High-Displacement, Medium-Pressure Aerodynamic Ventilation Fan
The 4-68 Industrial Centrifugal Blower is an AMCA-certified air-movement system engineered for large-volume HVAC networks, plant ventilation, and cleanroom air circulation. Designed with a wider impeller wheel profile than the 4-72 series, it achieves greater volumetric displacement at lower rotational speeds and reduced electrical power consumption. Available across direct-drive (Type A), belt-drive (Type C), and coupling-drive (Type D) arrangements, it handles continuous airflow volumes from 1,131 to 96,000 m³/h across low-to-medium static pressure systems up to 4,100 Pa.
Core System Advantages
High Volumetric Displacement: Expanded aerodynamic wheel geometry maximizes cubic air movement while minimizing motor drag and operating friction.
AMCA & CE Performance Certification: Fully certified under AMCA, CE, and ISO 9001:2015 standards for aerodynamic compliance and energy efficiency.
Low-Resonance Dynamic Balancing: Precision G2.5 balanced backward-curved impellers ensure smooth, low-vibration operation with noise levels maintained under 85 dB(A).
Featured Model Variants
4-68-2.8A | Compact Local Air Line
Airflow: 1,131–2,262 m³/h | Pressure: 657–971 Pa | Motor Power: 0.55–2.0 kW | Drive: Direct Drive
Designed for small workshop ventilation, laboratory hood exhausts, and localized air supply.
4-68-14D | Mega-Flow Industrial Circulation
Airflow: 96,000 m³/h | Pressure: 4,100 Pa | Motor Power: 110.0 kW | Drive: Coupling Drive
High-capacity system built for large-scale mining shafts, metallurgical works, and power generation halls.
Why industry Choose the 4-68 Industrial Blower?
Maximized Air Volume: Designed with a wider impeller wheel profile than the 4-72 series, specifically engineered to move massive volumes of air (up to 96,000 m³/h) at lower pressures.
Energy Efficient: The aerodynamic backward-curved blades prevent motor overload and minimize drag, moving greater air volumes at lower rotational speeds to reduce your electricity draw.
Quiet and Smooth: Precision G2.5 dynamic balancing ensures that even at high capacities, the blower operates smoothly without structural resonance and loud acoustic spikes.
Certified Quality: Every model carries AMCA certification in addition to standard ISO 9001 and CE compliance, guaranteeing rigorous performance standards.
Flexible Configurations: Available in direct, belt, and coupling drives with impeller diameters from 280 mm to 1,400 mm, allowing precise matching to your HVAC or cleanroom requirements.
Technical Performance Matrix
| Component Feature | Standard HVAC Fans | SENOTAY Structural Advantage |
| Volumetric Capacity | Restricted airflow paths limit output volume | Widened aerodynamic wheel profile maximizes cubic air displacement |
| Power Consumption | High electricity draw under continuous load | Over-load-preventing backward blades minimize motor drag |
| Acoustic Footprint | Structural resonance causes loud factory noise | Precision G2.5 dynamic balancing ensures smooth, quiet operation |
Why Leading Plants Choose SENOTAY 4-68 Industrial Blower
Factory-Direct Pricing. Certified Quality. Dedicated Support.
Best Price Guarantee
Certified & Compliant
Fast, Reliable Delivery
Comprehensive After-Sales Support
Lifetime Technical Support: Direct engineering access for system static pressure calculations, ducting layout adjustments, motor power matching, and air-to-cloth ratio tuning.
Full System/Parts Availability: On-demand factory access to all vital replacement components, including spare impellers, heavy-duty belts, water-cooled bearing blocks, and vibration-isolation springs.
Remote Troubleshooting: Immediate technical assistance for field diagnostics, including vibration tracking, airflow capacity drops, or thermal expansion alignment issues.
Trusted by industrial environmental equipment and material handling plants worldwide. Ready for yours.
