Jaw Style Coupling Selection Approach
The choice process for determining the right jaw coupling dimension and elastomer demands making use of the charts shown to the following pages. You can find 3 elements for being chosen, two hubs and a single elastomer. Once the shaft size on the driver and driven on the application are of your very same diameter, the hubs picked is going to be the same. When shaft diameters vary, hubs selected will differ accordingly.
Facts needed in advance of a coupling is often chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven products and corresponding keyways
Application description
Environmental conditions (i.e. severe temperature, corrosive ailments, area limitations)
Measures In Picking out A Jaw Coupling
Step 1: Identify the Nominal Torque of your application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase two: Working with the Application Support Variables Chart one decide on the service component which very best corresponds to your application.
Step 3: Determine the Style and design Torque of your application by multiplying the Nominal Torque calculated in Step 1 through the Application Services Factor determined in Step 2.
Design and style Torque = Nominal Torque x Application Services Element
Step four: Applying the Spider Effectiveness Data Chart 2, decide on the elastomer materials which finest corresponds to your application.
Phase five: Applying the Jaw Nominal Rated Torque Chart three , locate the ideal elastomer material column for that elastomer chosen in Step 4.
Scan down this column to your initial entry where the Torque Worth within the suitable column is greater than or equal to the Layout Torque calculated in Stage 3.
When this worth is found, refer on the corresponding coupling dimension from the initially column from the Jaw Nominal Rated Torque Chart 3 .
Refer to your greatest RPM value for this elastomer torque capability to ensure the application requirements are met. In case the necessity is just not content at this time, another form of coupling could possibly be expected for that application. Please talk to Lovejoy engineering for help.
Phase 6: Examine the application driver/driven shaft sizes to your highest bore dimension available around the coupling selected. If coupling bore size just isn’t large ample for the shaft diameter, pick the subsequent greatest coupling which will accommodate the driver/driven shaft diameters.
Step 7: Using the UPC amount assortment table , come across the proper Bore and Keyway sizes required and locate the amount.