ep

February 19, 2021

Jaw Variety Coupling Assortment System
The selection system for figuring out the appropriate jaw coupling size and elastomer demands using the charts proven around the following pages. There are 3 components to become selected, two hubs and one elastomer. Once the shaft dimension of the driver and driven in the application are with the same diameter, the hubs chosen are going to be precisely the same. When shaft diameters vary, hubs selected will differ accordingly.
Information vital prior to a coupling may be chosen:
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. severe temperature, corrosive problems, room limitations)
Ways In Selecting A Jaw Coupling
Stage one: Ascertain the Nominal Torque of the application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Making use of the Application Support Components Chart one select the service aspect which very best corresponds to your application.
Step three: Calculate the Layout Torque of the application by multiplying the Nominal Torque calculated in Phase 1 by the Application Services Factor established in Phase two.
Design and style Torque = Nominal Torque x Application Service Aspect
Stage 4: Utilizing the Spider Efficiency Information Chart 2, select the elastomer material which best corresponds for your application.
Stage five: Working with the Jaw Nominal Rated Torque Chart 3 , find the suitable elastomer material column for the elastomer chosen in Step 4.
Scan down this column towards the 1st entry in which the Torque Worth inside the ideal column is better than or equal on the Style and design Torque calculated in Step 3.
The moment this worth is found, refer towards the corresponding coupling size from the initially column in the Jaw Nominal Rated Torque Chart three .
Refer to your maximum RPM worth for this elastomer torque capability to make certain the application demands are met. In case the necessity is not happy at this point, a further kind of coupling might be essential to the application. Please check with Lovejoy engineering for help.
Phase 6: Compare the application driver/driven shaft sizes to your optimum bore dimension out there within the coupling chosen. If coupling bore dimension will not be huge adequate for the shaft diameter, select the subsequent greatest coupling that will accommodate the driver/driven shaft diameters.
Stage 7: Employing the UPC number choice table , obtain the proper Bore and Keyway sizes essential and find the variety.