February 22, 2021

S-Flex Coupling Choice Approach
The choice process for determining the appropriate S-Flex coupling requires using the charts shown within the following pages. You can find three parts to be selected, two flanges and a single sleeve.
Details required in advance of a coupling could be chosen:
HP and RPM of Driver or working torque
Shaft dimension of Driver and Driven gear and corresponding keyways
Application or tools description
Environmental circumstances (i.e. extreme temperature, corrosive problems, space limitations)
Ways In Picking An S-Flex Coupling
Step one: Figure out the Nominal Torque in in-lb of your application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step two: Making use of the Application Support Issue Chart 1 pick the service component which finest corresponds to your application.
Stage three: Calculate the Style and design Torque of your application by multiplying the Nominal Torque calculated in Stage 1 through the Application Support Element established in Step 2.
Design Torque = Nominal Torque x Application Services Component
Phase four: Applying the Sleeve Overall performance Data Chart two select the sleeve material which greatest corresponds for your application.
Phase five: Working with the S-Flex Nominal Rated Torque Chart 3 locate the suitable sleeve material column to the sleeve picked in Step four.
Phase 6: Scan down this column to your 1st entry wherever the Torque Value inside the column is better than or equal to the Style Torque calculated in Phase 3.
Refer to your optimum RPM worth of the coupling dimension to guarantee the application requirements are met. If your maximum RPM worth is less than the application requirement, S-Flex couplings usually are not encouraged for that application.
If Nominal Torque is less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are decreased by 1/2. After torque worth is located, refer towards the corresponding coupling dimension in the very first column on the S-Flex Nominal Rated Torque Data Chart three .
Phase seven: Review the application driver/driven shaft sizes to your highest bore dimension out there around the coupling picked. If coupling max bore will not be large ample for that shaft diameter, decide on the next greatest coupling that can accommodate the driver/driven shaft diameters.
Stage 8: Working with the Item Selection tables, obtain the ideal Keyway and Bore size needed and find the variety.