The FARR Coupling is utilised whenever a rigid connection is needed between the lower 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 appropriately, the FARR Coupling will carry the applica-tion torque, fat of gearbox, motor and swing plate. During the situation of a mixer, it is going to carry the bodyweight of the shaft and impeller, thrust forces and resulting bending moments.
Components 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 make contact with. Keeper plates are included for security. The 2 hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Typical coupling sizes possess a nominal torque vary from eleven,300 to five,736,000 in-lbs. Larger sizes can be found dependant upon the application.
Options
Heat Taken care of 4140 alloy steel
Male and Female pilots
Enhanced Torque Capability
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by way of bore
Keeper Plate style
FARR Coupling Selection Guidebook
A. Obtain The next 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 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 capability with the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be utilised about the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be utilized within the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.