FARR Coupling

The FARR Coupling is applied whenever a rigid connection is required concerning the lower velocity shaft of a gearbox and the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized effectively, the FARR Coupling will carry the applica-tion torque, fat of gearbox, motor and swing plate. While in the case of a mixer, it will eventually carry the excess weight from the shaft and impeller, thrust forces and resulting bending moments.
Parts 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 contact. Keeper plates are incorporated for security. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Typical coupling sizes have a nominal torque vary from 11,300 to five,736,000 in-lbs. More substantial sizes are available depending on the application.
Heat Taken care of 4140 alloy steel
Male and Female pilots
Elevated Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length through bore
Keeper Plate design and style
FARR Coupling Variety Manual
A. Obtain The next Information and facts:
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 Layout Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capability equal to or greater than the Style and design Torque from the Performance Data table.
E.Verify that the Bore capacity of your coupling will meet the application shaft requirements.
F.The Male pilot hub to always be employed to the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be utilised over the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.