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Process
S-Flex Coupling Assortment Procedure
The selection system for determining the correct S-Flex coupling requires using the charts proven to the following pages. You will find three parts to be chosen, two flanges and one sleeve.
Facts necessary prior to a coupling can be picked:
HP and RPM of Driver or working torque
Shaft size of Driver and Driven equipment and corresponding keyways
Application or tools description
Environmental circumstances (i.e. intense temperature, corrosive problems, area limitations)
Techniques In Selecting An S-Flex Coupling
Step one: Establish the Nominal Torque in in-lb of the application by using the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase 2: Working with the Application Service Element Chart one decide on the support aspect which very best corresponds to your application.
Step 3: Calculate the Style and design Torque of your application by multiplying the Nominal Torque calculated in Stage 1 through the Application Service Aspect determined in Step two.
Design Torque = Nominal Torque x Application Support Element
Stage 4: Employing the Sleeve Overall performance Data Chart 2 pick the sleeve material which greatest corresponds to your application.
Phase 5: Working with the S-Flex Nominal Rated Torque Chart 3 locate the ideal sleeve material column for the sleeve selected in Stage 4.
Step 6: Scan down this column for the very first entry wherever the Torque Value from the column is better than or equal to your Design Torque calculated in Step 3.
Refer to your greatest RPM value from the coupling size to be sure that the application needs are met. If your maximum RPM value is significantly less than the application necessity, S-Flex couplings will not be advisable to the application.
Note:
If Nominal Torque is much less than 1/4 from the coupling’s nominalrated torque, misalignment capacities are decreased by 1/2. The moment torque value is located, refer for the corresponding coupling dimension while in the very first column of your S-Flex Nominal Rated Torque Data Chart 3 .
Phase 7: Examine the application driver/driven shaft sizes to your optimum bore dimension readily available over the coupling chosen. If coupling max bore is just not huge enough to the shaft diameter, select the next biggest coupling which will accommodate the driver/driven shaft diameters.
Stage 8: Making use of the Item Assortment tables, locate the acceptable Keyway and Bore dimension demanded and find the number.