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Jaw Type Coupling Choice Approach
The variety approach for determining the correct jaw coupling size and elastomer demands making use of the charts proven over the following pages. There are 3 parts to get selected, two hubs and 1 elastomer. When the shaft size on the driver and driven of your application are with the identical diameter, the hubs selected will probably be the identical. When shaft diameters differ, hubs selected will differ accordingly.
Details necessary prior to a coupling is usually picked:
HP (or KW) and RPM or Torque of driver
Shaft sizes of driver and driven gear and corresponding keyways
Application description
Environmental problems (i.e. excessive temperature, corrosive circumstances, room limitations)
Actions In Deciding on A Jaw Coupling
Step one: Determine the Nominal Torque of your application by using the next formula:
Nominal Torque = in-lb = (HP x 63025)/RPM
Nm = (KW x 9550)/RPM
Step two: Making use of the Application Services Components Chart one decide on the service element which ideal corresponds for your application.
Phase 3: Calculate the Layout Torque of the application by multiplying the Nominal Torque calculated in Stage one through the Application Service Component determined in Stage 2.
Style Torque = Nominal Torque x Application Services Factor
Step 4: Working with the Spider Overall performance Data Chart 2, pick the elastomer material which greatest corresponds to your application.
Phase 5: Applying the Jaw Nominal Rated Torque Chart three , locate the suitable elastomer materials column for your elastomer selected in Stage four.
Scan down this column for the very first entry where the Torque Value from the ideal column is greater than or equal on the Design Torque calculated in Stage 3.
When this worth is located, refer towards the corresponding coupling size while in the 1st column of your Jaw Nominal Rated Torque Chart three .
Refer to your greatest RPM worth for this elastomer torque capability to ensure that the application needs are met. Should the necessity is not pleased at this point, a different type of coupling can be expected for the application. Please seek the advice of Lovejoy engineering for assistance.
Phase six: Assess the application driver/driven shaft sizes on the highest bore size accessible within the coupling selected. If coupling bore dimension isn’t massive adequate to the shaft diameter, pick the next biggest coupling which will accommodate the driver/driven shaft diameters.
Phase seven: Employing the UPC variety assortment table , uncover the ideal Bore and Keyway sizes required and find the amount.