The FARR Coupling is used when a rigid connection is required between the lower velocity shaft of the gearbox plus the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized effectively, the FARR Coupling will carry the applica-tion torque, excess weight of gearbox, motor and swing plate. While in the case of a mixer, it’s going to carry the fat with the shaft and impeller, thrust forces and resulting bending moments.
Parts of the FARR Coupling consist of male and female piloted hubs produced from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft get in touch with. Keeper plates are included for security. The 2 hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Typical coupling sizes possess a nominal torque range from eleven,300 to five,736,000 in-lbs. More substantial sizes are available according to the application.
Options
Heat Treated 4140 alloy steel
Male and Female pilots
Elevated Torque Capability
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length as a result of bore
Keeper Plate style
FARR Coupling Variety 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 Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capability equal to or greater than the Style 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 on the Reducer (Gearbox or Driver) shaft as well as the Female pilot hub to always be applied over the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling selection.