Jaw Variety Coupling Variety Procedure
The selection method for determining the proper jaw coupling size and elastomer calls for utilizing the charts shown over the following pages. There are actually three elements to get chosen, two hubs and one particular elastomer. When the shaft dimension from the driver and driven in the application are from the same diameter, the hubs selected will likely be exactly the same. When shaft diameters vary, hubs chosen will vary accordingly.
Facts important in advance of a coupling may be selected:
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. excessive temperature, corrosive situations, room limitations)
Methods In Picking out A Jaw Coupling
Stage 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
Stage 2: Making use of the Application Services Elements Chart 1 select the support aspect which best corresponds to your application.
Stage 3: Calculate the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Phase one from the Application Services Issue established in Stage two.
Style and design Torque = Nominal Torque x Application Services Element
Step four: Employing the Spider Effectiveness Data Chart 2, choose the elastomer material which greatest corresponds to your application.
Step five: Employing the Jaw Nominal Rated Torque Chart 3 , locate the acceptable elastomer materials column for the elastomer chosen in Phase 4.
Scan down this column to the initial entry exactly where the Torque Worth during the appropriate column is greater than or equal towards the Style Torque calculated in Phase 3.
When this worth is located, refer to the corresponding coupling dimension while in the initially column with the Jaw Nominal Rated Torque Chart three .
Refer to your highest RPM value for this elastomer torque capability to make certain that the application needs are met. In the event the necessity will not be content at this time, another sort of coupling might be demanded to the application. Please check with Lovejoy engineering for assistance.
Stage six: Review the application driver/driven shaft sizes to the highest bore dimension offered around the coupling picked. If coupling bore size isn’t substantial sufficient to the shaft diameter, choose the following largest coupling that may accommodate the driver/driven shaft diameters.
Phase seven: Using the UPC variety choice table , come across the suitable Bore and Keyway sizes required and locate the quantity.