FARR Coupling

The FARR Coupling is made use of whenever a rigid connection is needed concerning the lower pace shaft of the gearbox and also 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, fat of gearbox, motor and swing plate. During the situation of the mixer, it’ll carry the fat in the shaft and impeller, thrust forces and resulting bending moments.
Components of a FARR Coupling include male and female piloted hubs made from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft contact. Keeper plates are incorporated for safety. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Conventional coupling sizes possess a nominal torque range from eleven,300 to 5,736,000 in-lbs. Greater sizes can be found dependant upon the application.
Options
Heat Handled 4140 alloy steel
Male and Female pilots
Enhanced Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length as a result of bore
Keeper Plate style and design
FARR Coupling Selection Guide
A. Obtain The next Information and facts:
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 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 Layout Torque from the Performance Data table.
E.Verify that the Bore capability of the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be employed about the Reducer (Gearbox or Driver) shaft plus the Female pilot hub to always be made use of to the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling choice.

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