Primary Air Fan Slider 4TY0431 for FAF/PAF Moving-Blade Adjustable Axial Fans

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Product Overview

The Primary Air Fan Slider 4TY0431 is a critical component of the pitch control mechanism in FAF and PAF type moving-blade adjustable axial flow fans. Positioned between the guide rails and the adjustment rods, it facilitates precise blade angle modulation, load transmission, and operational guidance.

As a vital wear part for ensuring airflow accuracy and unit stability, it is widely utilized in the air and flue gas systems of thermal power plants. It is a high-priority spare part for routine inspections and overhauls of adjustable axial fans.

Engineering Excellence

Manufactured strictly according to original FAF/PAF maintenance specifications, the 4TY0431 features:

Tensile Strength: Stable at $200\text{--}250\text{ MPa}$.
Manufacturing Quality: Rigorous casting process; free of sand holes, blowholes, cracks, or shrinkage porosity.
Precision Fit: Design clearance between slider and guide rail is maintained at $0.05\text{ mm to }0.15\text{ mm}$.
System Synergy: Works in tandem with components like slider 4TY0432, ID fan slider S4GA3053, and shaft sleeve S4GA0260 to ensure high sensitivity and reliability in the pitch control system.

Technical Features & Advantages

1. High-Strength Material

Cast from high-strength alloys, the slider maintains a tensile strength of $200\text{--}250\text{ MPa}$. This ensures it can withstand the driving forces of the adjustment mechanism and operational vibrations without deformation or fracture.

2. Defect-Free Precision Casting

Utilizing advanced precision casting and multi-stage quality inspections, the 4TY0431 offers a high surface finish and uniform internal structure. This eliminates stress concentration points, significantly extending the service life of the spare part.

3. Smooth Operation & Zero Jamming

With a calibrated fit clearance of $0.05\text{--}0.15\text{ mm}$, the slider ensures accurate guidance without sticking or abnormal noise. Integrated adjustment shims allow for flexible pre-tightening force based on specific installation conditions.

4. High Compatibility & Interchangeability

Produced to original OEM dimensional standards, it is a direct replacement for FAF/PAF factory parts. It is also interchangeable with models like 4TY0432 and S4GA3053, simplifying inventory management for power plant maintenance teams.

5. Wear and Corrosion Resistance

The surface undergoes specialized treatment to resist dust, moisture, and corrosive media common in power plant environments. Under normal conditions, it offers a stable service life of 8,000 to 12,000 hours.

FAF/PAF Fan Complementary Components Synergy Table

Application Scenarios

The Primary Air Fan Slider 4TY0431 is specifically designed for FAF and PAF type adjustable axial flow fans. Its application covers the entire lifecycle of power plant maintenance:

Routine Maintenance: Monitoring for wear and lubrication status.
Minor Overhauls: Checking for clearance deviations and surface integrity.
Major Overhauls: Full replacement to restore the pitch control system to factory-spec sensitivity and reliability.

By choosing reliable 4TY0431 sliders, power plants can effectively reduce fan vibration, eliminate airflow fluctuations, and lower overall O&M costs.

Primary Air Fan Slider 4TY0431 for FAF/PAF Moving-Blade Adjustable Axial Fans