Jaw Form Coupling Selection System
The assortment method for determining the proper jaw coupling 
size and elastomer needs making use of the charts proven around the following pages. You will discover 3 parts to get selected, two hubs and 1 elastomer. Once the shaft dimension of your driver and driven of the application are of the identical diameter, the hubs picked will probably be precisely the same. When shaft diameters vary, hubs picked will vary accordingly.
Info required just before a coupling could be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental conditions (i.e. intense temperature, corrosive disorders, space limitations)
Steps In Choosing A Jaw Coupling
Stage one: Decide the Nominal Torque of the application by using the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Making use of the Application Support Elements Chart 1 pick the support aspect which ideal corresponds to your application.
Step three: Determine the Style and design Torque of one’s application by multiplying the Nominal Torque calculated in Step 1 by the Application Service Issue determined in Stage 2.
Layout Torque = Nominal Torque x Application Support Factor
Stage 4: Applying the Spider Functionality Data Chart 2， choose the elastomer materials which best corresponds for your application.
Phase 5: Utilizing the Jaw Nominal Rated Torque Chart three , find the proper elastomer materials column for the elastomer selected in Step four.
Scan down this column on the initially entry the place the Torque Worth within the proper column is higher than or equal to the Design and style Torque calculated in Stage three.
After this worth is found, refer to the corresponding coupling size within the to start with column on the Jaw Nominal Rated Torque Chart three .
Refer to the highest RPM worth for this elastomer torque capability to guarantee the application demands are met. Should the requirement just isn’t content at this point, an additional style of coupling might be expected for your application. Please seek advice from Lovejoy engineering for assistance.
Stage six: Assess the application driver/driven shaft sizes to the highest bore size out there on the coupling selected. If coupling bore size isn’t massive ample for the shaft diameter, select the next greatest coupling that may accommodate the driver/driven shaft diameters.
Step 7: Applying the UPC variety choice table , uncover the suitable Bore and Keyway sizes demanded and find the variety.
