S-Flex Coupling Choice System
The selection system for determining the appropriate S-Flex coupling needs using the charts shown within the following pages. You’ll find 3 parts to be selected, two flanges and 1 sleeve.
Data vital in advance of a coupling could be chosen:
HP and RPM of Driver or running torque
Shaft size of Driver and Driven tools and corresponding keyways
Application or products description
Environmental problems (i.e. extreme temperature, corrosive conditions, space limitations)
Steps In Selecting An S-Flex Coupling
Phase one: Determine the Nominal Torque in in-lb of one’s application through the use of the following formula:
Nominal Torque = (HP x 63025)/RPM
Phase 2: Using the Application Service Component Chart 1 select the services element which very best corresponds for your application.
Stage 3: Calculate the Style Torque of one’s application by multiplying the Nominal Torque calculated in Step 1 through the Application Support Element established in Phase 2.
Layout Torque = Nominal Torque x Application Services Component
Step 4: Using the Sleeve Performance Information Chart 2 choose the sleeve materials which greatest corresponds for your application.
Phase five: Applying the S-Flex Nominal Rated Torque Chart 3 locate the acceptable sleeve materials column for that sleeve selected in Phase four.
Phase 6: Scan down this column for the to start with entry where the Torque Worth inside the column is higher than or equal for the Style Torque calculated in Stage 3.
Refer to the maximum RPM worth from the coupling size to make sure that the application needs are met. When the greatest RPM value is significantly less compared to the application necessity, S-Flex couplings aren’t encouraged to the application.
If Nominal Torque is less than 1/4 on the coupling’s nominalrated torque, misalignment capacities are diminished by 1/2. When torque value is located, refer to your corresponding coupling size during the first column in the S-Flex Nominal Rated Torque Data Chart 3 .
Step 7: Assess the application driver/driven shaft sizes for the optimum bore size offered about the coupling selected. If coupling max bore just isn’t significant enough for that shaft diameter, select the next biggest coupling that should accommodate the driver/driven shaft diameters.
Phase 8: Making use of the Item Choice tables, come across the appropriate Keyway and Bore size demanded and locate the number.