Jaw Variety Coupling Selection Course of action
The selection process for determining the proper jaw coupling dimension and elastomer requires working with the charts shown around the following pages. There are three components to be chosen, two hubs and a single elastomer. When the shaft size of your driver and driven with the application are from the very same diameter, the hubs picked will probably be the exact same. When shaft diameters differ, hubs picked will vary accordingly.
Details essential before a coupling can be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental ailments (i.e. extreme temperature, corrosive ailments, room limitations)
Techniques In Picking out A Jaw Coupling
Step 1: Ascertain the Nominal Torque of the application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Applying the Application Service Variables Chart 1 decide on the support aspect which greatest corresponds to your application.
Stage three: Calculate the Design Torque of your application by multiplying the Nominal Torque calculated in Phase 1 by the Application Services Element established in Stage two.
Design Torque = Nominal Torque x Application Support Issue
Stage 4: Working with the Spider Overall performance Data Chart 2, pick the elastomer materials which very best corresponds for your application.
Step 5: Employing the Jaw Nominal Rated Torque Chart three , find the proper elastomer material column for your elastomer selected in Step four.
Scan down this column towards the 1st entry exactly where the Torque Worth from the appropriate column is higher than or equal to the Style and design Torque calculated in Phase 3.
As soon as this worth is located, refer to your corresponding coupling dimension inside the very first column of your Jaw Nominal Rated Torque Chart three .
Refer for the greatest RPM value for this elastomer torque capability to make sure that the application demands are met. If your necessity will not be content at this point, yet another form of coupling might be necessary for your application. Please check with Lovejoy engineering for support.
Phase six: Compare the application driver/driven shaft sizes for the optimum bore size offered to the coupling selected. If coupling bore dimension will not be large ample to the shaft diameter, decide on the following biggest coupling that should accommodate the driver/driven shaft diameters.
Step 7: Working with the UPC number assortment table , discover the acceptable Bore and Keyway sizes required and find the variety.