The FARR Coupling is utilised when a rigid connection is needed involving the lower pace shaft of a gearbox along with the head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized thoroughly, the FARR Coupling will carry the applica-tion torque, fat of gearbox, motor and swing plate. While in the case of the mixer, it can carry the fat of the shaft and impeller, thrust forces and resulting bending moments.
Parts of the FARR Coupling include 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 included for safety. The 2 hubs are assembled with Grade 8 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 can be found depending on the application.
Options
Heat Handled 4140 alloy steel
Male and Female pilots
Greater Torque Capacity
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length via bore
Keeper Plate design and style
FARR Coupling Variety Guidebook
A. Obtain The following Info:
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 Layout Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capability equal to or greater than the Design Torque from the Performance Data table.
E.Verify that the Bore capacity with the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be utilized about the Reducer (Gearbox or Driver) shaft as well as the Female pilot hub to always be utilized over the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.