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FARR Coupling

The FARR Coupling is utilised when a rigid connection is needed between the lower pace shaft of the gearbox plus the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized appropriately, the FARR Coupling will carry the applica-tion torque, weight of gearbox, motor and swing plate. From the case of the mixer, it will eventually carry the bodyweight of 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 eight bolts and Grade À Prevailing Torque nuts. Regular coupling sizes possess a nominal torque vary from 11,300 to five,736,000 in-lbs. Greater sizes can be found depending on the application.
Options
Heat Taken care of 4140 alloy steel
Male and Female pilots
Enhanced Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by means of bore
Keeper Plate style and design
FARR Coupling Choice Manual
A. Obtain The following 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 Style 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 utilised around the Reducer (Gearbox or Driver) shaft along with the Female pilot hub to always be made use of around the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling variety.

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