The FARR Coupling is applied whenever a rigid connection is required between the very low velocity shaft of a gearbox and the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized properly, the FARR Coupling will carry the applica-tion torque, excess weight of gearbox, motor and swing plate. While in the situation of the mixer, it can carry the weight on the shaft and impeller, thrust forces and resulting bending moments.
Elements 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 get in touch with. Keeper plates are incorporated for safety. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Typical coupling sizes have a nominal torque range from 11,300 to 5,736,000 in-lbs. Bigger sizes are available depending on the application.
Options
Heat Treated 4140 alloy steel
Male and Female pilots
Enhanced Torque Capability
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length via bore
Keeper Plate style
FARR Coupling Choice Guide
A. Obtain The next 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 Design 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 utilized within the Reducer (Gearbox or Driver) shaft plus the Female pilot hub to always be used within the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.