Process
S-Flex Coupling Choice Course of action
The variety process for determining the correct S-Flex coupling involves making use of the charts proven around the following pages. There are actually three elements for being chosen, two flanges and one particular sleeve.
Information and facts vital in advance of a coupling is usually chosen:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven equipment and corresponding keyways
Application or tools description
Environmental situations (i.e. excessive temperature, corrosive disorders, room limitations)
Techniques In Choosing An S-Flex Coupling
Phase 1: Determine the Nominal Torque in in-lb of the application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step two: Working with the Application Service Aspect Chart one decide on the support element which most effective corresponds to your application.
Stage three: Determine the Style and design Torque of one’s application by multiplying the Nominal Torque calculated in Stage 1 through the Application Support Issue determined in Step two.
Style and design Torque = Nominal Torque x Application Services Element
Stage four: Working with the Sleeve Performance Data Chart 2 pick the sleeve materials which finest corresponds to your application.
Stage five: Utilizing the S-Flex Nominal Rated Torque Chart three find the suitable sleeve materials column for the sleeve selected in Step 4.
Phase six: Scan down this column to your 1st entry the place the Torque Worth in the column is greater than or equal towards the Design Torque calculated in Stage three.
Refer on the optimum RPM value of the coupling size to ensure that the application needs are met. In case the greatest RPM value is significantly less compared to the application requirement, S-Flex couplings are certainly not advisable for the application.
Note:
If Nominal Torque is significantly less than 1/4 from the coupling’s nominalrated torque, misalignment capacities are diminished by 1/2. The moment torque value is found, refer towards the corresponding coupling size inside the very first column with the S-Flex Nominal Rated Torque Data Chart three .
Stage 7: Assess the 
application driver/driven shaft sizes to the optimum bore dimension obtainable to the coupling selected. If coupling max bore is not massive adequate for your shaft diameter, pick the subsequent greatest coupling that could accommodate the driver/driven shaft diameters.
Step 8: Making use of the Item Choice tables, uncover the appropriate Keyway and Bore size needed and find the number.
