Jaw Coupling Assortment Process

Jaw Variety Coupling Selection Approach
The assortment approach for identifying the right jaw coupling size and elastomer involves using the charts shown on the following pages. You will find 3 parts to be selected, two hubs and one elastomer. Once the shaft dimension of the driver and driven from the application are with the similar diameter, the hubs selected will likely be exactly the same. When shaft diameters vary, hubs picked will vary accordingly.
Facts vital just before a coupling is often picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental ailments (i.e. severe temperature, corrosive disorders, room limitations)
Techniques In Deciding on A Jaw Coupling
Step one: Figure out the Nominal Torque of your application through the use of the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Working with the Application Support Elements Chart one decide on the services issue which best corresponds to your application.
Stage 3: Calculate the Design Torque of one’s application by multiplying the Nominal Torque calculated in Phase 1 through the Application Support Issue determined in Phase 2.
Design Torque = Nominal Torque x Application Service Element
Stage four: Applying the Spider Effectiveness Data Chart 2， choose the elastomer materials which best corresponds for your application.
Step five: Using the Jaw Nominal Rated Torque Chart 3 , find the acceptable elastomer materials column for the elastomer selected in Step 4.
Scan down this column to the to start with entry the place the Torque Worth inside the ideal column is better than or equal to the Design Torque calculated in Step three.
When this value is found, refer towards the corresponding coupling size during the very first column from the Jaw Nominal Rated Torque Chart 3 .
Refer towards the optimum RPM value for this elastomer torque capability to ensure the application demands are met. When the necessity is not really satisfied at this time, another style of coupling may very well be necessary for the application. Please consult Lovejoy engineering for assistance.
Stage 6: Assess the application driver/driven shaft sizes to the highest bore dimension readily available over the coupling picked. If coupling bore size is just not substantial ample for the shaft diameter, decide on the following greatest coupling which will accommodate the driver/driven shaft diameters.
Stage seven: Working with the UPC amount selection table , locate the proper Bore and Keyway sizes necessary and locate the number.