The FARR Coupling is made use of when a rigid connection is required in between the minimal pace shaft of a gearbox and 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. During the case of the mixer, it will eventually carry the excess weight in 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 speak to. Keeper plates are incorporated for security. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Standard coupling sizes possess a nominal torque range from eleven,300 to five,736,000 in-lbs. More substantial sizes can be found depending on the application.
Capabilities
Heat Treated 4140 alloy steel
Male and Female pilots
Greater Torque Capability
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length through bore
Keeper Plate style and design
FARR Coupling Variety Guidebook
A. Obtain The following Information and facts:
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 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 Style and design Torque from the Performance Data table.
E.Verify that the Bore capacity on the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be applied within the Reducer (Gearbox or Driver) shaft plus the Female pilot hub to always be employed about the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.