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Jaw Coupling Choice Process

Jaw Kind Coupling Assortment Procedure
The choice method for determining the right jaw coupling size and elastomer necessitates employing the charts shown around the following pages. You can find three components for being picked, two hubs and 1 elastomer. When the shaft size of your driver and driven in the application are with the same diameter, the hubs chosen are going to be exactly the same. When shaft diameters differ, hubs selected will vary accordingly.
Details required prior to a coupling might be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven products and corresponding keyways
Application description
Environmental situations (i.e. excessive temperature, corrosive disorders, room limitations)
Steps In Selecting A Jaw Coupling
Stage one: Identify 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 2: Making use of the Application Support Elements Chart 1 decide on the services issue which ideal corresponds for your application.
Phase 3: Calculate the Design and style Torque of your application by multiplying the Nominal Torque calculated in Step 1 from the Application Services Issue established in Step 2.
Design Torque = Nominal Torque x Application Support Element
Stage four: Making use of the Spider Efficiency Information Chart 2, select the elastomer material which finest corresponds to your application.
Step five: Using the Jaw Nominal Rated Torque Chart 3 , find the suitable elastomer materials column for your elastomer chosen in Phase 4.
Scan down this column on the 1st entry wherever the Torque Worth within the acceptable column is greater than or equal to the Style and design Torque calculated in Step three.
After this value is found, refer to the corresponding coupling dimension inside the first column of the Jaw Nominal Rated Torque Chart three .
Refer to the maximum RPM value for this elastomer torque capability to ensure the application prerequisites are met. Should the necessity is not happy at this time, a different kind of coupling could possibly be essential for that application. Please talk to Lovejoy engineering for support.
Phase 6: Assess the application driver/driven shaft sizes for the maximum bore dimension out there around the coupling picked. If coupling bore dimension is not large ample for the shaft diameter, pick the following largest coupling which will accommodate the driver/driven shaft diameters.
Stage seven: Making use of the UPC variety choice table , come across the suitable Bore and Keyway sizes expected and find the variety.


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