Jaw Sort Coupling Assortment Procedure
The variety course of action for figuring out the appropriate jaw coupling dimension and elastomer calls for using the charts proven to the following pages. You will discover three components to become picked, two hubs and 1 elastomer. When the shaft size on the driver and driven on the application are of your exact same diameter, the hubs chosen is going to be precisely the same. When shaft diameters vary, hubs selected will vary accordingly.
Information and facts essential ahead of a coupling might be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven products and corresponding keyways
Application description
Environmental conditions (i.e. extreme temperature, corrosive conditions, space limitations)
Ways In Deciding on A Jaw Coupling
Phase 1: Ascertain the Nominal Torque of the application by using the following formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Making use of the Application Support Variables Chart 1 decide on the service element which most effective corresponds to your application.
Step three: Determine the Design Torque of the application by multiplying the Nominal Torque calculated in Phase 1 from the Application Services Factor established in Step two.
Style and design Torque = Nominal Torque x Application Services Component
Step 4: Making use of the Spider Overall performance Information Chart 2, select the elastomer materials which ideal corresponds to your application.
Stage five: Utilizing the Jaw Nominal Rated Torque Chart three , locate the acceptable elastomer material column for that elastomer chosen in Stage 4.
Scan down this column for the initially entry wherever the Torque Worth within the proper column is higher than or equal for the Design and style Torque calculated in Phase 3.
As soon as this worth is located, refer to the corresponding coupling size inside the very first column from the Jaw Nominal Rated Torque Chart three .
Refer to the greatest RPM worth for this elastomer torque capability to make sure that the application necessities are met. When the requirement is just not pleased at this point, yet another variety of coupling may very well be essential to the application. Please talk to Lovejoy engineering for help.
Phase 6: Review the application driver/driven shaft sizes towards the highest bore size obtainable within the coupling picked. If coupling bore size will not be massive adequate for that shaft diameter, pick the subsequent largest coupling that may accommodate the driver/driven shaft diameters.
Phase seven: Applying the UPC quantity choice table , obtain the ideal Bore and Keyway sizes essential and find the number.