The FARR Coupling is used whenever a rigid connection is needed between the very low velocity shaft of a gearbox and also 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, bodyweight of gearbox, motor and swing plate. Inside the situation of a mixer, it is going to carry the fat on 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 get hold of. 
Keeper plates are incorporated for security. The two hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Normal coupling sizes possess a nominal torque range from 11,300 to 5,736,000 in-lbs. Greater sizes can be found based upon the application.
Functions
Heat Handled 4140 alloy steel
Male and Female pilots
Enhanced Torque Capability
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length via bore
Keeper Plate design and style
FARR Coupling Assortment Guide
A. Obtain The next Data:
Application
Horsepower & RPM
Gearbox (Reducer) Ratio
Output Pace
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 and design Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capacity equal to or greater than the Design Torque from the Performance Data table.
E.Verify that the Bore capacity from the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be made use of to the Reducer (Gearbox or Driver) shaft as well as 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.
