Jaw Style Coupling Choice Course of action
The selection system for identifying the correct jaw coupling dimension and elastomer calls for employing the charts proven within the following pages. You will find three parts to be selected, two hubs and 1 elastomer. Once the shaft dimension in the driver and driven of your application are from the same diameter, the hubs picked will likely be the identical. When shaft diameters vary, hubs chosen will differ accordingly.
Facts vital 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 problems (i.e. extreme temperature, corrosive conditions, area limitations)
Actions In Picking A Jaw Coupling
Step 1: Identify the Nominal Torque of one’s application by utilizing the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Phase two: Utilizing the Application Services Factors Chart one decide on the service element which finest corresponds to your application.
Phase 3: Determine the Design and style Torque of the application by multiplying the Nominal Torque calculated in Step one by the Application Service Aspect determined in Phase two.
Style and design Torque = Nominal Torque x Application Support Component
Stage four: Employing the Spider Overall performance Data Chart 2, choose the elastomer materials which most effective corresponds for your application.
Phase 5: Employing the Jaw Nominal Rated Torque Chart 3 , locate the acceptable elastomer materials column for the elastomer picked in Phase 4.
Scan down this column to the initially entry wherever the Torque Value inside the ideal column is greater than or equal towards the Style and design Torque calculated in Step three.
As soon as this worth is located, refer on the corresponding coupling dimension from the first column with the Jaw Nominal Rated Torque Chart 3 .
Refer to your maximum RPM value for this elastomer torque capability to ensure that the application necessities are met. If the requirement isn’t happy at this time, a different kind of coupling could be demanded for the application. Please seek advice from Lovejoy engineering for help.
Stage 6: Review the application driver/driven shaft sizes to your greatest bore size readily available over the coupling picked. If coupling bore size will not be substantial enough for that shaft diameter, decide on the subsequent largest coupling that should accommodate the driver/driven shaft diameters.
Stage 7: Using the UPC variety selection table , find the ideal Bore and Keyway sizes required and locate the variety.