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Jaw Form Coupling Assortment Process
The assortment procedure for figuring out the appropriate jaw coupling dimension and elastomer requires utilizing the charts proven about the following pages. There are three parts to get selected, two hubs and 1 elastomer. When the shaft dimension with the driver and driven with the application are with the similar diameter, the hubs chosen is going to be precisely the same. When shaft diameters differ, hubs chosen will vary accordingly.
Information and facts important ahead of a coupling might be selected:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven tools and corresponding keyways
Application description
Environmental circumstances (i.e. extreme temperature, corrosive disorders, area limitations)
Steps In Picking out A Jaw Coupling
Stage one: Determine the Nominal Torque of the application through the use of the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Stage 2: Utilizing the Application Services Factors Chart 1 select the services component which best corresponds for your application.
Phase three: Determine the Style and design Torque of one’s application by multiplying the Nominal Torque calculated in Step 1 from the Application Service Element established in Phase 2.
Style Torque = Nominal Torque x Application Services Component
Stage 4: Making use of the Spider Performance Data Chart 2, pick the elastomer materials which ideal corresponds to your application.
Step 5: Using the Jaw Nominal Rated Torque Chart 3 , find the acceptable elastomer materials column for your elastomer picked in Stage four.
Scan down this column to the first entry wherever the Torque Value during the proper column is greater than or equal to the Style and design Torque calculated in Stage 3.
The moment this value is located, refer to the corresponding coupling size during the 1st column of the Jaw Nominal Rated Torque Chart three .
Refer on the maximum RPM worth for this elastomer torque capability to ensure the application prerequisites are met. In the event the requirement is not content at this point, an additional style of coupling may be essential to the application. Please check with Lovejoy engineering for support.
Phase 6: Assess the application driver/driven shaft sizes on the greatest bore size out there within the coupling picked. If coupling bore size is just not significant ample to the shaft diameter, select the following biggest coupling that can accommodate the driver/driven shaft diameters.
Stage 7: Using the UPC number variety table , obtain the ideal Bore and Keyway sizes needed and locate the quantity.