Jaw Kind Coupling Assortment Method
The assortment approach for figuring out the proper jaw coupling dimension and elastomer necessitates working with the charts shown on the following pages. You’ll find 3 elements to be selected, two hubs and 1 elastomer. Once the shaft dimension in the driver and driven of the application are from the very same diameter, the hubs picked will probably be exactly the same. When shaft diameters vary, hubs selected will differ accordingly.
Data required in advance of a coupling can be selected:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental circumstances (i.e. severe temperature, corrosive ailments, room limitations)
Methods In Deciding on A Jaw Coupling
Phase 1: Determine 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 two: Making use of the Application Support Factors Chart 1 decide on the service aspect which very best corresponds for your application.
Step three: Determine the 
Style Torque of one’s application by multiplying the Nominal Torque calculated in Stage 1 from the Application Service Element established in Stage two.
Design Torque = Nominal Torque x Application Service Aspect
Step four: Utilizing the Spider Efficiency Information Chart 2， choose the elastomer materials which most effective corresponds to your application.
Stage 5: Employing the Jaw Nominal Rated Torque Chart 3 , find the proper elastomer materials column for the elastomer chosen in Phase four.
Scan down this column on the initial entry where the Torque Value in the suitable column is better than or equal to the Style Torque calculated in Stage 3.
Once this value is located, refer towards the corresponding coupling size while in the first column with the Jaw Nominal Rated Torque Chart three .
Refer towards the maximum RPM value for this elastomer torque capability to make sure that the application needs are met. In case the requirement isn’t content at this point, one more style of coupling may very well be necessary for that application. Please seek advice from Lovejoy engineering for support.
Step 6: Evaluate the application driver/driven shaft sizes towards the maximum bore size obtainable to the coupling chosen. If coupling bore dimension will not be substantial ample for your shaft diameter, choose the subsequent greatest coupling that should accommodate the driver/driven shaft diameters.
Stage 7: Employing the UPC variety variety table , uncover the appropriate Bore and Keyway sizes needed and find the amount.
