The FARR Coupling is applied when a rigid connection is needed among the minimal speed shaft of the gearbox plus the head shaft of the 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. Inside the situation of a mixer, it’s going to carry the excess weight on the shaft and impeller, thrust forces and resulting bending moments.
Elements of the FARR Coupling consist of male and female piloted hubs made from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft make contact with. Keeper plates are integrated for security. The two 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 5,736,000 in-lbs. More substantial sizes are available depending on the application.
Options
Heat Treated 4140 alloy steel
Male and Female pilots
Greater Torque Capability
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by means of bore
Keeper Plate layout
FARR Coupling Variety Guidebook
A. Obtain The following Information:
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 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 of your coupling will meet the application shaft requirements.
F.The Male pilot hub to always be made use of around the Reducer (Gearbox or Driver) shaft as well as Female pilot hub to always be made use of around the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling choice.