Procedure
S-Flex Coupling Assortment Procedure
The variety method for identifying the correct S-Flex coupling necessitates employing the charts proven over the following pages. You will discover three elements for being picked, two flanges and one particular sleeve.
Information required prior to a coupling is usually picked:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven equipment and corresponding keyways
Application or equipment description
Environmental conditions (i.e. severe temperature, corrosive problems, area limitations)
Methods In Deciding on An S-Flex Coupling
Stage 1: Establish the Nominal Torque in in-lb of the application by utilizing the following formula:
Nominal Torque = (HP x 63025)/RPM
Stage two: Employing the Application Services Element Chart one choose the service factor which finest corresponds to your application.
Phase three: Calculate the Layout Torque of the application by multiplying the Nominal Torque calculated in Stage one from the Application Services Component determined in Step two.
Style Torque = Nominal Torque x Application Support Aspect
Stage four: Employing the Sleeve Efficiency Data Chart two decide on the sleeve material which most effective corresponds to your application.
Step 5: Making use of the S-Flex Nominal Rated Torque Chart three find the appropriate sleeve material column for your sleeve picked in Stage four.
Step six: Scan down this column to the very first entry in which the Torque Value during the column is better than or equal to your Style and design Torque calculated in Phase three.
Refer for the highest RPM value with the coupling size to be sure the application prerequisites are met. If your maximum RPM worth is much less than the 
application necessity, S-Flex couplings are certainly not suggested for that application.
Note:
If Nominal Torque is significantly less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are decreased by 1/2. The moment torque worth is found, refer for the corresponding coupling dimension inside the 1st column of your S-Flex Nominal Rated Torque Information Chart three .
Stage seven: Compare the application driver/driven shaft sizes to your greatest bore dimension available on the coupling chosen. If coupling max bore is not really huge adequate for your shaft diameter, pick the subsequent largest coupling that can accommodate the driver/driven shaft diameters.
Stage eight: Applying the Item Variety tables, discover the acceptable Keyway and Bore dimension necessary and find the amount.