FARR Coupling

The FARR Coupling is applied when a rigid connection is needed involving the reduced velocity shaft of a gearbox as well as head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized correctly, the FARR Coupling will carry the applica-tion torque, bodyweight of gearbox, motor and swing plate. In the situation of a mixer, it’ll carry the bodyweight of your shaft and impeller, thrust forces and resulting bending moments.
Components of the FARR Coupling consist of male and female piloted hubs produced from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft get hold of. Keeper plates are incorporated for safety. The two hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Normal coupling sizes possess a nominal torque vary from eleven,300 to 5,736,000 in-lbs. Bigger sizes are available based on the application.
Functions
Heat Taken care of 4140 alloy steel
Male and Female pilots
Greater 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 following Info:
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 Style and design Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capability equal to or greater than the Design and style Torque from the Performance Data table.
E.Verify that the Bore capacity from the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be utilised around the Reducer (Gearbox or Driver) shaft and also the Female pilot hub to always be utilised within the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.