Jaw Variety Coupling Variety System
The selection approach for identifying the right jaw coupling size and elastomer necessitates utilizing the charts shown to the following pages. You’ll find 3 elements for being selected, two hubs and a single elastomer. Once the shaft dimension of the driver and driven of your application are in the similar diameter, the hubs selected will probably be the same. When shaft diameters differ, hubs chosen will vary accordingly.
Details necessary prior to a coupling is often chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental circumstances (i.e. excessive temperature, corrosive circumstances, area limitations)
Methods In Choosing A Jaw Coupling
Phase 1: Determine the Nominal Torque of your application by using the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase two: Making use of the Application Support Components Chart 1 select the service component which greatest corresponds for your application.
Stage 3: Determine the Design Torque of one’s application by multiplying the Nominal Torque calculated in Phase 1 by the Application Service Component determined in Stage two.
Design Torque = Nominal Torque x Application Services Element
Step four: Using the Spider Efficiency Information Chart 2, choose the elastomer materials which best corresponds to your application.
Stage 5: Making use of the Jaw Nominal Rated Torque Chart 3 , locate the proper elastomer material column to the elastomer picked in Step 4.
Scan down this column for the 1st entry where the Torque Worth while in the proper column is greater than or equal towards the Layout Torque calculated in Phase three.
As soon as this value is located, refer to the corresponding coupling size during the first column from the Jaw Nominal Rated Torque Chart three .
Refer to the maximum RPM value for this elastomer torque capability to ensure that the application requirements are met. In case the requirement will not be pleased at this point, another sort of coupling might be required for your application. Please seek advice from Lovejoy engineering for assistance.
Step six: Review the application driver/driven shaft sizes for the highest bore dimension obtainable to the coupling chosen. If coupling bore dimension isn’t huge enough for the shaft diameter, select the following biggest coupling that could accommodate the driver/driven shaft diameters.
Stage seven: Working with the UPC amount assortment table , discover the suitable Bore and Keyway sizes expected and find the variety.