The 175FLW2 All-Metal Turbine Centrifugal Fan, serving as a direct replacement model for R2E175-AC77-15 and R2E175-AC77-05 units, is a heavy-duty industrial cooling solution manufactured by Lobisong. Constructed with robust iron blade impellers and powered by a high-efficiency external rotor AC motor, this 175mm backward curved centrifugal blower delivers superior airflow and maximum static pressure performance in high-impedance thermal environments. Equipped with maintenance-free double ball bearings, thermal overload protection, and an all-metal turbine housing, the Lobisong 175FLW2 iron blade fan ensures reliable, continuous operation and extended service life across telecommunications, frequency converters, HVAC air filtration, and industrial control cabinets.

As modern electronic enclosures and power equipment push towards higher power density, managing heat dissipation in space-constrained systems becomes critical. The Lobisong 175FLW2 All-Metal Turbine Centrifugal Fan is specifically engineered to resolve demanding thermal challenges where standard plastic blowers fail due to thermal fatigue or mechanical strain. Built with an all-metal turbine structure and precision-machined iron blade impellers, this motorized centrifugal fan provides exceptional mechanical strength, superior heat resistance, and long-term dimensional stability.

Designed as an exact drop-in replacement fan for R2E175-AC77-15 and R2E175-AC77-05 models, the Lobisong 175FLW2 centrifugal fan operates on backward curved dynamic principles. The iron blade wheel pulls intake air axially and accelerates it radially at high velocity, converting kinetic motion into high static pressure. This design allows the 175FLW2 backward curved centrifugal blower to push air efficiently through high-density dust filters, heat exchangers, and restricted airflow channels without cavitation or stalling. Lobisong integrates high-grade copper motor windings, precision dual ball bearings, and automatic thermal protection to guarantee maintenance-free reliability in harsh industrial environments.

1. Heavy-Duty All-Metal Turbine Construction

Unlike conventional plastic impellers that warp, degrade, or crack under prolonged thermal exposure, the Lobisong 175FLW2 iron blade fan features a 100% all-metal turbine structure. The iron blade impeller undergoes dynamic balancing to ISO 1940 Grade G2.5 standards. This minimizes operational vibration, protects bearing integrity, and enables continuous operation in demanding temperatures up to +70°C.

2. High Static Pressure Backward Curved Dynamics

The 175FLW2 backward curved centrifugal blower geometry delivers maximum aerodynamic efficiency by converting kinetic energy into static pressure. This enables the Lobisong 175FLW2 all-metal turbine centrifugal fan to overcome system impedance in tightly packed enclosures, maintaining high air volume delivery across filter matrices, cooling coils, and narrow ventilation ducting.

3. Direct R2E175-AC77-15 and R2E175-AC77-05 Compatibility

Engineered as a direct cross-reference unit, the Lobisong 175FLW2 centrifugal fan matches the exact mounting dimensions, electrical specifications, and mechanical housing of R2E175-AC77-15 and R2E175-AC77-05 fans. Original equipment manufacturers (OEMs) and field maintenance teams can retrofit equipment seamlessly without modifying existing mounting plates or electrical wiring.

4. Advanced External Rotor AC Motor Engineering

Lobisong integrates an advanced external rotor AC motor into the 175FLW2 iron blade fan. By positioning the motor rotor within the metallic impeller hub, the fan achieves a compact axial profile, superior heat dissipation, and optimized torque output. Built-in thermal overload protection shields the motor against electrical surges, phase loss, and locked-rotor conditions.

5. Superior Environmental Resilience and Lifespan

Featuring IP44/IP54 protection ratings, Class B/F insulation, and permanently lubricated dual ball bearings, the Lobisong 175FLW2 all-metal turbine centrifugal fan achieves an L10 operational lifespan exceeding 50,000 hours at 40°C. The anti-corrosive metallic finish protects internal components against industrial oil mist, ambient humidity, and mild airborne chemical contaminants.

The Lobisong 175FLW2 All-Metal Turbine Centrifugal Fan delivers targeted cooling performance across industrial and commercial sectors:

• Telecommunications & Network Infrastructures: Outdoor telecom cabinets, 5G base station enclosures, and server rack cooling systems.

• Industrial Power Electronics: Variable frequency drives (VFD), power inverters, voltage stabilizers, and high-voltage transformer cabinets.

• HVAC & Cleanroom Filtration Systems: Laminar flow cabinets, commercial air purifiers, HEPA air filtration units, and heat recovery ventilators.

• Automation & Industrial Equipment: CNC machine tools, industrial laser power supplies, automated manufacturing panels, and welding equipment.

• Medical & Precision Instruments: Thermal management for medical diagnostic systems, laboratory centrifuges, and cleanroom air handling.

Partnering with Lobisong for the 175FLW2 iron blade R2E175-AC77-15 replacement fan provides key commercial advantages for B2B buyers:

• Factory-Direct Cost Efficiency: Lobisong manufactures high-grade fans matching European engineering standards at competitive direct prices, lowering BOM procurement costs for OEMs.

• Extended Uptime & Lower Maintenance Costs: The robust iron blade turbine design prevents mechanical failure, reducing field service interventions and operational downtime.

• Tailored Customization Options: Lobisong offers customized wiring harnesses, connectors, speed control features, and specialized protective coatings to meet custom OEM specifications.

• Global Supply Chain Reliability: Produced under ISO9001 certified quality control, Lobisong provides consistent product quality, CE/RoHS compliance, and reliable bulk delivery.