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February 19, 2021

Jaw Sort Coupling Assortment Course of action
The assortment process for determining the appropriate jaw coupling size and elastomer necessitates employing the charts shown around the following pages. There are actually three components to be selected, two hubs and 1 elastomer. When the shaft size of your driver and driven on the application are of the identical diameter, the hubs picked will be precisely the same. When shaft diameters differ, hubs picked will vary accordingly.
Details necessary before a coupling is usually chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental ailments (i.e. extreme temperature, corrosive problems, room limitations)
Methods In Picking out A Jaw Coupling
Phase 1: Establish the Nominal Torque of one’s application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Working with the Application Service Variables Chart one decide on the services aspect which greatest corresponds to your application.
Stage 3: Calculate the Design Torque of your application by multiplying the Nominal Torque calculated in Phase 1 through the Application Service Aspect determined in Step two.
Design Torque = Nominal Torque x Application Support Element
Step 4: Working with the Spider Overall performance Data Chart 2, pick the elastomer materials which very best corresponds to your application.
Step five: Making use of the Jaw Nominal Rated Torque Chart three , find the proper elastomer material column for your elastomer selected in Step four.
Scan down this column towards the very first entry exactly where the Torque Worth while in the appropriate column is higher than or equal to your Layout Torque calculated in Phase three.
As soon as this worth is found, refer on the corresponding coupling dimension inside the initial column with the Jaw Nominal Rated Torque Chart three .
Refer for the greatest RPM worth for this elastomer torque capability to ensure the application demands are met. If your necessity will not be content at this point, yet another sort of coupling may be needed for your application. Please check with Lovejoy engineering for support.
Phase six: Compare the application driver/driven shaft sizes towards the maximum bore dimension offered about the coupling selected. If coupling bore dimension is just not significant ample to the shaft diameter, decide on the next largest coupling that could accommodate the driver/driven shaft diameters.
Phase 7: Working with the UPC number variety table , discover the proper Bore and Keyway sizes required and find the amount.