S-Flex Coupling Choice Process
The selection approach for identifying the right S-Flex coupling requires using the charts shown on the following pages. There are 3 parts to be chosen, two flanges and one particular sleeve.
Information and facts essential before a coupling can be picked:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven tools and corresponding keyways
Application or tools description
Environmental circumstances (i.e. excessive temperature, corrosive situations, space limitations)
Ways In Choosing An S-Flex Coupling
Stage 1: Determine the Nominal Torque in in-lb of the application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Stage two: Working with the Application Services Issue Chart 1 decide on the service aspect which best corresponds to your application.
Phase 3: Calculate the Layout Torque of one’s application by multiplying the Nominal Torque calculated in Stage one from the Application Support Factor determined in Stage two.
Style and design Torque = Nominal Torque x Application Service Component
Stage four: Making use of the Sleeve Efficiency Information Chart 2 decide on the sleeve material which greatest corresponds to your application.
Stage 5: Using the S-Flex Nominal Rated Torque Chart 3 locate the acceptable sleeve material column for that sleeve selected in Stage 4.
Step six: Scan down this column towards the to start with entry in which the Torque Value within the column is better than or equal for the Style Torque calculated in Stage three.
Refer for the optimum RPM value of your coupling size to guarantee that the application needs are met. If the optimum RPM value is less compared to the application requirement, S-Flex couplings usually are not suggested to the application.
If Nominal Torque is much less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are decreased by 1/2. The moment torque value is found, refer to the corresponding coupling size while in the to start with column of your S-Flex Nominal Rated Torque Data Chart 3 .
Step seven: Compare the application driver/driven shaft sizes for the greatest bore size available over the coupling chosen. If coupling max bore will not be substantial adequate for that shaft diameter, choose the following biggest coupling that will accommodate the driver/driven shaft diameters.
Step 8: Employing the Item Variety tables, come across the proper Keyway and Bore size necessary and locate the variety.