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January 28, 2021

The FARR Coupling is employed when a rigid connection is needed involving the lower velocity shaft of the gearbox along with 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, weight of gearbox, motor and swing plate. From the situation of the mixer, it can carry the fat with the shaft and impeller, thrust forces and resulting bending moments.
Components of the 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 hold of. Keeper plates are incorporated for safety. The 2 hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Conventional coupling sizes have a nominal torque vary from eleven,300 to five,736,000 in-lbs. Greater sizes are available based on the application.
Characteristics
Heat Treated 4140 alloy steel
Male and Female pilots
Improved Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length as a result of bore
Keeper Plate design
FARR Coupling Assortment Guidebook
A. Obtain The next Information:
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 capacity equal to or greater than the Style Torque from the Performance Data table.
E.Verify that the Bore capacity in 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 Female pilot hub to always be employed within the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling variety.