The FARR Coupling is utilised when a rigid connection is required involving the minimal pace shaft of a gearbox along with the head shaft of the 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. During the case of the mixer, it’ll carry the bodyweight on 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 incorporated for safety. The 2 hubs are assembled with Grade eight 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 can be found determined by the application.
Functions
Heat Handled 4140 alloy steel
Male and Female pilots
Improved Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length via bore
Keeper Plate layout
FARR Coupling Variety Guidebook
A. Obtain The next Information:
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 Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capability equal to or greater than the Style and design 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 applied about the Reducer (Gearbox or Driver) shaft as well as Female pilot hub to always be used to the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.