Jaw Kind Coupling Variety Course of action
The variety process for determining the proper jaw coupling size and elastomer requires working with the charts proven to the following pages. You’ll find 3 elements to get selected, two hubs and one elastomer. Once the shaft size of your driver and driven on the application are from the same diameter, the hubs picked will likely be the same. When shaft diameters vary, hubs selected will differ accordingly.
Information necessary in advance of a coupling might 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. extreme temperature, corrosive ailments, space limitations)
Techniques In Picking out A Jaw Coupling
Stage 1: Determine the Nominal Torque of the application by using the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Employing the Application Support Variables Chart one decide on the service issue which ideal corresponds for your application.
Step three: Calculate the Layout Torque of your application by multiplying the Nominal Torque calculated in Stage one through the Application Services Factor determined in Stage 2.
Design and style Torque = Nominal Torque x Application Service Factor
Step four: Applying the Spider Effectiveness Data Chart 2, choose the elastomer material which very best corresponds for your application.
Step five: Employing the Jaw Nominal Rated Torque Chart 3 , locate the acceptable elastomer material column for your elastomer chosen in Phase 4.
Scan down this column for the initial entry wherever the Torque Value during the ideal column is higher than or equal to the Style Torque calculated in Step 3.
After this value is located, refer towards the corresponding coupling dimension while in the first column in the Jaw Nominal Rated Torque Chart three .
Refer on the highest RPM worth for this elastomer torque capability to make sure the application prerequisites are met. If your necessity isn’t satisfied at this time, a different sort of coupling may very well be demanded for the application. Please talk to Lovejoy engineering for help.
Phase six: Assess the application driver/driven shaft sizes on the maximum bore size obtainable on the coupling selected. If coupling bore size is just not massive adequate to the shaft diameter, select the next largest coupling that should accommodate the driver/driven shaft diameters.
Stage seven: Applying the UPC amount variety table , obtain the ideal Bore and Keyway sizes necessary and find the number.