The FARR Coupling is made use of when a rigid connection is required among the minimal pace shaft of a gearbox as well as head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized properly, the FARR Coupling will carry the applica-tion torque, bodyweight of gearbox, motor and swing plate. While in the case of the mixer, it is going to carry the excess weight with the shaft and impeller, thrust forces and resulting bending moments.
Parts of the FARR Coupling include male and female piloted hubs made from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft contact. Keeper plates are integrated for security. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Standard coupling sizes have a nominal torque range from 11,300 to five,736,000 in-lbs. Greater sizes can be found according to the application.
Capabilities
Heat Taken care of 4140 alloy steel
Male and Female pilots
Increased Torque Capability
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length through bore
Keeper Plate design
FARR Coupling Choice Manual
A. Obtain The next Information:
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 from the coupling will meet the application shaft requirements.
F.The Male pilot 
hub to always be utilised over the Reducer (Gearbox or Driver) shaft as well as the Female pilot hub to always be utilized on the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling variety.
