Jaw Variety Coupling Choice Procedure
The variety method for determining the right jaw coupling dimension and elastomer needs making use of the charts shown over the following pages. You’ll find 3 components to become picked, two hubs and 1 elastomer. When the shaft size on the driver and driven in the application are in the exact same diameter, the hubs chosen is going to be the exact same. When shaft diameters differ, hubs picked will vary accordingly.
Information and facts necessary before a coupling could be picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven products and corresponding keyways
Application description
Environmental conditions (i.e. intense temperature, corrosive conditions, room limitations)
Steps In Choosing A Jaw Coupling
Phase 1: Determine the Nominal Torque of the application by utilizing the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Stage two: Working with the Application Services Elements Chart 1 decide on the service aspect which ideal corresponds for your application.
Stage three: Determine the Style Torque of your application by multiplying the Nominal Torque calculated in Phase 1 from the Application Support Element established in Phase 2.
Design and style Torque = Nominal Torque x Application Support Element
Step four: Using the Spider Performance Information Chart 2， choose the elastomer materials which greatest corresponds to your application.
Phase 5: Employing the Jaw Nominal Rated Torque Chart three , find the ideal elastomer material column to the elastomer selected in Step four.
Scan down this column to the very first entry the place the Torque Value during the appropriate column is higher than or equal for the Design Torque calculated in Step three.
Once this value is located, refer to the corresponding coupling dimension during the to start with column of your Jaw Nominal Rated Torque Chart 3 .
Refer for the highest RPM worth for this elastomer torque capability to make sure the application demands are met. Should the necessity is not really content at this point, one more sort of coupling may be expected for that application. Please seek the advice of Lovejoy engineering for support.
Phase 6: Compare the application driver/driven shaft sizes on the maximum bore size obtainable on the coupling selected. If coupling bore size is not really huge ample for your shaft diameter, pick the next greatest coupling that should accommodate the driver/driven shaft diameters.
Phase 7: Applying the UPC quantity 
selection table , discover the suitable Bore and Keyway sizes needed and locate the variety.
