Chicago Blower Sales Offices


MOTOR POSITIONSPrint


Belt Driven Centrifugal Fans

Motor Position 1

Positions W & Z are the most compact if motor will fit close to fan. With the current trend to fans on unitary bases (Arrgt. 9H), this is more common than ever. Positions X & Y will typically take more space.

Motor Position 3Motor Position 2

Note: RIGHT and LEFT are viewed from the drive side.

Arrangement 9 Motor Base Positions

Arrangement 9R

A/9R - Arrangement 9 with motor on right side of the bearing pedestal.

Arrangement 9L

A/9L - Arrangement 9 with motor on left side of the bearing pedestal.

Arrangement 9T/9SL/9SR

A/9T: - Arrangement 9 with motor on top of the fan housing.
A/9SL: - Arrangement 9 with motor on left side of fan housing.
A/9SR: - Arrangement 9 with motor on right side of fan housing.

Axial and Inline Centrifugal

Arrangement 1L/1R

A/1L - Arrangement 1 with motor on left.
A/1R - Arrangement 1 with motor on right.

Clock Positions

Using analog clock hour:minutes is common to specify Arrangement 9 motor positions on axial fans including inline Centrifugal fans. Usually motor positions on these fans types is only important for the location of nameplates and mounting feet or brackets.

45°   =  1:30         225° =  7:30
90°   =  3:00         270° =  9:00
135° =  4:30         315° =  10:30
180° =  6:00         360° =  12:00

Note: Motor position viewed from drive end.