Jaw Kind Coupling Choice System
The selection method for figuring out the correct jaw coupling dimension and elastomer necessitates applying the charts proven over the following pages. You can find 3 parts to be picked, two hubs and a single elastomer. When the shaft dimension of your driver and driven with the application are from the very same diameter, the hubs chosen will likely be the exact same. When shaft diameters vary, hubs selected will vary accordingly.
Facts necessary prior to a coupling is usually picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven tools and corresponding keyways
Application description
Environmental ailments (i.e. extreme temperature, corrosive situations, area limitations)
Steps In Picking A Jaw Coupling
Step one: Identify the Nominal Torque of your application through the use of the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Using the Application Services Elements Chart 1 pick the services issue which best corresponds to your application.
Stage 3: Determine the Design Torque of the application by multiplying the Nominal Torque calculated in Step one by the Application Services Issue established in Phase 2.
Design Torque = Nominal Torque x Application Service Factor
Step four: Applying the Spider Effectiveness Information Chart 2, select the elastomer materials which best corresponds to your application.
Step 5: Employing the Jaw Nominal Rated Torque Chart 3 , find the suitable elastomer material column for the elastomer chosen in Step 4.
Scan down this column towards the 1st entry exactly where the Torque Value in the acceptable column is greater than or equal on the Style and design Torque calculated in Step three.
Once this worth is located, refer for the corresponding coupling size within the first column in the Jaw Nominal Rated Torque Chart 3 .
Refer to your optimum RPM worth for this elastomer torque capability to guarantee the application prerequisites are met. If the requirement will not be content at this time, another type of coupling could possibly be demanded for your application. Please check with Lovejoy engineering for assistance.
Phase six: Evaluate the application driver/driven shaft sizes for the highest bore size offered around the coupling selected. If coupling bore size is not really large enough for your shaft diameter, choose the following biggest coupling that should accommodate the driver/driven shaft diameters.
Step 7: Working with the UPC quantity choice table , come across the suitable Bore and Keyway sizes necessary and find the variety.