Page 2-24
Dec/05
DESCRIPTION AND OPERATION
61-00-75
Propeller Owner's Manual
175
2. Model Designation
The following pages illustrate sample model designations for
Hartzell steel hub reciprocating propeller hub assemblies and
blades.
A. Steel Hub Propeller Model Identification
The propeller model number is impression stamped on the
propeller hub.
MINOR MODIFICATIONS NOT AFFECTING
BASIC PROPELLER OPERATION
HC - 8 2 X F - 2B1
NO. OF BLADES
2 or 3
X
- DOUBLE SHOULDER BLADE RETENTION SYSTEM
V
- DOUBLE SHOULDER BLADE RETENTION SYSTEM,
NEEDLE BEARINGS
BOLT
DOWELS NO. OF BOLTS
CIRCLE No. DIA.
OR STUDS
K FLANGE
4.75 inches N/A N/A
6 (0.50 inch)
(120.7 mm)
(12.7 mm)
F FLANGE
4.00 inches 2 (0.50 inch) 6 (0.50 inch)
(101.6 mm) (12.7 mm) (12.7 mm)
L FLANGE
4.75 inches
N/A N/A
6 (0.44 inch)
(120.7 mm)
(11.2 mm)
20 SPLINE
, SAE 20
SHAFT
MOUNTING
8
- LIGHT STEEL HUB, SOLID BEARING RETENTION,
SUPERSEDED BY "A" STEEL HUB
BASIC HUB DESIGN
HC
- HARTZELL CONTROLLABLE
BASIC SHANK
SPECIFIC
DESIGN
FEATURES
1
- NONFEATHERING, COUNTERWEIGHTS, OIL TO
DECREASE PITCH, NO SPRING
2
- FEATHERING, COUNTERWEIGHTS, OIL TO
DECREASE PITCH, FEATHERING SPRING
6 -
NONFEATHERING, NO COUNTERWEIGHTS,
NO SPRING, OIL TO INCREASE PITCH
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331
