Method
S-Flex Coupling Variety System
The choice approach for figuring out the right S-Flex coupling requires applying the charts proven about the following pages. You will find 3 parts to get chosen, two flanges and one sleeve.
Details required prior to a coupling could be picked:
HP and RPM of Driver or running torque
Shaft size of Driver and Driven products and corresponding keyways
Application or equipment description
Environmental conditions (i.e. intense temperature, corrosive situations, area limitations)
Actions In Deciding on An S-Flex Coupling
Step one: Establish the Nominal Torque in in-lb of your application by using the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase 2: Making use of the Application Services Element Chart 1 choose the support component which greatest corresponds for your application.
Phase 3: Determine the Design and style Torque of the application by multiplying the Nominal Torque calculated in Step one by the Application Services Aspect established in Stage two.
Design and style Torque = Nominal Torque x Application Support Component
Phase four: Utilizing the Sleeve Efficiency Information Chart two decide on the sleeve material which very best corresponds for your application.
Phase five: Employing the S-Flex Nominal Rated Torque Chart 3 locate the ideal sleeve materials column for your sleeve chosen in Stage four.
Step 6: Scan down this column for the to start with entry exactly where the Torque Value while in the column is higher than or equal for the Style Torque calculated in Phase 3.
Refer to your greatest RPM worth in the coupling dimension to make certain that the application necessities are met. Should the highest RPM worth is less than the application necessity, S-Flex couplings are usually not suggested for that application.
Note:
If Nominal Torque is less than 1/4 with the coupling’s nominalrated torque, misalignment capacities are reduced by 1/2. When torque worth is found, refer for the corresponding coupling size from the initially column 
of the S-Flex Nominal Rated Torque Information Chart 3 .
Step 7: Evaluate the application driver/driven shaft sizes on the highest bore size available around the coupling picked. If coupling max bore isn’t significant enough for that shaft diameter, decide on the next biggest coupling which will accommodate the driver/driven shaft diameters.
Phase eight: Working with the Item Assortment tables, obtain the proper Keyway and Bore size essential and locate the amount.
