FARR Coupling

The FARR Coupling is used whenever a rigid connection is needed involving the low pace shaft of the gearbox plus the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized correctly, the FARR Coupling will carry the applica-tion torque, excess weight of gearbox, motor and swing plate. Inside the case of a mixer, it’ll carry the weight from the shaft and impeller, thrust forces and resulting bending moments.
Parts of a FARR Coupling consist of male and female piloted hubs made from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft get in touch with. Keeper plates are integrated for safety. The 2 hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Conventional coupling sizes possess a nominal torque range from 11,300 to five,736,000 in-lbs. Larger sizes are available dependant upon the application.
Capabilities
Heat Treated 4140 alloy steel
Male and Female pilots
Improved Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by means of bore
Keeper Plate style and design
FARR Coupling Assortment Manual
A. Obtain The following Details:
Application
Horsepower & RPM
Gearbox (Reducer) Ratio
Output Speed
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 capability equal to or greater than the Style Torque from the Performance Data table.
E.Verify that the Bore capacity from the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be utilised about the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be employed over the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.