Jaw Style Coupling Selection Process
The selection system for figuring out the appropriate jaw coupling dimension and elastomer calls for utilizing the charts proven within the following pages. You will find 3 components to become selected, two hubs and one elastomer. Once the shaft dimension in the driver and driven on the application are with the exact same diameter, the hubs picked will probably be precisely the same. When shaft diameters differ, hubs chosen will differ accordingly.
Information vital prior to a coupling may be picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental problems (i.e. severe temperature, corrosive problems, room limitations)
Actions In Choosing A Jaw Coupling
Stage one: Ascertain the Nominal Torque of your application through the use of the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase 2: Employing the Application Support Factors Chart one choose the services aspect which greatest corresponds to your application.
Step 3: Calculate the Layout Torque of your application by multiplying the Nominal Torque calculated in Phase 1 from the Application Services Aspect established in Step two.
Design and style Torque = Nominal Torque x Application Services Aspect
Phase 4: Utilizing the Spider Efficiency Information Chart 2, choose the elastomer material which very best corresponds for your application.
Stage five: Using the Jaw Nominal Rated Torque Chart 3 , locate the suitable elastomer material column for the elastomer picked in Stage 4.
Scan down this column towards the 1st entry in which the Torque Value inside the ideal column is greater than or equal to your Design Torque calculated in Step three.
The moment this worth is located, refer towards the corresponding coupling size from the first column in the Jaw Nominal Rated Torque Chart three .
Refer towards the maximum RPM worth for this elastomer torque capability to make certain the application necessities are met. If your necessity just isn’t happy at this point, another kind of coupling might be essential to the application. Please check with Lovejoy engineering for help.
Step 6: Evaluate the application driver/driven shaft sizes to your highest bore dimension out there about the coupling chosen. If coupling bore dimension is not huge ample to the shaft diameter, select the subsequent largest coupling which will accommodate the driver/driven shaft diameters.
Phase 7: Working with the UPC quantity variety table , find the proper Bore and Keyway sizes expected and find the variety.