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February 22, 2021

Course of action
S-Flex Coupling Selection Procedure
The variety method for figuring out the proper S-Flex coupling involves utilizing the charts proven to the following pages. You’ll find three elements to become selected, two flanges and a single sleeve.
Facts required just before a coupling may be selected:
HP and RPM of Driver or working torque
Shaft dimension of Driver and Driven equipment and corresponding keyways
Application or tools description
Environmental conditions (i.e. severe temperature, corrosive conditions, area limitations)
Methods In Picking An S-Flex Coupling
Stage 1: Establish the Nominal Torque in in-lb of one’s application by using the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase two: Using the Application Support Factor Chart 1 pick the support component which best corresponds for your application.
Step three: Calculate the Layout Torque of the application by multiplying the Nominal Torque calculated in Step 1 by the Application Support Issue established in Stage two.
Design and style Torque = Nominal Torque x Application Service Element
Step four: Utilizing the Sleeve Efficiency Information Chart two pick the sleeve material which ideal corresponds to your application.
Phase five: Employing the S-Flex Nominal Rated Torque Chart three find the acceptable sleeve materials column for the sleeve picked in Phase 4.
Step six: Scan down this column to the very first entry the place the Torque Value from the column is higher than or equal for the Style and design Torque calculated in Phase three.
Refer for the greatest RPM worth from the coupling dimension to make sure that the application specifications are met. In the event the highest RPM worth is less than the application requirement, S-Flex couplings will not be advisable for the application.
Note:
If Nominal Torque is much less than 1/4 with the coupling’s nominalrated torque, misalignment capacities are reduced by 1/2. When torque value is located, refer to your corresponding coupling dimension during the to start with column of the S-Flex Nominal Rated Torque Information Chart three .
Phase 7: Assess the application driver/driven shaft sizes for the greatest bore dimension available over the coupling chosen. If coupling max bore is just not huge enough for that shaft diameter, decide on the next greatest coupling that should accommodate the driver/driven shaft diameters.
Step 8: Working with the Item Selection tables, come across the proper Keyway and Bore size necessary and locate the number.