Jaw Variety Coupling Selection Course of action
The selection course of action for identifying the correct jaw coupling dimension and elastomer requires applying the charts shown around the following pages. You can find three elements to become selected, two hubs and a single elastomer. Once the shaft size on the driver and driven in the application are on the similar diameter, the hubs picked will likely be the identical. When shaft diameters differ, hubs chosen will vary accordingly.
Facts needed before a coupling could be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental situations (i.e. excessive temperature, corrosive disorders, space limitations)
Techniques In Picking out A Jaw Coupling
Phase 1: Figure out the Nominal Torque of one’s application by using the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase two: Employing the Application Service Elements Chart one select the service element which greatest corresponds to your application.
Stage three: Determine the Design and style Torque of one’s application by multiplying the Nominal Torque calculated in Phase 1 through the Application Services Component determined in Stage 2.
Style Torque = Nominal Torque x Application Service Issue
Step four: Making use of the Spider Functionality Information Chart 2, pick the elastomer materials which very best corresponds to your application.
Stage five: Applying the Jaw Nominal Rated Torque Chart 3 , locate the acceptable elastomer materials column for your elastomer chosen in Phase 4.
Scan down this column to your very first entry exactly where the Torque Value inside the proper column is greater than or equal towards the Design and style Torque calculated in Phase 3.
As soon as this worth is located, refer for the corresponding coupling size from the initial column of your Jaw Nominal Rated Torque Chart three .
Refer for the optimum RPM worth for this elastomer torque capability to make certain that the application demands are met. If your requirement just isn’t satisfied at this point, a different variety of coupling may be expected for the application. Please check with Lovejoy engineering for assistance.
Stage six: Examine the application driver/driven shaft sizes for the optimum bore dimension offered on the coupling picked. If coupling bore dimension is not significant enough to the shaft diameter, pick the subsequent greatest coupling that will accommodate the driver/driven shaft diameters.
Stage 7: Working with the UPC number variety table , obtain the suitable Bore and Keyway sizes necessary and locate the variety.