The FARR Coupling is made use of whenever a rigid connection is needed amongst the lower velocity shaft of a gearbox and the head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized properly, the FARR Coupling will carry the applica-tion torque, bodyweight of gearbox, motor and swing plate. From the situation of a mixer, it will carry the weight in 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 get hold of. Keeper plates are included for security. The 2 hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Common coupling sizes possess a nominal torque range from eleven,300 to 5,736,000 in-lbs. More substantial sizes can be found according to the application.
Options
Heat Treated 4140 alloy steel
Male and Female pilots
Increased Torque Capacity
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by bore
Keeper Plate style
FARR Coupling Variety Manual
A. Obtain The following Facts:
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 Design and 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 used about the Reducer (Gearbox or Driver) shaft along with the Female pilot hub to always be utilized about the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling variety.