Process
S-Flex Coupling Choice Method
The assortment system for determining the right S-Flex coupling requires working with the charts shown about the following pages. You will discover three components to be picked, two flanges and a single sleeve.
Data needed ahead of a coupling could be selected:
HP and RPM of Driver or operating torque
Shaft dimension of Driver and Driven gear and corresponding keyways
Application or equipment description
Environmental problems (i.e. severe temperature, corrosive problems, area limitations)
Ways In Picking An S-Flex Coupling
Step one: Ascertain 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: Working with the Application Service Issue Chart one choose the service issue which best corresponds to your application.
Stage 3: Determine the Style Torque of one’s application by multiplying the Nominal Torque calculated in Phase one from the Application Services Component established in Step two.
Design Torque = Nominal Torque x Application Service Factor
Stage 4: Working with the Sleeve Performance Data Chart 2 pick the sleeve material which best corresponds to your application.
Phase 5: Making use of the S-Flex Nominal Rated Torque Chart 3 locate the acceptable sleeve materials column for that sleeve picked in Step four.
Stage six: Scan down this column towards the 1st entry in which the Torque Worth during the column is better than or equal to your Style Torque calculated in Stage 3.
Refer to the greatest RPM worth from the coupling dimension to guarantee that the application specifications are met. If your greatest RPM worth is much less than the application requirement, S-Flex couplings usually are not proposed to the application.
Note:
If Nominal Torque is significantly less than 1/4 on the coupling’s nominalrated torque, misalignment capacities are lowered by 1/2. As soon as torque worth is found, refer to your corresponding coupling size in the 1st column of your S-Flex Nominal Rated Torque Data Chart 3 .
Step 7: Assess the application driver/driven shaft sizes to the optimum bore size obtainable over the coupling picked. If coupling max bore just isn’t huge enough for your shaft diameter, pick the following biggest coupling that will accommodate the driver/driven shaft diameters.
Step 8: Utilizing the Item Choice tables, come across the ideal Keyway and Bore size essential and find the variety.