Jaw Form Coupling Selection Process
The variety system for figuring out the correct jaw coupling size and elastomer needs working with the charts shown within the following pages. You will find three parts to get chosen, two hubs and 1 elastomer. When the shaft size in the driver and driven on the application are in the same diameter, the hubs selected will probably be exactly the same. When shaft diameters differ, hubs picked will vary accordingly.
Information needed in advance of a coupling is usually selected:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental circumstances (i.e. extreme temperature, corrosive problems, room limitations)
Techniques In Picking A Jaw Coupling
Step 1: Establish the Nominal Torque of your application by using the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Stage 2: Utilizing the Application Support Components Chart 1 choose the support aspect which ideal corresponds to your application.
Phase 3: Determine the Design Torque of your application by multiplying the Nominal Torque calculated in Step one by the Application Services Aspect established in Stage two.
Layout Torque = Nominal Torque x Application Service Aspect
Stage four: Working with the Spider Performance Data Chart 2, pick the elastomer materials which very best corresponds to your application.
Phase five: Working with the Jaw Nominal Rated Torque Chart 3 , locate the suitable elastomer material column for your elastomer selected in Step 4.
Scan down this column on the initial entry where the Torque Value within the suitable column is greater than or equal on the Style Torque calculated in Phase three.
When this value is found, refer towards the corresponding coupling size inside the initially column in the Jaw Nominal Rated Torque Chart 3 .
Refer to the maximum RPM worth for this elastomer torque capability to be sure that the application demands are met. Should the necessity is not happy at this time, yet another kind of coupling might be essential for your application. Please talk to Lovejoy engineering for help.
Phase six: Review the application driver/driven shaft sizes to the optimum bore size out there over the coupling selected. If coupling bore dimension is not substantial enough to the shaft diameter, decide on the next largest coupling that will accommodate the driver/driven shaft diameters.
Phase seven: Employing the UPC amount variety table , locate the suitable Bore and Keyway sizes necessary and find the quantity.