For higher pressure applications. Impellers are mounted between supporting bearings. Outboard bearings are a matched set, one for radial loads, the other for thrust loads. Inboard bearing absorbs a share of the radial load. The blower is coupled to a standard shaft motor or a belt drive can be optionally furnished.

美國SPENCER Four Bearing Outboard
高壓力應用。葉輪安裝在支承軸承。外置軸承是匹配的，一個用于徑向負荷，其他的推力負荷。內側軸承吸收份額的徑向負荷。風機連接到一個標準的電機軸或皮帶驅動可隨意布置。