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Hyd. motor and coupler fastening
I'm mounting a large coupler to a hyd. motor that has a splined shaft. I had set screws machined into the coupler normal to the splines it covers to secure it. But now the manager wants to add a 1/4" keeper plate utilizing the two tapped holes on the end of the shaft to force the splines to ride up and wedge where the splines taper out on the shaft.
See attached pictures
The assembly is subject to 300 rpm max 165 hp max 10500 ft-lb torque.
Is this good practice?