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SSD means solid state drive. is it??

@Artisi thanks for help

@GregLocock thanks sir for useful information. regards, aftab

@artisi i had that in my mind but here i don't have equipment to check balancing. is there any other method to check balancing. aftab

so far about eccentricity of disk,i have to go for CMM test. thanks. aftab

thanks Keith for useful information, the motor is DC motor and for this application i need to vary the speed. By varying the speed, the resonance seems to appear at 600-700 rpm.After sweeping these speed range motor runs smoothly. as the speed reaches near 2700 rpm, vibrations are too much but...

Hello, I have a problem as shown in attachment,here a vertical shaft is powered by a motor. at the top of the shaft a circular disk is fixed weigh approximately 3 kg. the shaft runs at 3000rpm and motor power is 0.75 hp. Iam intrested to know the critical speeds within the working rpm range.(...

Hello, I have a problem as shown in attachment,here a vertical shaft is powered by a motor. at the top of the shaft a circular disk is fixed weigh approximately 3 kg. the shaft runs at 3000rpm and motor power is 0.75 hp. Iam intrested to know the critical speeds within the working rpm range.(...