System
S-Flex Coupling Selection Method
The assortment system for identifying the proper S-Flex coupling calls for making use of the charts shown on the following pages. You will discover 3 components to become selected, two flanges and one particular sleeve.
Facts important ahead of a coupling is often chosen:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven equipment and corresponding keyways
Application or tools description
Environmental problems (i.e. excessive temperature, corrosive ailments, room limitations)
Methods In Selecting An S-Flex Coupling
Stage 1: Determine the Nominal Torque in in-lb of the application by utilizing the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase two: Employing the Application Support Factor Chart one pick the services element which best corresponds to your application.
Stage three: Calculate the Style and design Torque of one’s application by multiplying the Nominal Torque calculated in Phase one through the Application Support Element established in Phase 2.
Design Torque = Nominal Torque x Application Service Aspect
Step 4: Working with the Sleeve Effectiveness Data Chart 2 choose the sleeve materials which ideal corresponds to your application.
Stage 5: Using the S-Flex Nominal Rated Torque Chart three find the proper sleeve material column for that sleeve selected in Phase 4.
Phase six: Scan down this column on 
the very first entry wherever the Torque Worth during the column is better than or equal to the Style and design Torque calculated in Stage three.
Refer for the maximum RPM value of your coupling size to ensure the application specifications are met. In the event the maximum RPM value is significantly less compared to the application requirement, S-Flex couplings will not be encouraged for the application.
Note:
If Nominal Torque is significantly less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. The moment torque value is located, refer to the corresponding coupling dimension within the initial column on the S-Flex Nominal Rated Torque Data Chart three .
Stage seven: Review the application driver/driven shaft sizes to your maximum bore dimension offered to the coupling picked. If coupling max bore is not really huge adequate for the shaft diameter, choose the subsequent greatest coupling that may accommodate the driver/driven shaft diameters.
Step 8: Utilizing the Item Choice tables, locate the appropriate Keyway and Bore dimension required and find the variety.
