February 22, 2021

S-Flex Coupling Variety Process
The variety system for determining the appropriate S-Flex coupling necessitates working with the charts shown on the following pages. You’ll find three elements to become chosen, two flanges and a single sleeve.
Information and facts vital just before a coupling could be chosen:
HP and RPM of Driver or running torque
Shaft dimension of Driver and Driven gear and corresponding keyways
Application or tools description
Environmental circumstances (i.e. intense temperature, corrosive ailments, room limitations)
Methods In Choosing An S-Flex Coupling
Step 1: Determine the Nominal Torque in in-lb of your application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase two: Employing the Application Service Issue Chart 1 select the service factor which ideal corresponds to your application.
Phase 3: Calculate the Design Torque of one’s application by multiplying the Nominal Torque calculated in Step 1 from the Application Services Aspect determined in Phase two.
Style Torque = Nominal Torque x Application Support Component
Step four: Using the Sleeve Effectiveness Information Chart 2 select the sleeve material which best corresponds to your application.
Stage five: Utilizing the S-Flex Nominal Rated Torque Chart three find the acceptable sleeve materials column for the sleeve selected in Phase four.
Phase 6: Scan down this column to the 1st entry wherever the Torque Value while in the column is greater than or equal to your Layout Torque calculated in Step 3.
Refer for the optimum RPM worth from the coupling size to make sure the application requirements are met. If the optimum RPM value is much less than the application necessity, S-Flex couplings are not proposed to the application.
If Nominal Torque is much less than 1/4 in the coupling’s nominalrated torque, misalignment capacities are diminished by 1/2. As soon as torque value is found, refer to your corresponding coupling size while in the initial column of the S-Flex Nominal Rated Torque Information Chart three .
Phase seven: Compare the application driver/driven shaft sizes for the maximum bore size readily available around the coupling chosen. If coupling max bore just isn’t substantial adequate for the shaft diameter, pick the next greatest coupling that could accommodate the driver/driven shaft diameters.
Step 8: Employing the Item Selection tables, come across the ideal Keyway and Bore size necessary and find the variety.