Process
S-Flex Coupling Assortment Method
The choice system for figuring out the right S-Flex coupling involves applying the charts shown about the following pages. You’ll find three elements to be selected, two flanges and a single sleeve.
Info needed prior to a coupling could be picked:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven gear and corresponding keyways
Application or products description
Environmental ailments (i.e. extreme temperature, corrosive problems, space limitations)
Ways In Picking out An S-Flex Coupling
Step 1: Ascertain the Nominal Torque in in-lb of your application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Step two: Making use of the Application Support Factor Chart one select the service aspect which best corresponds for your application.
Phase three: Determine the Style and design Torque of one’s application by multiplying the Nominal Torque calculated in Stage one by the Application Services Element established in Phase two.
Layout Torque = Nominal Torque x Application Service Element
Stage 4: Working with the Sleeve Functionality Data Chart two decide on the sleeve material which best corresponds for your application.
Phase 5: Making use of the S-Flex Nominal Rated Torque Chart three locate the suitable sleeve materials column for your sleeve picked in Stage four.
Step six: Scan down this column to your initially entry where the Torque Worth within the column is better than or equal to the Style Torque calculated in Step 3.
Refer on the maximum RPM value from the coupling size to guarantee the application specifications are met. In the event the greatest RPM value is much less compared to the application requirement, S-Flex couplings are not proposed for that application.
Note:
If Nominal Torque is significantly less than 1/4 of the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. The moment torque worth is located, refer to your corresponding coupling dimension in the to start with column of your S-Flex Nominal Rated Torque Information Chart 3 .
Phase 7: Examine the application driver/driven shaft sizes to the greatest bore size available over the coupling selected. 
If coupling max bore just isn’t large ample for that shaft diameter, decide on the next biggest coupling that could accommodate the driver/driven shaft diameters.
Step eight: Utilizing the Item Variety tables, find the suitable Keyway and Bore size demanded and find the number.
