Jaw Variety Coupling Assortment Method
The choice course of action for figuring out the right jaw coupling size and elastomer necessitates making use of the charts shown over the following pages. You can find three parts for being chosen, two hubs and a single elastomer. Once the shaft dimension on the driver and driven from the application are from the similar diameter, the hubs selected will probably be precisely the same. When shaft diameters differ, hubs picked will differ accordingly.
Data important just before a coupling might be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven products and corresponding keyways
Application description
Environmental ailments (i.e. extreme temperature, corrosive disorders, space limitations)
Steps In 
Selecting A Jaw Coupling
Step one: Establish the Nominal Torque of your application by using the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Applying the Application Service Things Chart one choose the services aspect which most effective corresponds for your application.
Phase three: Determine the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Stage 1 through the Application Services Issue established in Phase two.
Design Torque = Nominal Torque x Application Support Aspect
Step four: Working with the Spider Performance Information Chart 2， decide on the elastomer material which very best corresponds for your application.
Phase five: Making use of the Jaw Nominal Rated Torque Chart three , locate the proper elastomer materials column for your elastomer picked in Stage four.
Scan down this column to the to start with entry wherever the Torque Worth in the appropriate column is higher than or equal to your Style Torque calculated in Stage 3.
After this worth is found, refer towards the corresponding coupling size while in the initially column with the Jaw Nominal Rated Torque Chart 3 .
Refer for the greatest RPM value for this elastomer torque capability to be sure the application needs are met. Should the requirement is not satisfied at this point, a further style of coupling may very well be essential for that application. Please check with Lovejoy engineering for assistance.
Step 6: Compare the application driver/driven shaft sizes for the greatest bore dimension obtainable over the coupling selected. If coupling bore size is not really large sufficient to the shaft diameter, decide on the next greatest coupling that could accommodate the driver/driven shaft diameters.
Step seven: Employing the UPC number assortment table , find the ideal Bore and Keyway sizes demanded and locate the variety.
