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Jaw Coupling Assortment Procedure

Jaw Form Coupling Selection Method
The variety approach for identifying the proper jaw coupling size and elastomer involves working with the charts shown within the following pages. You will discover 3 parts to become selected, two hubs and 1 elastomer. When the shaft size of the driver and driven from the application are in the very same diameter, the hubs selected will probably be the identical. When shaft diameters differ, hubs chosen will differ accordingly.
Data essential in advance of a coupling is often 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. intense temperature, corrosive circumstances, area limitations)
Techniques In Choosing A Jaw Coupling
Stage 1: Determine the Nominal Torque of one’s application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Stage two: Employing the Application Service Aspects Chart one choose the service aspect which ideal corresponds for your application.
Phase three: Determine the Style and design Torque of the application by multiplying the Nominal Torque calculated in Step 1 from the Application Support Component determined in Stage 2.
Layout Torque = Nominal Torque x Application Service Issue
Phase 4: Utilizing the Spider Performance Information Chart 2, pick the elastomer materials which ideal corresponds for your application.
Stage 5: Making use of the Jaw Nominal Rated Torque Chart three , locate the suitable elastomer materials column to the elastomer chosen in Stage four.
Scan down this column for the first entry wherever the Torque Worth while in the ideal column is better than or equal for the Style and design Torque calculated in Step three.
After this value is located, refer on the corresponding coupling size inside the 1st column from the Jaw Nominal Rated Torque Chart three .
Refer towards the optimum RPM worth for this elastomer torque capability to be sure the application demands are met. Should the necessity isn’t pleased at this point, an additional kind of coupling could be necessary for that application. Please consult Lovejoy engineering for assistance.
Stage six: Examine the application driver/driven shaft sizes to the optimum bore dimension available within the coupling chosen. If coupling bore size will not be significant ample for that shaft diameter, decide on the subsequent biggest coupling that could accommodate the driver/driven shaft diameters.
Step seven: Employing the UPC variety assortment table , obtain the ideal Bore and Keyway sizes needed and find the quantity.

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