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Mechanical Engineering


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  1. Hey everyone, I'm having trouble calculating required shaft diameter for a design. Said design is a Centrifugal separator. I'm hoping someone can help me out with figuring out what diameter shaft will be necessary for this design. Shaft material: 304 SS (for sanitary reasons.. but can be changed to another SS material if need be) RPM: 1800 Rotor weight: 70 Lbs Rotor height: 22" Rotor OD: 18" Medium inside of Rotor: 30 Lbs Max Notes: Rotor and shaft are run in a vertical fashion. shaft will be subjected to a -50C to +25C temperature during normal operation depending on the process requirements. Rotor is balanced to G6.3 We can assume that the medium inside the rotor may exhibit some off set loading anywhere from 1-2 Lbs Shaft dimensions are attached as well as the rotor assembly. Center of mass for the rotor is on axis, 7.5 inches from the bottom of the rotor.(side closest to the shaft) Ramp up/acceleration speed is very gradual. so torsion on shaft is negligible Hopefully all the info is here. If not, I can provide more if required. Thank you in advance! Regards, D SPIN BASKET-FLANGE-SHAFT ASSEMBLY BE BALANCING ASSEMBLY.PDF
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