System
S-Flex Coupling Choice Approach
The assortment method for figuring out the appropriate S-Flex coupling requires making use of the charts proven within the following pages. You will find 3 components to be chosen, two flanges and 1 sleeve.
Data required just before a coupling is usually chosen:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven products and corresponding keyways
Application or products description
Environmental circumstances (i.e. severe temperature, corrosive circumstances, space limitations)
Ways In Selecting An S-Flex Coupling
Stage one: Figure out the Nominal Torque in in-lb of the application by using the following formula:
Nominal Torque = (HP x 63025)/RPM
Stage 2: Using the Application Service Issue Chart 1 select the services factor which finest corresponds for your application.
Phase three: Calculate the Design and style Torque of one’s application by multiplying the Nominal Torque calculated in Phase 1 from the Application Services Component established in Phase two.
Style Torque = Nominal Torque x Application Services Element
Step four: Applying the Sleeve Overall performance Information Chart two select the sleeve material which finest corresponds to your application.
Stage five: Using the S-Flex Nominal Rated Torque Chart 3 
locate the ideal sleeve material column for that sleeve chosen in Phase 4.
Phase six: Scan down this column to your initial entry wherever the Torque Value in the column is greater than or equal towards the Style Torque calculated in Stage three.
Refer to the maximum RPM value in the coupling dimension to guarantee that the application needs are met. If the maximum RPM worth is significantly less than the application requirement, S-Flex couplings are usually not recommended for that application.
Note:
If Nominal Torque is less than 1/4 with the coupling’s nominalrated torque, misalignment capacities are diminished by 1/2. Once torque value is found, refer to your corresponding coupling size during the first column of your S-Flex Nominal Rated Torque Data Chart three .
Stage 7: Compare the application driver/driven shaft sizes to your optimum bore size out there around the coupling chosen. If coupling max bore is not large ample for that shaft diameter, choose the following greatest coupling which will accommodate the driver/driven shaft diameters.
Phase 8: Working with the Item Selection tables, discover the appropriate Keyway and Bore size demanded and locate the number.
