Jaw Kind Coupling Assortment System
The variety method for identifying the correct jaw coupling dimension and elastomer necessitates making use of the charts proven about the following pages. You can find three parts to get picked, two hubs and one elastomer. When the shaft size of your driver and driven in the application are in the exact same diameter, the hubs chosen might be the exact same. When shaft diameters differ, hubs chosen will vary accordingly.
Facts important prior to a coupling might be picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental problems (i.e. severe temperature, corrosive situations, room limitations)
Steps In Selecting A Jaw Coupling
Step 1: Identify the Nominal Torque of the application through the use of the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase two: Using the Application Service Elements Chart 1 choose the support issue which greatest corresponds for your application.
Step 3: Determine the Design Torque of one’s application by multiplying the Nominal Torque calculated in Stage one by the Application Support Issue determined in Stage two.
Design Torque = Nominal Torque x Application Support Factor
Phase four: Making use of the Spider Effectiveness Data Chart 2, select the elastomer material which greatest corresponds for your application.
Step five: Employing the Jaw Nominal Rated Torque Chart 3 , find the appropriate elastomer material column to the elastomer chosen in Stage 4.
Scan down this column to your 1st entry in which the Torque Value while in the acceptable column is better than or equal on the Style Torque calculated in Stage 3.
When this worth is found, refer to the corresponding coupling size from the first column of the Jaw Nominal Rated Torque Chart 3 .
Refer for the optimum RPM value for this elastomer torque capability to guarantee that the application prerequisites are met. In case the requirement just isn’t content at this point, yet another form of coupling could possibly be needed to the application. Please consult Lovejoy engineering for assistance.
Stage six: Review the application driver/driven shaft sizes for the greatest bore size out there around the coupling picked. If coupling bore size just isn’t huge adequate for your shaft diameter, decide on the following greatest coupling that should accommodate the driver/driven shaft diameters.
Phase seven: Utilizing the UPC amount variety table , come across the ideal Bore and Keyway sizes necessary and locate the variety.