The FARR Coupling is made use of whenever a rigid connection is needed involving the very low 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 adequately, the FARR Coupling will carry the applica-tion torque, excess weight of gearbox, motor and swing plate. From the situation of the mixer, it can carry the weight with the shaft and impeller, thrust forces and resulting bending moments.
Components of the FARR Coupling include male and female piloted hubs created from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft contact. Keeper plates are incorporated for security. The 2 hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Conventional coupling sizes possess a nominal torque vary from 11,300 to five,736,000 in-lbs. Bigger sizes can be found determined by the application.
Functions
Heat Taken care of 4140 alloy steel
Male and Female pilots
Improved Torque Capability
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length as a result of bore
Keeper Plate style and design
FARR Coupling Variety Guide
A. Obtain The next Details:
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 capacity equal to or greater than the Style 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 made use of within the Reducer (Gearbox or Driver) shaft as well as the Female pilot hub to always be utilised to the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling variety.