FARR Coupling

The FARR Coupling is employed when a rigid connection is needed between the very low pace shaft of the gearbox and also 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, fat of gearbox, motor and swing plate. From 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 produced from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft contact. Keeper plates are included for safety. The two hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Standard coupling sizes possess a nominal torque range from eleven,300 to five,736,000 in-lbs. Bigger sizes are available according to the application.
Attributes
Heat Treated 4140 alloy steel
Male and Female pilots
Elevated Torque Capability
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length via bore
Keeper Plate design
FARR Coupling Selection Manual
A. Obtain The next Information and facts:
Application
Horsepower & RPM
Gearbox (Reducer) Ratio
Output Pace
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 and design 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 in the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be utilized around the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be employed within the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.