The FARR Coupling is used when a rigid connection is required concerning the minimal pace shaft of a gearbox along with the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized thoroughly, the FARR Coupling will carry the applica-tion torque, weight of gearbox, motor and swing plate. While in the situation of the mixer, it’ll carry the fat from the shaft and 
impeller, thrust forces and resulting bending moments.
Components of the FARR Coupling consist of male and female piloted hubs created from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft make contact with. Keeper plates are integrated for safety. The 2 hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Common coupling sizes possess a nominal torque vary from 11,300 to five,736,000 in-lbs. Bigger sizes are available depending on the application.
Attributes
Heat Handled 4140 alloy steel
Male and Female pilots
Greater Torque Capacity
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length via bore
Keeper Plate layout
FARR Coupling Variety Guide
A. Obtain The following Facts:
Application
Horsepower & RPM
Gearbox (Reducer) Ratio
Output Speed
All Shaft Sizes
Overhang Load
Lever Arm
(Distance from end of Gearbox output Shaft to Center-Line of Gearbox or Center Line of Gravity)
B.Calculate Application Torque:
T (in-lb) = ¡ê¡§HP x 63025¡ê?/RPM
C.Calculate Style Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capacity equal to or greater than the Style Torque from the Performance Data table.
E.Verify that the Bore capability of the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be used on the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be utilised to the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.
