Industrial Centrifugal Fan – (Cf – 11 Series) is a low-noise multi-wing centrifugal fan for ducted ventilation, exhaust and dust collection where stable pressure, reliable installation sizing and smooth operation all matter.
KCVENTS CF-11 Series is a low-noise, high-pressure multi-wing centrifugal fan engineered for systems where static pressure is just as critical as volumetric airflow. Unlike standard ventilation fans that struggle with resistance, the CF-11 is built to push air forcefully through complex duct networks, making it a highly reliable solution for ducted extraction, dust collection, source-fume removal, and industrial equipment cooling.
Designed for high-resistance ventilation systems, the CF-11 series balances pressure output, low-noise operation and installation-ready dimensional data.
The fan supports applications where long ducts, extraction points or filtration resistance require stronger static pressure.
The CF-11 structure helps keep operation smoother and quieter than a purely high-speed rough-duty airflow approach.
Published voltage data helps project teams align fan selection with the available site electrical supply.
Multiple model sizes support different airflow, pressure and installation requirements.
Dimensional tables and size diagrams help installers plan ducts, bolt points and equipment clearances more accurately.
Specified protection and insulation grades support reliable ventilation duty in practical project environments.
| Model | D1 | D2 | D3 | n – d1 | A1 | A2 | A3 | B2 | B3 | n – d1 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1.5 A | 153 | 178 | 194 | 8 – Φ6.5 | 97 | 122 | 147 | 95 | 119 | 144 |
| 2A | 174 | 202 | 222 | 8 – Φ8.5 | 163 | 199 | 215 | 132 | 165 | 180 |
| 2.5A – 2 | 174 | 202 | 222 | 8 – Φ8.5 | 163 | 199 | 215 | 132 | 165 | 180 |
| 2.5A – 4 | 213 | 238 | 260 | 8 – Φ8.5 | 163 | 199 | 215 | 132 | 165 | 180 |
| 3A | 264 | 292 | 315 | 8 – Φ8.5 | 215 | 253 | 277 | 132 | 212 | 235 |
| 3.5A | 332 | 367 | 395 | 8 – Φ8.5 | 255 | 300 | 329 | 155 | 290 | 319 |
| 4A | 332 | 366 | 395 | 8 – Φ8.5 | 270 | 300 | 329 | 155 | 290 | 319 |
| Model | Overall Dimensions | Basic Dimensions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| E | G | K | M | N | L | p1 | q1 | p2 | q2 | n-d1 | |
| 1.5 A | 12 – Φ9 | 76 | 307 | 106 | 321 | 216 | 340 | 110 | 242 | 152 | 4 – Φ13 |
| 2A | 12 – Φ9 | 101 | 406 | 128 | 406 | 257 | 410 | 465 | 310 | 190 | 4 – Φ13 |
| 2.5A – 2 | 12 – Φ9 | 101 | 479 | 169 | 468 | 300 | 460 | 469 | 330 | 208 | 4 – Φ13 |
| 2.5A – 4 | 12 – Φ9 | 101 | 479 | 169 | 465l | 296 | 410 | 254 | 312 | 196 | 4 – Φ13 |
| 3A | 12 – Φ9 | 1111 | 577 | 195 | 565 | 364 | 190 | 271 | 330 | 238 | 4 – Φ13 |
| 3.5A | 12 – Φ9 | 113 | 669 | 225 | 645 | 400 | 540 | 312 | 370 | 266 | 4 – Φ3 |
| 4A | 12 – Φ9 | 113 | 746 | 269 | 740 | 458 | 590 | 341 | 400 | 298 | 4 – Φ13 |
| Model And Power (KW) |
Voltage (v) |
Speed (r/min) |
Airflow (m³/h) |
Total Pressure (Pa) |
Size (mm) |
|---|---|---|---|---|---|
| CF-11-1.5A-4-0.18kW | 220-380 | 1450 | 500-600 | 260-210 | ≤52 |
| CF-11-1.5A-2-0.37kW | 220-380 | 2900 | 830-1080 | 790-748 | ≤55 |
| CF-11-2A-4-0.37kW | 220-380 | 1450 | 900-1100 | 350-300 | ≤55 |
| CF-11-2A-2-1.1kW | 220-380 | 2900 | 1900-2500 | 1200-959 | ≤65 |
| CF-11-2.5A-4-0.75kW | 220-380 | 1450 | 2000-2800 | 530-450 | ≤62 |
| CF-11-2.5A-2-2.2kW | 220-380 | 2900 | 4200-5600 | 1678-1118 | ≤72 |
| CF-11-3A-4-1.5kW | 220-380 | 1450 | 3500-4000 | 800-715 | ≤65 |
| CF-11-3.2A-4-2.2kW | 220-380 | 1450 | 4500-5800 | 1199-998 | ≤65 |
| CF-11-3.5A-4-2.2kW | 220-380 | 1450 | 5100-6200 | 1199-998 | ≤65 |
| CF-11-3.5A-4-3kW | 220-380 | 1450 | 5800-6650 | 1210-1098 | ≤69 |
| CF-11-4A-6-1.1KW | 380 | 960 | 2500-4200 | 600-520 | ≤68 |
| CF-11-4A-4-4KW | 380 | 1450 | 8920-11200 | 1305-1040 | ≤73 |
| CF-11-4.5A-6-3kW | 380 | 960 | 4500-6500 | 764-630 | ≤70 |
High-pressure centrifugal airflow for ducted extraction, fume removal and compact industrial ventilation systems.
Supports dust collection points where air resistance requires stronger pressure.
Useful for workshops and process areas that need directed exhaust airflow.
Fits compact ducted systems where layout resistance needs centrifugal pressure support.
Provides directed airflow for machinery rooms and enclosed equipment areas.
We eliminate procurement and installation risks through rigorous factory verification and straightforward B2B warranty support.
Every batch undergoes strict functional and dimensional routing tests, including impeller balance inspection, motor operation check, housing coating review, pressure and airflow verification, mounting dimension check and table parameter matching. We ensure that every single unit arrives at your project site fully functional and ready for flawless installation.
We stand firmly behind our manufacturing craftsmanship. In the rare event of any material defect or mechanical failure under standard project operations, KCVENTS provides a straightforward, hassle-free hardware replacement service to secure your timeline.
As a global manufacturer of HVAC and ventilation equipment, KCVENTS is dedicated to providing flexible customization services and robust long-term supply chain warranty terms for contractors, brands, and wholesalers.
We support full private labeling (OEM) and custom housing finishes. Our ODM engineering covers custom chassis modifications, specialized airflow curves, and regional electrical standards (e.g., 110V/60Hz, 24V variable frequency).
For large-scale HVAC and green building deployments, we offer structured MOQ tiers, staged shipping contracts, and agile multi-batch delivery aligned with your construction timeline. Technical submittals and parameter validation are included.
Motors enjoy an extended warranty of up to 3 to 5 years, backed by a comprehensive 1-year full system warranty. Bulk orders are eligible for a dedicated percentage of maintenance spares along with 1-on-1 remote engineering support.
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