Process
S-Flex Coupling Choice Method
The variety process for determining the proper S-Flex coupling needs making use of the charts proven around the following pages. You can find 3 components to be selected, two flanges and a single sleeve.
Facts important ahead 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 gear description
Environmental situations (i.e. severe temperature, corrosive ailments, room limitations)
Techniques In Selecting An S-Flex Coupling
Stage 1: Identify the Nominal Torque in in-lb of one’s application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step two: Working with 
the Application Support Factor Chart one decide on the services aspect which most effective corresponds to your application.
Step three: Calculate the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Stage 1 from the Application Support Issue determined in Step 2.
Style and design Torque = Nominal Torque x Application Services Factor
Step 4: Employing the Sleeve Effectiveness Data Chart 2 choose the sleeve materials which ideal corresponds to your application.
Step five: Utilizing the S-Flex Nominal Rated Torque Chart 3 find the suitable sleeve materials column for the sleeve selected in Step 4.
Stage six: Scan down this column to your very first entry the place the Torque Worth in the column is greater than or equal to the Style and design Torque calculated in Stage three.
Refer on the optimum RPM worth of the coupling size to guarantee that the application specifications are met. When the greatest RPM value is much less compared to the application requirement, S-Flex couplings usually are not advisable for the application.
Note:
If Nominal Torque is much less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. The moment torque value is found, refer to the corresponding coupling size inside the first column in the S-Flex Nominal Rated Torque Data Chart 3 .
Stage 7: Assess the application driver/driven shaft sizes to your optimum bore size obtainable about the coupling selected. If coupling max bore is not really massive adequate for the shaft diameter, choose the subsequent greatest coupling that may accommodate the driver/driven shaft diameters.
Step 8: Utilizing the Item Selection tables, discover the ideal Keyway and Bore size needed and find the number.
