Published product and engineering information
AGRICULTURAL & LIVESTOCK VENTILATION
RAFAVENT large-diameter belt-driven axial fans circulate and mix air inside cattle barns. They support air movement at animal level but do not replace the required fresh-air and exhaust ventilation system.
Six-blade axial impeller designed for high-volume free-air circulation across stalls, feed lanes and holding areas.
Pulley ratio separates motor speed from impeller speed, allowing the impeller to operate at the selected low rotational speed.
Full metal mesh enclosure with guarded access. Door interlock and a fully enclosed belt guard are required in the final installation.
| Model | Impeller Ø | Nominal frame W×H | Motor | Motor speed | Impeller speed | Drive ratio |
|---|---|---|---|---|---|---|
| RF-LCF-1000 | 1000 mm | 1300×1300 mm | 0.55 kW / 0.75 hp | 1500 rpm | 765 rpm | 1.96:1 |
| RF-LCF-1250 | 1250 mm | 1550×1550 mm | 1.1 kW / 1.5 hp | 1500 rpm | 610 rpm | 2.46:1 |
| RF-LCF-1400 | 1400 mm | 1700×1700 mm | 1.1 kW / 1.5 hp | 1500 rpm | 545 rpm | 2.75:1 |
| RF-LCF-1700 | 1700 mm | 2000×2000 mm | 1.5 kW / 2 hp | 1500 rpm | 450 rpm | 3.33:1 |
RF-LCF-1700 dimensions, motor rating and speeds are manufacturer-confirmed. Smaller models are preliminary engineering extensions derived by fan similarity and must be released by RAFAVENT engineering before order.
| Model | Estimated free-air flow | Estimated selection pressure | Acoustic data status | Tip speed |
|---|---|---|---|---|
| RF-LCF-1000 | 16,000–20,000 m³/h | 0–90 Pa | Test data required | 40.1 m/s |
| RF-LCF-1250 | 25,000–31,000 m³/h | 0–90 Pa | Test data required | 39.9 m/s |
| RF-LCF-1400 | 31,000–39,000 m³/h | 0–90 Pa | Test data required | 40.0 m/s |
| RF-LCF-1700 | 47,000–57,000 m³/h | 0–90 Pa | Test data required | 40.1 m/s |
Acoustic performance for this configuration is not verified for acoustic selection. Specify LwA or LpA, frequency bands, duty point, sound path and test method; LpA also requires measurement distance and environment. A fixed ±6 dB uncertainty without supporting analysis and test documentation is not a verified uncertainty.
Preliminary estimated values—not certified ratings. Airflow is scaled from the RF-LCF-1700 design envelope using constant-tip-speed fan similarity. Final airflow, pressure, absorbed power and sound require controlled testing of the production configuration.
| Fan type | Large-diameter axial circulation fan, free-air duty |
|---|---|
| Impeller | Six fabricated metal blades |
| Drive | Belt and pulley; fully guarded |
| Motor supply | Project-specific; 50 Hz standard |
| Enclosure | Welded steel frame with protective wire mesh and service door |
| Finish | Industrial protective coating; enhanced corrosion system available for humid/ammonia environments |
| Airflow direction | Confirmed on approved production drawing and rotation arrow |
| Installation | Floor/frame or engineered structural mounting; clearances verified for each barn |
| Selection inputs | Barn dimensions, animal layout, target air speed at animal level, ambient conditions, mounting height, obstructions, electrical supply and operating schedule. |
|---|---|
| Safety | Locked access, electrical isolation, fixed belt and pulley guard, adequate structural anchorage and safe distance from animals and personnel. |
| Maintenance | Inspect belt tension, pulley alignment, bearings, fasteners, blade condition and guards; clean deposits without disturbing blade balance. |
| Final release | Confirm mounting drawing, airflow direction, motor data, protection rating and production test requirements before order. |
This product circulates existing barn air. Required outside-air ventilation, contaminant removal and summer/winter ventilation rates must be designed separately. Published estimated values are for preliminary selection only; certified performance is issued only after applicable production testing.