The FARR Coupling is employed whenever a rigid connection is needed concerning the lower velocity shaft of the gearbox as well as head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized effectively, the FARR Coupling will carry the applica-tion torque, bodyweight of gearbox, motor and swing plate. During the situation of a mixer, it is going to carry the excess weight of your shaft and impeller, thrust forces and resulting bending moments.
Components 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 in touch with. Keeper plates are included for security. The 2 hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Common coupling sizes possess a nominal torque range from eleven,300 to five,736,000 in-lbs. More substantial sizes can be found according to the application.
Capabilities
Heat Handled 4140 alloy steel
Male and Female pilots
Enhanced Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by way of bore
Keeper Plate design
FARR Coupling Selection Guidebook
A. Obtain The next Information and facts:
Application
Horsepower & RPM
Gearbox (Reducer) Ratio
Output Velocity
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 Design and style Torque by applying 2.0 Service Factor to application 
torque.
D.Select coupling with a torque capability equal to or greater than the Design Torque from the Performance Data table.
E.Verify that the Bore capability with the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be employed within the Reducer (Gearbox or Driver) shaft as well as Female pilot hub to always be used within the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.
