Jaw Style Coupling Assortment Approach
The assortment course of action for figuring out the appropriate jaw coupling size and elastomer involves working with the charts proven around the following pages. You will discover three elements for being chosen, two hubs and a single elastomer. When the shaft dimension of the driver and driven with the application are with the very same diameter, the hubs picked are going to be exactly the same. When shaft diameters vary, hubs selected will differ accordingly.
Info required just before a coupling is usually selected:
HP (or KW) and RPM or Torque 
of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental situations (i.e. severe temperature, corrosive problems, space limitations)
Measures In Deciding on A Jaw Coupling
Step one: Decide the Nominal Torque of your application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Using the Application Support Variables Chart one choose the services issue which most effective corresponds for your application.
Step three: Calculate the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Step one through the Application Service Component established in Step 2.
Style and design Torque = Nominal Torque x Application Service Component
Stage 4: Employing the Spider Efficiency Data Chart 2， pick the elastomer material which finest corresponds for your application.
Step five: Using the Jaw Nominal Rated Torque Chart three , locate the suitable elastomer materials column for the elastomer chosen in Stage 4.
Scan down this column for the to start with entry where the Torque Worth inside the proper column is better than or equal to your Design and style Torque calculated in Stage 3.
When this worth is found, refer for the corresponding coupling size within the very first column from the Jaw Nominal Rated Torque Chart 3 .
Refer to your greatest RPM value for this elastomer torque capability to be sure the application prerequisites are met. When the requirement just isn’t satisfied at this time, a further variety of coupling could possibly be needed for the application. Please check with Lovejoy engineering for assistance.
Step six: Examine the application driver/driven shaft sizes to the optimum bore dimension out there within the coupling chosen. If coupling bore dimension just isn’t substantial sufficient for that shaft diameter, select the following largest coupling that can accommodate the driver/driven shaft diameters.
Step seven: Utilizing the UPC amount choice table , uncover the acceptable Bore and Keyway sizes essential and find the number.