Three-quarter view of a replacement FFU backward-curved centrifugal fan impeller

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FFU Fan Impeller

A balanced backward-curved centrifugal wheel that replaces a damaged or contaminated FFU impeller while retaining the existing motor and housing.

Backward-Curved Blades
Low-Profile FFU Geometry
Balanced Rotating Assembly
Matched Hub Interface

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Pengenalan Produk

The FFU fan impeller converts motor rotation into the pressure and airflow required to move room air through the final filter. Its shallow centrifugal geometry suits the limited plenum depth of a ceiling-mounted fan filter unit. Backward-curved blades, a formed inlet rim and a rigid backplate guide air through the wheel while limiting recirculation. Replacement selection must match the original outside diameter, wheel depth, rotation direction, hub bore and motor speed so the assembled fan operates within its intended airflow range.

Ciri-ciri Utama

Backward-curved blades provide stable non-overloading centrifugal fan characteristics.

A shallow wheel profile fits compact ceiling FFU housings without obstructing the inlet path.

The formed rim and rigid backplate retain blade spacing during high-speed rotation.

Machined hub options match common direct-drive motor shafts and fastening methods.

Kebimbangan Produk Pelanggan

Impeller geometry and balance directly affect FFU airflow, sound and motor loading.

A wheel with the wrong diameter or depth changes the fan operating point.Replacement dimensions are matched to the original wheel envelope and FFU inlet clearance.

Incorrect blade direction produces weak airflow and excessive turbulence.Clockwise or counter-clockwise blade orientation is selected for the installed motor rotation.

Hub mismatch causes runout or prevents secure shaft attachment.Bore, keyway, set-screw and bolt pattern options are configured for the original drive shaft.

An unbalanced replacement transmits vibration to the filter and ceiling grid.The completed wheel is balanced as a rotating assembly after blade and hub fabrication.

Permohonan yang biasa

Cleanroom ceiling fan filter unitsLaminar-flow workstationsMini-environment circulation modulesFFU preventive-maintenance replacement

Parameter teknikal

Typical construction ranges for low-profile FFU centrifugal impellers are shown below.

Bahan Teras	Formed aluminum alloy or galvanized-steel backward-curved blade assembly
Ketebalan Panel	60-180 mm nominal wheel depth
Lebar berkesan	250-500 mm nominal outside diameter
Panjang maksimum	Up to 500 mm overall impeller diameter
Keluli Menghadapi Ketebalan	0.8-1.5 mm formed sheet-metal blades and backplate
Ketumpatan teras	2700 kg/m³ for aluminum or 7850 kg/m³ for steel components
Kekonduksian Terma	160-205 W/(m·K) for aluminum or 45-60 W/(m·K) for steel
Kemasan permukaan	Natural aluminum or corrosion-resistant zinc-coated silver finish
Jenis Bersatu	Formed blade tabs or welded blade roots with machined bolted or set-screw hub
Penyesuaian	Boleh didapati berdasarkan aplikasi yang dimaksudkan dan persekitaran operasi.

Pilihan yang boleh didapati

Aluminum or galvanized-steel constructionClockwise or counter-clockwise rotationCustom hub bore and fasteningMatched diameter and wheel depth

Planning a FFU Fan Impeller specification?

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