DIGNX - Professional Animal Husbandry Machinery
High-Efficiency Barn Fans | 4-Blade & 6-Blade Cooling Solutions | NexAgri
Industrial Barn Fans for Dairy Farms
Precision Ventilation Engineering

Beat the Heat,
Keep Your Yield High

Heat stress starts at just 25°C. Our industrial-grade 4-blade and 6-blade fans provide the critical 2.5m/s wind speed needed to cool cows' core temperatures, preventing the typical 15% summer milk drop.

IE3 High-Efficiency Motors
4 & 6 Blade Options
Corrosion Resistant
View Specifications

Why Modern Barns Need NexAgri Fans?

Poor air quality and heat are hidden profit killers. We solve the environmental challenges that limit your herd's potential.

Eliminate Heat Stress

Lower body temperatures through high-velocity airflow, keeping cows active at the feed bunk even in peak humidity.

Ammonia Removal

Constant air exchange flushes out harmful gases, significantly reducing the risk of respiratory issues in calves and cows.

Drier Alleyways

Rapid moisture evaporation keeps floors drier, reducing digital dermatitis and improving overall hoof health.

Energy ROI

Engineered to deliver high CFM (Cubic Feet per Minute) with minimal wattage, paying for itself through saved milk production.

Strategic Ventilation

4-Blade vs. 6-Blade Configuration

Choosing the right blade count is the difference between simple air movement and scientific cooling.

6-Blade Barn Fan
6-Blade High Volume

6-Blade Industrial Fan

"Maximum Air Exchange for Large Barns"

  • Highest CFM: Moves a massive volume of air to ensure rapid total air exchange in wide-span barns.
  • Uniform Distribution: Creates a broad, consistent air column to cover head-to-head stalls.
  • Efficiency: Optimized for low-RPM stability and long-term motor durability.
4-Blade Barn Fan
4-Blade High Velocity

4-Blade High-Velocity Fan

"Focused Punch for Targeted Cooling"

  • Highest Velocity: Concentrates airflow to achieve 2.5m/s+ wind speeds at cow level.
  • Longer Throw: Ideal for narrow alleys or forcing air into deep bedded areas.
  • Cost Effective: Lighter blade assembly offers excellent cooling performance per dollar.

Technical Excellence

Built for 24/7 commercial dairy performance.

Heavy-Duty Drive Systems

  • Motor Type: IE3 Premium Efficiency Motors or Brushless DC Options for high-torque performance.
  • Protection: IP55 / IP66 rated — completely sealed against high-pressure washdowns and fine barn dust.
  • Durability: Heavy-duty NSK/SKF bearings for smooth operation and long service life in continuous 24/7 use.
Industrial Fan Motor

Field-Proven Performance

Real cooling results from active NexAgri installations.

Fan Project Case
Large Scale Dairy, Vietnam

Maintaining Yield in 35°C Heat

  • • 80 4-Blade Industrial Fans
  • • Targeted wind speed: 2.5m/s
  • • Milk yield stabilized within 48 hours
"The heat usually stops our cows from eating. NexAgri's fans kept the airflow consistent, and our DMI didn't drop even during the hottest week."

Complete Your Environment System

Manure Scrapers

Manure Scrapers

Automated cleaning systems to reduce barn ammonia and moisture.

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Manure Separators

Manure Separators

Turn slurry into value-added bedding and fertilizer.

View Details →

Common Questions about Barn Ventilation

Expert answers to the questions most dairy producers ask.

01 What is the ideal wind speed for dairy cows?

To break the heat boundary layer around a cow's skin, you need a wind speed of 2.0 to 3.0 m/s directly at the cow's height. Our fan layouts are designed specifically to hit this target across the feeding and stall zones.

02 Will NexAgri fans survive a corrosive barn environment?

Yes. We use aviation-grade aluminum and fiberglass for blades and hot-dip galvanized steel for frames. Our motors are IP55/66 rated to resist the ammonia and high moisture levels found in dairy barns.

03 Are these fans expensive to run daily?

By using IE3 Premium motors and VFD speed controllers, our fans consume significantly less power than older models. The electricity cost is typically offset by the 1-3 kg of milk per cow you save daily by preventing heat stress.

04 Should I choose 4-blade or 6-blade fans?

Choose 4-blade fans for high-velocity cooling where you need "wind-chill" over a specific area. Choose 6-blade fans for maximum air exchange volume (CFM) in wide-span barns where moving large masses of air is the priority.

05 Can I automate the fans based on temperature?

Yes. Our fans integrate with THI (Temperature-Humidity Index) sensors. They automatically adjust speed or turn on/off based on real-time barn conditions, ensuring cows are never over or under-cooled while saving electricity.

06 What is the expected maintenance for these fans?

NexAgri fans are designed for low maintenance. Direct-drive models have no belts to tighten. We recommend a simple annual cleaning of the blades and motor casing to prevent dust buildup and maintain optimal balance.

Free Ventilation Layout Service

Not sure how many fans you need? Send us your barn dimensions. Our engineers will provide a free airflow simulation and recommended placement for maximum ROI.

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