Method
S-Flex Coupling Selection Process
The variety process for determining the correct S-Flex coupling calls for using the charts shown on the following pages. You will discover three parts for being selected, two flanges and one particular sleeve.
Info vital before a coupling might be selected:
HP and RPM of Driver or running torque
Shaft size of Driver and Driven tools and corresponding 
keyways
Application or gear description
Environmental disorders (i.e. intense temperature, corrosive ailments, area limitations)
Methods In Deciding on An S-Flex Coupling
Step 1: Ascertain the Nominal Torque in in-lb of one’s application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step 2: Working with the Application Support Aspect Chart one decide on the support issue which greatest corresponds for your application.
Stage three: Determine the Design Torque of your application by multiplying the Nominal Torque calculated in Stage one by the Application Service Element established in Stage 2.
Style and design Torque = Nominal Torque x Application Service Factor
Phase 4: Making use of the Sleeve Effectiveness Data Chart two decide on the sleeve materials which greatest corresponds for your application.
Step 5: Employing the S-Flex Nominal Rated Torque Chart three locate the proper sleeve materials column to the sleeve selected in Stage four.
Stage six: Scan down this column for the to start with entry in which the Torque Worth while in the column is better than or equal to your Style and design Torque calculated in Step 3.
Refer on the greatest RPM worth of the coupling dimension to make certain the application requirements are met. In case the greatest RPM value is less than the application necessity, S-Flex couplings will not be advisable to the application.
Note:
If Nominal Torque is significantly less than 1/4 in the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. After torque worth is found, refer for the corresponding coupling dimension while in the 1st column on the S-Flex Nominal Rated Torque Information Chart three .
Step 7: Assess the application driver/driven shaft sizes for the greatest bore dimension offered to the coupling selected. If coupling max bore will not be substantial sufficient for your shaft diameter, decide on the next biggest coupling that should accommodate the driver/driven shaft diameters.
Step eight: Making use of the Item Variety tables, obtain the acceptable Keyway and Bore dimension essential and find the variety.
