Course of action
S-Flex Coupling Selection Course of action
The assortment process for identifying the right S-Flex coupling necessitates making use of the charts shown over the following pages. There are three parts to become picked, two flanges and 1 sleeve.
Data necessary ahead of a coupling is usually picked:
HP and RPM of Driver or running torque
Shaft dimension of Driver and Driven equipment and corresponding keyways
Application or products description
Environmental conditions (i.e. extreme temperature, corrosive conditions, area limitations)
Techniques In Selecting An S-Flex Coupling
Step 1: Decide the Nominal Torque in in-lb of the application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step 2: Applying the Application Service Element Chart one choose the support component which most effective corresponds for your application.
Phase three: Determine the Style and design Torque of your application by multiplying the Nominal Torque calculated in Phase one by the Application Support Component established in Step two.
Design and style Torque = Nominal 
Torque x Application Services Factor
Phase 4: Using the Sleeve Effectiveness Data Chart 2 decide on the sleeve materials which finest corresponds for your application.
Step 5: Employing the S-Flex Nominal Rated Torque Chart 3 find the appropriate sleeve materials column for that sleeve selected in Phase four.
Phase 6: Scan down this column to the 1st entry exactly where the Torque Value while in the column is higher than or equal on the Design Torque calculated in Step 3.
Refer for the highest RPM value with the coupling size to be sure that the application needs are met. If your greatest RPM worth is less than the application requirement, S-Flex couplings aren’t suggested 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. Once torque worth is located, refer towards the corresponding coupling size in the 1st column of the S-Flex Nominal Rated Torque Information Chart 3 .
Stage 7: Examine the application driver/driven shaft sizes towards the maximum bore size offered around the coupling selected. If coupling max bore is not substantial sufficient to the shaft diameter, decide on the next greatest coupling which will accommodate the driver/driven shaft diameters.
Phase 8: Employing the Item Choice tables, discover the appropriate Keyway and Bore size necessary and find the quantity.
