S-Flex Coupling Choice Procedure
The selection system for determining the proper S-Flex coupling necessitates utilizing the charts shown on the following pages. There are 3 elements to be chosen, two flanges and a single sleeve.
Information and facts needed in advance of a coupling is often picked:
HP and RPM of Driver or running torque
Shaft size of Driver and Driven equipment and corresponding keyways
Application or products description
Environmental circumstances (i.e. extreme temperature, corrosive problems, space limitations)
Methods In Deciding on An S-Flex Coupling
Stage one: Identify the Nominal Torque in in-lb of your application by utilizing the following formula:
Nominal Torque = (HP x 63025)/RPM
Stage two: Applying the Application Support Aspect Chart one select the services component which finest corresponds for your application.
Step 3: Calculate the Style Torque of one’s application by multiplying the Nominal Torque calculated in Step one by the Application Services Component established in Step 2.
Style Torque = Nominal Torque x Application Service Issue
Phase four: Making use of the Sleeve Performance Data Chart two select the sleeve material which greatest corresponds for your application.
Step 5: Using the S-Flex Nominal Rated Torque Chart three locate the acceptable sleeve materials column for your sleeve picked in Step 4.
Step six: Scan down this column to the initial entry exactly where the Torque Worth inside the column is better than or equal towards the Style and design Torque calculated in Phase three.
Refer to your maximum RPM value of your coupling dimension to be sure that the application requirements are met. If your greatest RPM value is significantly less compared to the application requirement, S-Flex couplings are certainly not advised to the application.
If Nominal Torque is much less than 1/4 on the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. Once torque value is located, refer to your corresponding coupling size within the 1st column on the S-Flex Nominal Rated Torque Information Chart 3 .
Phase 7: Compare the application driver/driven shaft sizes to your optimum bore dimension out there within the coupling chosen. If coupling max bore will not be substantial sufficient to the shaft diameter, select the next greatest coupling that should accommodate the driver/driven shaft diameters.
Step eight: Using the Item Variety tables, find the proper Keyway and Bore dimension necessary and find the amount.