Jaw Style Coupling Assortment Process
The choice course of action for determining the appropriate jaw coupling size and elastomer calls for making use of the charts shown on the following pages. You will discover three components to become selected, two hubs and a single elastomer. Once the shaft dimension of your driver and driven of your application are in the identical diameter, the hubs picked will probably be the identical. When shaft diameters vary, hubs picked will vary accordingly.
Information and facts important prior to a coupling might be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven equipment and corresponding keyways
Application description
Environmental ailments (i.e. excessive temperature, corrosive circumstances, room limitations)
Ways In Selecting A Jaw Coupling
Step one: Identify the Nominal Torque of one’s application by utilizing the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step 2: Applying the Application Service Things Chart 1 pick the service issue which most effective corresponds for your application.
Step three: Calculate the Style and design Torque of your application by multiplying the Nominal Torque calculated in Step 1 from the Application Support Factor determined in Step 2.
Style and design Torque = Nominal Torque x Application Support Aspect
Stage four: Using the Spider Efficiency Information Chart 2, choose the elastomer material which most effective corresponds for your application.
Phase 5: Working with the Jaw Nominal Rated Torque Chart three , locate the suitable elastomer materials column for that elastomer selected in Phase 4.
Scan down this column to your initial entry wherever the Torque Value inside the appropriate column is better than or equal towards the Design Torque calculated in Phase 3.
As soon as this value is located, refer on the corresponding coupling dimension within the very first column with the Jaw Nominal Rated Torque Chart 3 .
Refer on the maximum RPM worth for this elastomer torque capability to ensure that the application requirements are met. Should the necessity isn’t satisfied at this time, an additional form of coupling could possibly be essential for that application. Please consult Lovejoy engineering for assistance.
Stage six: Assess the application driver/driven shaft sizes to the greatest bore size readily available around the coupling chosen. If coupling bore dimension is not really substantial sufficient for your shaft diameter, choose the next biggest coupling that will accommodate the driver/driven shaft diameters.
Phase 7: Employing the UPC number assortment table , discover the suitable Bore and Keyway sizes needed and locate the amount.