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

クリーンルーム機器のスペアパーツ

FFU ファンインペラ

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

見積もりリクエスト製品案内

商品紹介

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.

主要な特徴

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.

お客様の製品に関する懸念事項

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.

典型的な用途

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

技術的なパラメータ

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

コア材料	Formed aluminum alloy or galvanized-steel backward-curved blade assembly
パネルの厚さ	60-180 mm nominal wheel depth
有効幅	250-500 mm nominal outside diameter
最大長さ	Up to 500 mm overall impeller diameter
鋼鉄の厚さを直面する	0.8-1.5 mm formed sheet-metal blades and backplate
コア密度	2700 kg/m³ for aluminum or 7850 kg/m³ for steel components
熱伝導率	160-205 W/(m·K) for aluminum or 45-60 W/(m·K) for steel
表面仕上げ	Natural aluminum or corrosion-resistant zinc-coated silver finish
ジョイントタイプ	Formed blade tabs or welded blade roots with machined bolted or set-screw hub
カスタマイズ	意図したアプリケーションと動作環境に基づいて利用できます。

利用可能なオプション

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

Planning a FFU Fan Impeller specification?

寸法、設置条件、性能目標、必要な表面仕上げをお送りください。

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