Jaw Style Coupling Selection System
The variety process for figuring out the right jaw coupling size and elastomer involves using the charts proven over the following pages. You’ll find 3 components to get chosen, two hubs and 1 elastomer. Once the shaft size on the driver and driven in the application are in the very same diameter, the hubs picked will probably be precisely the same. When shaft diameters differ, hubs chosen will differ accordingly.
Information and facts needed just before a coupling may be chosen:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven tools and corresponding keyways
Application description
Environmental ailments (i.e. severe temperature, corrosive circumstances, area limitations)
Measures In Choosing A Jaw Coupling
Stage one: Determine 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
Step 2: Making use of the Application Services Elements Chart one select the support issue which very best corresponds to your application.
Phase 3: Calculate the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Step 1 through the Application Support Element established in Phase 2.
Style and design Torque = Nominal Torque x Application Services Component
Step four: Utilizing the Spider Efficiency Data Chart 2， pick the elastomer material which finest corresponds to your application.
Phase five: Working with the Jaw Nominal Rated Torque Chart three , locate the proper elastomer materials column to the elastomer picked in Stage 4.
Scan down this column to your to start with entry in which the Torque Worth during the appropriate column is better than or equal for the Design and style Torque calculated in Stage 3.
When this value is located, refer for the corresponding coupling dimension inside the initial column on the Jaw Nominal Rated Torque Chart 3 .
Refer for the optimum RPM worth for this elastomer torque capability to make sure the application prerequisites are met. In case the requirement will not be pleased at this point, one more variety of coupling could possibly be essential for your application. Please seek the advice of Lovejoy engineering for support.
Phase 6: Assess the application driver/driven shaft sizes to the highest bore size offered to the coupling chosen. If coupling bore size just isn’t substantial adequate for the shaft diameter, decide on the subsequent largest coupling that will accommodate the driver/driven shaft diameters.
Step seven: Employing the UPC number selection table , discover the acceptable Bore and Keyway sizes needed and find the number.