Jaw Sort Coupling Selection Method
The variety approach for figuring out the appropriate jaw coupling size and elastomer requires working with the charts proven within the following pages. There are actually 3 elements to get picked, two hubs and a single elastomer. Once the shaft size of the driver and driven on the application are of the exact same diameter, the hubs chosen will probably be the identical. When shaft diameters differ, hubs chosen will vary accordingly.
Data needed just before a coupling is often picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental problems (i.e. extreme temperature, corrosive circumstances, space limitations)
Measures In Picking A Jaw Coupling
Phase 1: Determine the Nominal Torque of your application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Employing the Application Service Aspects Chart 1 select the support component which most effective corresponds for your application.
Phase three: Determine the Layout Torque of your application by multiplying the Nominal Torque calculated in Stage 1 through the Application Support Component established in Step two.
Style Torque = Nominal Torque x Application Service Issue
Phase 4: Working with the Spider Effectiveness Data Chart 2, choose the elastomer materials which most effective corresponds for your application.
Stage five: Making use of the Jaw Nominal Rated Torque Chart 3 , find the proper elastomer materials column to the elastomer picked in Step four.
Scan down this column to your initially entry where the Torque Value while in the ideal column is higher than or equal towards the Design Torque calculated in Stage three.
Once this value is located, refer towards the corresponding coupling dimension from the initial column from the Jaw Nominal Rated Torque Chart three .
Refer towards the optimum RPM worth for this elastomer torque capability to make certain that the application specifications are met. When the requirement isn’t pleased at this time, a further form of coupling can be expected for the application. Please consult Lovejoy engineering for assistance.
Step six: Review the application driver/driven shaft sizes on the optimum bore size available within the coupling selected. If coupling bore size just isn’t big ample for the shaft diameter, pick the subsequent largest coupling that can accommodate the driver/driven shaft diameters.
Phase 7: Employing the UPC number variety table , obtain the proper Bore and Keyway sizes required and locate the number.