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Jaw Form Coupling Selection System
The choice method for figuring out the proper jaw coupling dimension and elastomer demands applying the charts proven within the following pages. You will find 3 elements to become chosen, two hubs and a single elastomer. When the shaft size of the driver and driven of your application are in the similar diameter, the hubs selected will likely be the same. When shaft diameters differ, hubs selected will differ accordingly.
Data required prior to a coupling may be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven tools and corresponding keyways
Application description
Environmental disorders (i.e. intense temperature, corrosive disorders, space limitations)
Ways In Selecting A Jaw Coupling
Step 1: Identify the Nominal Torque of the application by using the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Using the Application Services Components Chart 1 select the support element which ideal corresponds for your application.
Stage three: Calculate the Style Torque of one’s application by multiplying the Nominal Torque calculated in Step 1 by the Application Services Issue established in Stage 2.
Style Torque = Nominal Torque x Application Service Component
Stage four: Applying the Spider Efficiency Information Chart 2, decide on the elastomer material which greatest corresponds for your application.
Stage 5: Working with the Jaw Nominal Rated Torque Chart 3 , locate the acceptable elastomer material column to the elastomer chosen in Stage four.
Scan down this column for the initially entry in which the Torque Worth during the suitable column is better than or equal towards the Design Torque calculated in Phase 3.
When this worth is located, refer to your corresponding coupling size while in the 1st column of the Jaw Nominal Rated Torque Chart 3 .
Refer on the maximum RPM value for this elastomer torque capability to make certain that the application necessities are met. Should the necessity is not really satisfied at this time, one more style of coupling could be essential to the application. Please talk to Lovejoy engineering for support.
Step six: Evaluate the application driver/driven shaft sizes on the optimum bore size out there over the coupling selected. If coupling bore dimension is not really big enough for that shaft diameter, select the following biggest coupling that will accommodate the driver/driven shaft diameters.
Step 7: Using the UPC quantity assortment table , locate the acceptable Bore and Keyway sizes needed and find the number.