Jaw Kind Coupling Selection Procedure
The assortment method for determining the correct jaw coupling size and elastomer calls for making use of the charts proven within the following pages. There are 3 elements to become picked, two hubs and a single elastomer. When the shaft dimension of your driver and driven on the application are on the exact same diameter, the hubs selected is going to be the exact same. When shaft diameters differ, hubs chosen will differ accordingly.
Details essential prior to a coupling is often chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven tools and corresponding keyways
Application description
Environmental situations (i.e. excessive temperature, corrosive ailments, space limitations)
Methods In Selecting A Jaw Coupling
Step 1: Figure out the Nominal Torque of one’s application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step 2: Making use of the Application Services Things Chart 1 pick the support aspect which very best corresponds to your application.
Stage three: Determine the Layout Torque of the application by multiplying the Nominal Torque calculated in Stage 1 from the Application Service Element determined in Phase two.
Style and design Torque = Nominal Torque x Application Support Factor
Stage 4: Using the Spider Functionality Information Chart 2, select the elastomer materials which finest corresponds to your application.
Step five: Applying the Jaw Nominal Rated Torque Chart three , locate the ideal elastomer material column for your elastomer picked in Stage four.
Scan down this column for the 1st entry where the Torque Worth during the acceptable column is greater than or equal to the Design and style Torque calculated in Phase 3.
Once this value is located, refer on the corresponding coupling dimension inside the first column from the Jaw Nominal Rated Torque Chart three .
Refer on the maximum RPM value for this elastomer torque capability to guarantee that the application needs are met. In case the requirement is not really satisfied at this point, another kind of coupling could possibly be expected for that application. Please seek advice from Lovejoy engineering for support.
Phase 6: Compare the application driver/driven shaft sizes to the maximum bore size readily available about the coupling selected. If coupling bore dimension is not huge ample for the shaft diameter, choose the next greatest coupling which will accommodate the driver/driven shaft diameters.
Phase seven: Utilizing the UPC quantity variety table , find the proper Bore and Keyway sizes required and find the variety.