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In this case, the rotary axis will be turning relatively slowly, so the motor can be geared down dramatically, maybe in the range of 90:1 or so. But this is going to require a rather expensive zero backlash gearbox to maintain accuracy. As the motor is geared down, the torque requirement of the motor itself will be reduced by a factor of the gear ratio.
Yes, I was looking at some Panasonic parts a while ago but was not sure if that is all I need and the price was a bit expensive for prototype. Here is what I sent to the dealer last year to ask if I need more parts such as power supply, cables... to complete my prototype but didn't get any help. Parts are from Digikey.