Jaw Kind Coupling Choice Course of action
The choice procedure for figuring out the correct jaw coupling size and elastomer demands working with the charts shown over the following pages. There are actually three components for being chosen, two hubs and 1 elastomer. Once the shaft dimension in the driver and driven in the application are from the same diameter, the hubs picked are going to be the same. When shaft diameters vary, hubs selected will vary accordingly.
Information required ahead of 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 problems (i.e. severe temperature, corrosive conditions, room limitations)
Ways In Selecting A Jaw Coupling
Phase 1: Establish the Nominal Torque of one’s application through the use of the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Utilizing the Application Support Factors Chart one decide on the service aspect which very best corresponds for your application.
Phase three: Determine the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Stage 1 by the Application Services Aspect established in Phase two.
Design and style Torque = Nominal Torque x Application Service Issue
Step four: Working with the Spider Efficiency Information Chart 2, decide on the elastomer materials which most effective corresponds to your application.
Phase five: Employing the Jaw Nominal Rated Torque Chart 3 , find the appropriate elastomer material column to the elastomer chosen in Phase 4.
Scan down this column for the to start with entry the place the Torque Worth while in the ideal column is better than or equal towards the Layout Torque calculated in Step 3.
As soon as this value is found, refer to your corresponding coupling size within the very first column on the Jaw Nominal Rated Torque Chart three .
Refer to the optimum RPM worth for this elastomer torque capability to ensure the application needs are met. When the necessity is not satisfied at this time, another style of coupling could possibly be expected for your application. Please check with Lovejoy engineering for help.
Phase six: Compare the application driver/driven shaft sizes to your optimum bore dimension offered around the coupling picked. If coupling bore dimension isn’t significant ample for the shaft diameter, choose the subsequent largest coupling that could accommodate the driver/driven shaft diameters.
Stage 7: Employing the UPC quantity selection table , come across the appropriate Bore and Keyway sizes expected and find the quantity.