Jaw Variety Coupling Choice System
The selection procedure for determining the proper jaw coupling dimension and elastomer involves applying the charts proven to the following pages. You will discover three components to be selected, two hubs and a single elastomer. Once the shaft dimension in the 
driver and driven of the application are of the identical diameter, the hubs selected will be exactly the same. When shaft diameters differ, hubs picked will differ accordingly.
Facts important prior to a coupling could be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental problems (i.e. extreme temperature, corrosive problems, room limitations)
Measures In Picking out A Jaw Coupling
Step 1: Decide the Nominal Torque of your application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Stage two: Making use of the Application Support Factors Chart 1 choose the services issue which best corresponds to your application.
Stage three: Calculate the Style Torque of the application by multiplying the Nominal Torque calculated in Phase one by the Application Service Aspect determined in Step 2.
Design Torque = Nominal Torque x Application Service Element
Step 4: Making use of the Spider Overall performance Data Chart 2， select the elastomer materials which best corresponds for your application.
Phase 5: Using the Jaw Nominal Rated Torque Chart three , locate the appropriate elastomer material column to the elastomer selected in Step 4.
Scan down this column to the 1st entry the place the Torque Worth while in the ideal column is higher than or equal to your Style Torque calculated in Stage 3.
As soon as this value is located, refer for the corresponding coupling dimension while in the initially column of your Jaw Nominal Rated Torque Chart three .
Refer to the optimum RPM value for this elastomer torque capability to be sure the application prerequisites are met. In the event the requirement is just not content at this time, a different type of coupling might be required to the application. Please seek advice from Lovejoy engineering for help.
Stage six: Evaluate the application driver/driven shaft sizes to the optimum bore dimension obtainable on the coupling chosen. If coupling bore dimension is just not huge ample for your shaft diameter, select the subsequent biggest coupling that can accommodate the driver/driven shaft diameters.
Phase seven: Making use of the UPC amount assortment table , uncover the acceptable Bore and Keyway sizes necessary and locate the amount.
