The FARR Coupling is applied when a rigid connection is required in between the minimal velocity shaft of the gearbox and also the head shaft of a conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized thoroughly, the FARR Coupling will carry the applica-tion torque, excess weight of gearbox, motor and swing plate. Inside the situation of a mixer, it will carry the weight from the shaft and impeller, thrust forces and resulting bending moments.
Components of a FARR Coupling include male and female piloted hubs created from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft contact. Keeper plates are integrated for security. The 2 hubs are assembled with Grade 8 bolts and Grade À Prevailing Torque nuts. Regular coupling sizes have a nominal torque range from eleven,300 to five,736,000 in-lbs. Greater sizes are available depending on the application.
Features
Heat Handled 4140 alloy steel
Male and Female pilots
Increased Torque Capacity
Grade 8 Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length by means of bore
Keeper Plate design
FARR Coupling Choice Guidebook
A. Obtain The next Info:
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 Layout Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capacity equal to or greater than the Layout Torque from the Performance Data table.
E.Verify that the Bore capacity with the coupling will meet the application shaft requirements.
F.The Male pilot hub to always be used about the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be utilized on the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling choice.