The FARR Coupling is made use of when a rigid connection is required involving the minimal pace shaft of the gearbox as well as the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized adequately, the FARR Coupling will carry the applica-tion torque, bodyweight of gearbox, motor and swing plate. Inside 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 contact. Keeper plates are integrated for security. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Common coupling sizes possess a nominal torque vary from eleven,300 to five,736,000 in-lbs. More substantial sizes are available based upon the application.
Heat Handled 4140 alloy steel
Male and Female pilots
Enhanced Torque Capability
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length through bore
Keeper Plate design and style
FARR Coupling Choice Guide
A. Obtain The following Facts:
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 Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capacity equal to or greater than the Design Torque from the Performance Data table.
E.Verify that the Bore capability on the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be applied about the Reducer (Gearbox or Driver) shaft plus the Female pilot hub to always be employed about the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling variety.