FARR Coupling

The FARR Coupling is utilised whenever a rigid connection is needed concerning the low pace shaft of the gearbox plus 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, excess weight of gearbox, motor and swing plate. From the case of a mixer, it can carry the bodyweight on the shaft and impeller, thrust forces and resulting bending moments.
Components of a FARR Coupling consist of 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 two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Conventional coupling sizes possess a nominal torque range from 11,300 to 5,736,000 in-lbs. Larger sizes can be found based upon the application.
Capabilities
Heat Handled 4140 alloy steel
Male and Female pilots
Increased Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length through bore
Keeper Plate style
FARR Coupling Choice Guidebook
A. Obtain The following Details:
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 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 Style and design 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 made use of around the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be used about the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.

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