Jaw Coupling Choice Process

Jaw Form Coupling Assortment Procedure
The assortment process for identifying the correct jaw coupling size and elastomer calls for using the charts proven within the following pages. You will find 3 parts to be chosen, two hubs and 1 elastomer. Once the shaft dimension of your driver and driven in the application are in the same diameter, the hubs chosen is going to be precisely the same. When shaft diameters vary, hubs selected will differ accordingly.
Details essential just before a coupling is usually 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. excessive temperature, corrosive disorders, space limitations)
Actions In Choosing A Jaw Coupling
Step one: Identify the Nominal Torque of the application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Utilizing the Application Service Variables Chart 1 select the services component which most effective corresponds to your application.
Stage three: Calculate the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Phase 1 from the Application Service Aspect determined in Stage 2.
Layout Torque = Nominal Torque x Application Services Issue
Phase four: Applying the Spider Performance Data Chart 2， pick the elastomer materials which most effective corresponds to your application.
Step five: Working with the Jaw Nominal Rated Torque Chart 3 , find the ideal elastomer material column for that elastomer chosen in Stage 4.
Scan down this column towards the very first entry where the Torque Value inside the acceptable column is greater than or equal towards the Design and style Torque calculated in Stage 3.
As soon as this worth is located, refer to your corresponding coupling dimension while in the initial column with the Jaw Nominal Rated Torque Chart 3 .
Refer towards the highest RPM worth for this elastomer torque capability to make certain that the application specifications are met. When the necessity is not really satisfied at this time, another form of coupling may be necessary to the application. Please seek advice from Lovejoy engineering for help.
Step six: Examine the application driver/driven shaft sizes to the highest bore dimension available over the coupling selected. If coupling bore dimension is just not significant ample for the shaft diameter, pick the next greatest coupling that will accommodate the driver/driven shaft diameters.
Phase seven: Utilizing the UPC quantity selection table , come across the acceptable Bore and Keyway sizes expected and find the variety.