Yara Power Tool with 520CFM Wind Speed 0.3m³/s Volume 21V 450W Stepless Speed Control Brushed/Brushless Motor Factory Wholesale

We've been getting a lot of interest form lab guys who need consistent airflow for drying setups or fume extraction, and what it does is push a solid 520 CFM at 0.3 m³/s volume—enough to clear a small chamber pretty fast, and the 21V 450W motor handles sustained runs without bogging down.

The stepless speed control is actually the key here because you can dial it from a whisper to full blast, and most buyers go with brushless option for longer life in daily use, though the brushed motor is cheaper if you're prototyping and don't mind swapping brushes every six months or so.

It's listed for experiment use, so don't expect it to survive a drop onto concrete—the plastic housing is fine for bench work but won't take abuse like a metal-cased unit, and the axial flow design means it's better at pushing air in a straight line than pulling from tight corners.

We usually have stock on the blue ones with brushed motors, but the brushless version takes about 20 days or so because they're made to order, and MOQ is typically 10 units for the factory wholsale price—confirm lead time if you need RoHS or CE certs on the batch.

One thing you wouldn't think to ask is that the 46*23*23cm box doesn't include a battery or charger, so you'll need a compatiible 21V pack or a separate power supply for bench use, and the no-load speed of 28,000 RPM drops off pretty quickly under load (roughly 15-20% depending on the fan attachment).