Process
S-Flex Coupling Selection System
The choice process for identifying the proper S-Flex coupling needs using the charts shown to the following pages. You can find three elements for being picked, two flanges and a single sleeve.
Information and facts important ahead of 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 equipment description
Environmental problems (i.e. extreme temperature, corrosive situations, area limitations)
Methods In Deciding on An S-Flex Coupling
Phase 1: Establish the Nominal Torque in in-lb of one’s application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase two: Making use of the Application Support Factor Chart 1 decide on the support element which best corresponds to your application.
Step 3: Calculate the Design Torque of the application by multiplying the Nominal Torque calculated in Step one through the Application Support Factor determined in Step 2.
Layout Torque = Nominal Torque x Application Support Issue
Stage 4: Utilizing the Sleeve Efficiency Data Chart 2 choose the sleeve materials which best corresponds to your application.
Step five: Making use of the S-Flex Nominal Rated Torque Chart three find the suitable sleeve materials column for your sleeve selected in Step four.
Step 6: Scan down this column to the 1st entry in which the Torque Worth inside the column is better than or equal on the Design and style Torque calculated in Phase 3.
Refer for the greatest RPM worth with the coupling size to ensure the application necessities are met. In the event the highest RPM worth is less compared to the application requirement, S-Flex couplings will not be advisable to the application.
Note:
If Nominal Torque is much less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are reduced by 1/2. As soon as torque worth is located, refer to the corresponding coupling dimension while in the 1st column in the S-Flex Nominal Rated Torque Information Chart 3 .
Step seven: Examine the application driver/driven shaft sizes for the greatest bore size offered to the coupling picked. If coupling max bore just isn’t massive enough for the shaft diameter, pick the subsequent largest coupling that may accommodate the driver/driven shaft diameters.
Phase eight: Using the Item Choice tables, obtain the proper Keyway and Bore dimension necessary and find the amount.