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®
 FAN-PEDIA                                                                                             PROPELLERS
 Published by   AEROVENT.COM
 Aerovent                                                                                                         OVERVIEW
 ©2017

 ADJUSTABLE PITCH PROPELLERS                                              “W”  Propeller



                                                Propeller Overview
                                                •  Available in 7 blades only
                                                •  Aluminum spinner cap (hub cover) helps streamline
                                                    the air intake
                                                •  Blade angle settings range from 18 to 42 degrees in
                                                    4 degree increments
                                                •  319 Aluminum (Standard Material)
                                                •  Available in welded design (Special Coatings Available)
                                                Design 1
                                                •  Commonly used on Arr. 4 Direct Drive Fans
 NOTE #1 - Rotation is   DESIGN 1  DESIGN 3      •  Has a larger hub and shorter blades. The larger
 determined by viewing   SIZES 18” – 43”  SIZES 25” – 84”  hub diameter allows for drive motors throughout a
 the propeller from the air   Rotation: LH Only  Rotation: LH Only  wide range of horsepowers.
 discharge side.
                                                Design 3
 Note #2 - To reverse                           •  Commonly used on Arr. 9 Belt Driven Fans
 airflow, the propeller                          •  Has a smaller hub and longer blades. The smaller
 blades are rotated 180                              hub allows for weight reduction on the fan shaft &
 degrees (bushing is always   Intake                 compensates for air restriction by the belt tube.
 accessible for proper                          Airflow Direction & Rotation
 tightening onto shaft)                         •  Blades can be rotated 180 degrees if reversed
                                                    airflow is required (spinner cap/hub cover omitted)
                      Discharge


 STANDARD AIRFLOW
 (PM)  Discharge
 air passes
 through Prop
 then over Motor
 aka: Hub on Intake
 Intake                                              Standard Configuration                           Reverse Configuration
                                                                PM Airflow                                      MP Airflow                         48
   90   91   92   93   94   95   96   97   98   99   100