Jaw Form Coupling Assortment Method
The variety system for determining the appropriate jaw coupling dimension and elastomer needs making use of the charts shown about 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 vary accordingly.
Details needed in advance of a coupling might be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental circumstances (i.e. excessive temperature, corrosive disorders, space limitations)
Techniques In Selecting A Jaw Coupling
Phase 1: Establish the Nominal Torque of the application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Stage two: Employing the Application Service Components Chart one select the service aspect which ideal corresponds for your application.
Phase 3: 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 four: Making use of the Spider Efficiency Data Chart 2， pick the elastomer material which finest corresponds for your application.
Phase five: Using the Jaw Nominal Rated Torque Chart three , locate the ideal elastomer materials column to the elastomer selected in Phase four.
Scan down this column to your first entry wherever 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 initially column of the Jaw Nominal Rated Torque Chart three .
Refer for the greatest RPM value for this elastomer torque capability to make certain that the application demands are met. In case the necessity isn’t happy at this time, a different form of coupling might be necessary for that application. Please seek the advice of Lovejoy engineering for help.
Stage 6: Review the application driver/driven shaft sizes to the maximum bore size available over the coupling picked. If coupling bore dimension just isn’t substantial 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 , locate the ideal Bore and Keyway sizes required and locate the quantity.
