	Functional Characteristics	Application Examples
Perforated Metal Guards	Mechanical protection with 95% airflow retention	Industrial motors, power tools
Polymer Mesh Filters	Particulate filtration (5-50 m efficiency)	Server racks, medical devices
Aerofoil Sleeves	Flow guidance with 15-20% static pressure increase	Aerospace cooling systems
EMI Shielding Guards	Radiation suppression (30-100MHz range)	Telecom equipment

3. Structure & Composition

Finger guards typically use stamped aluminum alloys (6061-T6) or glass-reinforced nylon. Filters employ multi-layer media: pre-filters (PET non-woven), HEPA layers (borosilicate microfibers), and activated carbon. Sleeves are constructed from anodized aluminum or fiber-reinforced polymers with aerodynamic profiles optimized via CFD analysis. All components incorporate anti-vibration mounts and corrosion-resistant coatings.

4. Key Technical Specifications

Parameter	Value Range	Importance
Material Temp Range	-40 C to +150 C	Operational stability
Filter Efficiency	80-99.97% @ 0.3 m	Contamination control
Pressure Drop	5-50 Pa	Energy consumption
Noise Level	20-45 dB(A)	Environmental comfort

5. Application Fields

IT Infrastructure: Data center cooling systems
Industrial Automation: CNC machine tool cooling
Consumer Electronics: Gaming PC thermal management
Medical Equipment: MRI scanner thermal control

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
NMB Technologies	AeroGuard Pro	Integrated EMI shielding & variable pitch design
Sunonwealth	MagLev Filter Sleeve	Magnetic levitation bearing & 50,000h L10 life
Delta Electronics	SmartAir Guard	Piezoelectric vibration sensing & IoT integration

7. Selection Guidelines

Consider environmental factors (temperature/humidity), system airflow requirements (CFM vs static pressure), maintenance accessibility, and regulatory standards (UL/CSA/CE). For high-contamination environments, select filters with differential pressure indicators. In vibration-prone applications, specify anti-resonance sleeve designs.

Industry Trends

Market evolution focuses on smart integration (IoT-enabled condition monitoring), nanocoating technologies for self-cleaning filters, and additive manufacturing for complex aerodynamic geometries. Regulatory pressures drive demand for UL94 V-0 flame-rated materials and RoHS-compliant production processes. Forecasted CAGR of 6.2% (2023-2030) driven by edge computing infrastructure growth.