The FARR Coupling is made use of whenever a rigid connection is needed between the low velocity shaft of the gearbox as well as the head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized effectively, the FARR Coupling will carry the applica-tion torque, bodyweight of gearbox, motor and swing plate. Within the case of a mixer, it will eventually carry the excess weight of the shaft and impeller, thrust forces and resulting bending moments.
Elements of a FARR Coupling include 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 integrated for security. The 2 hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Normal coupling sizes possess a nominal torque vary from 11,300 to five,736,000 in-lbs. More substantial sizes can be found dependant upon the application.
Attributes
Heat Treated 4140 alloy steel
Male and Female pilots
Improved Torque Capability
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by way of bore
Keeper Plate design
FARR Coupling Choice Guide
A. Obtain The following Facts:
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 Design and style Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capacity equal to or greater than the Layout Torque from the Performance Data table.
E.Verify that the Bore capability of the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be utilised on the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be used around the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling choice.