Jaw Type Coupling Choice Approach
The selection approach for determining the correct jaw coupling dimension and elastomer calls for employing the charts shown to the following pages. You will discover three elements to be selected, two hubs and one elastomer. When the shaft size with the driver and driven of the application are of the exact same diameter, the hubs chosen will likely be the exact same. When shaft diameters differ, hubs chosen will differ accordingly.
Details essential before a coupling is often picked:
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. excessive temperature, corrosive problems, area limitations)
Methods In Choosing A Jaw Coupling
Stage 1: Ascertain the Nominal Torque of the application through the use of the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step 2: Making use of the Application Service Components Chart one select the support issue which best corresponds to your application.
Stage three: Determine the Style Torque of the application by multiplying the Nominal Torque calculated in Stage 1 through the Application Services Component established in Stage 2.
Layout Torque = Nominal Torque x Application Support Issue
Step 4: Making use of the Spider Effectiveness Data Chart 2， select the elastomer material which greatest corresponds for your application.
Phase 5: Utilizing the Jaw Nominal Rated Torque Chart 3 , find the acceptable elastomer material column for your elastomer picked in Step 4.
Scan down this column for the very first entry wherever the Torque Value within the appropriate column is greater than or equal on the Style and design Torque calculated in Phase three.
After this worth is located, refer to the corresponding coupling size in the 1st column with the Jaw Nominal Rated Torque Chart three .
Refer towards the maximum RPM value for this elastomer torque capability to make certain that the application requirements are met. In the event the requirement is not really satisfied at this time, a different kind of coupling could be essential for the application. Please seek advice from Lovejoy engineering for assistance.
Stage six: Examine the application driver/driven shaft sizes to your maximum bore 
size obtainable on the coupling chosen. If coupling bore size just isn’t massive sufficient to the shaft diameter, select the next biggest coupling that can accommodate the driver/driven shaft diameters.
Stage 7: Using the UPC amount variety table , discover the suitable Bore and Keyway sizes expected and find the amount.
