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February 22, 2021

Approach
S-Flex Coupling Selection Procedure
The variety procedure for determining the right S-Flex coupling involves using the charts shown on the following pages. There are actually three parts to get chosen, two flanges and one sleeve.
Details necessary before a coupling might be selected:
HP and RPM of Driver or operating torque
Shaft size of Driver and Driven tools and corresponding keyways
Application or tools description
Environmental disorders (i.e. intense temperature, corrosive disorders, room limitations)
Methods In Picking out An S-Flex Coupling
Step 1: Identify the Nominal Torque in in-lb of the application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step 2: Working with the Application Support Element Chart one decide on the service component which greatest corresponds for your application.
Phase three: Determine the Design Torque of your application by multiplying the Nominal Torque calculated in Stage 1 by the Application Service Element established in Phase two.
Design Torque = Nominal Torque x Application Service Factor
Phase four: Employing the Sleeve Effectiveness Information Chart two decide on the sleeve materials which greatest corresponds for your application.
Step 5: Working with the S-Flex Nominal Rated Torque Chart three locate the acceptable sleeve material column to the sleeve selected in Stage four.
Stage six: Scan down this column for the to start with entry the place the Torque Value from the column is better than or equal to the Style and design Torque calculated in Step three.
Refer to your greatest RPM worth from the coupling dimension to make certain that the application requirements are met. If your greatest RPM value is much less than the application necessity, S-Flex couplings are certainly not encouraged to the application.
Note:
If Nominal Torque is significantly less than 1/4 in the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. After torque value is found, refer for the corresponding coupling dimension from the initially column on the S-Flex Nominal Rated Torque Data Chart three .
Step 7: Review the application driver/driven shaft sizes on the maximum bore dimension offered over the coupling selected. If coupling max bore will not be substantial adequate to the shaft diameter, select the next biggest coupling that will accommodate the driver/driven shaft diameters.
Stage eight: Making use of the Item Assortment tables, find the acceptable Keyway and Bore dimension essential and find the variety.