February 22, 2021

S-Flex Coupling Choice Procedure
The variety method for determining the correct S-Flex coupling involves making use of the charts shown on the following pages. You will discover three parts to be selected, two flanges and one particular sleeve.
Info vital before a coupling might be chosen:
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, room limitations)
Ways In Selecting An S-Flex Coupling
Step 1: Ascertain the Nominal Torque in in-lb of the application by using the following formula:
Nominal Torque = (HP x 63025)/RPM
Step 2: Working with the Application Support Aspect Chart one select the service component which greatest corresponds for your application.
Stage three: Determine the Style 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.
Stage 5: Employing the S-Flex Nominal Rated Torque Chart 3 locate the acceptable sleeve material column to the sleeve selected in Stage four.
Stage six: Scan down this column for the to start with entry the place the Torque Value while in the column is greater than or equal to your Style and design Torque calculated in Step 3.
Refer on the maximum RPM worth of the coupling dimension to make certain that the application requirements are met. If your maximum RPM value is less than the application necessity, S-Flex couplings are usually not proposed for that application.
If Nominal Torque is significantly less than 1/4 in the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. After torque value is found, refer for the corresponding coupling dimension during the to start with column with the S-Flex Nominal Rated Torque Data Chart three .
Stage 7: Assess the application driver/driven shaft sizes to your maximum bore dimension out there on the coupling selected. If coupling max bore will not be significant 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, discover the acceptable Keyway and Bore dimension expected and locate the variety.