Jaw Coupling Assortment Approach

Jaw Form Coupling Assortment Method
The variety system for determining the appropriate jaw coupling size and elastomer needs making use of the charts shown within the following pages. You will find three elements to get selected, two hubs and 1 elastomer. Once the shaft size in the driver and driven from the application are with the exact same diameter, the hubs picked are going to be the identical. When shaft diameters differ, hubs picked will differ accordingly.
Info needed ahead of a coupling could be chosen:
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 disorders, space limitations)
Techniques In Selecting A Jaw Coupling
Stage 1: Decide the Nominal Torque of the application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Employing the Application Service Components Chart one select the support factor which ideal corresponds for your application.
Phase three: Calculate the Layout Torque of your application by multiplying the Nominal Torque calculated in Phase 1 through the Application Support Aspect determined in Step two.
Layout Torque = Nominal Torque x Application Support Issue
Phase 4: Making use of the Spider Efficiency Data Chart 2, pick the elastomer material which ideal corresponds for your application.
Phase five: Using the Jaw Nominal Rated Torque Chart three , locate the ideal elastomer materials column to the elastomer picked in Phase four.
Scan down this column to your first entry the place the Torque Worth while in the suitable column is better than or equal towards the Design and style Torque calculated in Phase 3.
After this value is found, refer to the corresponding coupling dimension from the 1st column of your Jaw Nominal Rated Torque Chart three .
Refer towards the greatest RPM value for this elastomer torque capability to make sure that the application demands are met. In case the necessity isn’t happy at this point, one more form of coupling may be necessary for that application. Please consult Lovejoy engineering for help.
Stage 6: Review the application driver/driven shaft sizes to the maximum bore dimension available to the coupling picked. If coupling bore dimension just isn’t massive adequate for that shaft diameter, select the next greatest coupling that can accommodate the driver/driven shaft diameters.
Phase seven: Utilizing the UPC variety assortment table , discover the ideal Bore and Keyway sizes demanded and locate the quantity.