HSPA: Housings of the HSPA series are made from cast steel and both the housing, cover and labyrinth rings are in one piece. The housings are guided by means of guide rails in the conveyer framework. The take-up units are mainly supplied with fixed bearings. Axial tension of the shaft or the support structure is equalized by the clearance between the rails and housing guides.
SBL: These housings are mainly used for double acting fans. They are suitable for use with self-aligning ball or spherical roller bearings with adapter sleeves. The housings allow easy assembly and quick radial fine adjustment of the fan impeller.
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