Types of 4-68 Industrial Blower Model
Model | Transmission | Impeller Diameter (mm) | Speed (RPM) | Airflow Range (m³/h) | Pressure Range (Pa) | Motor Power (kW) |
4-68-2.8A | Direct Drive | 280 | 2900 | 1131–2262 | 657–971 | 0.55–2.0 |
4-68-3.2A | Direct Drive | 320 | 2900 | 1025–2135 | 1267–1500 | 0.75–2.2 |
4-68-3.55A | Direct Drive | 355 | 2900 | 2708–5013 | 1108–1608 | 3.0 |
4-68-4A | Direct Drive | 400 | 2900 | 2375–4270 | 1225–1537 | 2.2–4.0 |
4-68-5A | Direct Drive | 500 | 2900 | 4685–8370 | 1905–2375 | 4.0–7.5 |
4-68-6C | Belt Drive | 630 | 1450 | 12550 | 3325 | 15.0 |
4-68-8C | Belt Drive | 800 | 1450 | 22500–26850 | 3400–3800 | 22.0–37.0 |
4-68-10D | Coupling Drive | 1000 | 960 | 49250 | 3875 | 55.0 |
4-68-12D | Coupling Drive | 1250 | 730 | 79150 | 3585 | 90.0 |
4-68-14D | Coupling Drive | 1400 | 730 | 96000 | 4100 | 110.0 |
4-68 Industrial Blower — Technical Specification Table
Physical Dimensions | Performance Ratings | Material & Construction | Operational Data | Certifications & Lifecycle |
Length: 920–1580 mm | Airflow Capacity: 1,800–62,000 m³/h | Q235 Carbon Steel | 160–240 Nm | 26,000–34,000 hrs |
Width: 680–1320 mm | Static Pressure: 450–2,150 Pa | Q345 High-Strength Steel | 8–12 × Ø14–Ø18 mm | 24–36 months |
Height: 840–1460 mm | Operating Pressure: 0.8–1.5 Bar | 45# Steel | 210–890 kg | ISO 9001:2015 / CE / AMCA |
Inlet Diameter: Φ220–Φ600 mm | Max Pressure: 1.7 Bar | Spherical Roller Bearing | 1.5–37 kW | > 10,000 cycles |
Outlet Flange: 180 × 260 mm | Operating Temp: -20 to 80°C | NBR (Nitrile Rubber) | 960–2900 rpm | > 85,000 cycles |
BCD: 330–480 mm | Max Temp: 100°C | 70–120 μm | ≤ 6.3 mm/s | 12–18 months |
Base Plate Thickness: 6–12 mm | Efficiency: ≥ 80% | GB/T 12467 Level 2 | 2 × Rated 1 Ton | Industrial Grade I
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Product Description & Material Properties
The 4-68 centrifugal fan series consists of multiple models with different impeller diameters, power ratings, and airflow capacities. Each unit is carefully designed for optimal aerodynamic performance and durability.
Material Options:
Standard: High-grade carbon steel (anti-wear and stable under high mechanical load)
Optional: Stainless steel or coated surfaces for enhanced corrosion and chemical resistance
Finish: Powder-coated, corrosion-resistant paint finish for long-term operation in industrial environments
Standard Mechanical Properties:
Property | Standard Value | Unit | Remarks |
Max Operating Temp | ≤ 80°C | — | Suitable for standard air systems |
Max Dust Content | ≤ 150 mg/m³ | — | Designed for clean/non-viscous air |
Bearing Type | Heavy-duty Ball Bearings | — | Long service life, low vibration |
Surface Protection | Electrostatic powder coating | — | Corrosion resistant |
Noise Level | <85 dB (A) | — | Under rated conditions |
Power Range | 0.55 kW – 90 kW | — | According to model |
4-68 Industrial Blower Working process
4-68 industrial blower operates on the centrifugal principle. Firstly from environment the Air enters axially into the impeller hub and where the rapidly rotating impeller blades accelerate the air radially outward. This velocity is then converted into static pressure within the scroll shaped housing which delivering uniform with high-pressure air output suitable for ventilation, exhaust and material conveying systems.
Key Mechanism Steps:
Inlet: here inside the Air enters through the center of the blower.
Impeller Action: The action happened because of kinetic energy is imparted by the impeller.
Energy Conversion: Here the Velocity is transformed into pressure via the volute casing.
Outlet: Highpressure air or gas exits through the discharge duct.
Features of 4-68 Industrial Blower
Wide range of airflow and speed configurations.
Precision-balanced impeller for vibration-free performance.
Energy-efficient motor options.
Low-maintenance and long service life.
Flexible drive selections (direct-coupled, belt-driven or coupling).
Compact design suitable for retrofitting existing systems.
Complies with AMCA and CE standards.
Core Components
Impeller / Fan Wheel: Aerodynamically designed and dynamically balanced to minimize noise and vibration.
Casing: Volute housing designed for optimal pressure recovery.
Drive System: Electric motor coupled directly or through belt/coupling.
Shaft & Bearings: High-precision components ensuring smooth operation.
Inlet & Outlet Ducts: Standard flanged design for easy installation.
Base Frame: Welded steel structure ensuring rigidity and stability
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▪ Y5-47 Industrial Blower | 4-72 Industrial Blower | 4-68 Industrial Blower | 9-19 Industrial Blower | 9-26 Industrial Blower
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FAQs
1. What is the maximum operating temperature for the 4-68 centrifugal fan?
Answers:The standard model handles clean air or gas up to 80°C; customized high-temperature models are available on request.
2. Can the 4-68 blower handle corrosive gases?
Answers:Yes it can, By selecting stainless steel or anti-corrosion coating, it can safely manage mildly corrosive media.
3. What certifications does the 4-68 industrial blower have?
Answers:It is AMCA certified, CE compliant, and manufactured under ISO 9001:2015 quality management.
4. How do I select the right model?
Answers:Selection depends on required airflow (CFM), static pressure, application type and installation space and contact Senotay for design consultation.
5. Does Senotay provide customized solutions?
Answers:Absolutely yes it is . We offer tailored designs and OEM production for specific industrial ventilation and dust control systems.
