Re: [CAD_CAM_EDM_DRO] Bridgeport servo motors

Polaraligned wrote:

>Torque constant: 44oz-in/amp
>Voltage constant: 32.5v/1000 rmp
>Peak torque: 600 oz-in, or 37.5 in-lb
>
>

44 oz-in/amp * 20 A = 880 Oz-In, or 2640 Oz-in after the 3:1 belt
reduction. That is 165 In-Lb of torque at the screw. Assuming a 5 TPI
ballscrew, this will exert 5189 Lbs of linear force on the table. Assuming
a total weight of table, vise and workpiece of 1000 Lbs, it can accelerate
it at 5 G!

If you ever have a serious crash with this system, be prepared to dodge
a flying J-head!

You are going to need a very heavy duty belt to resist this force. It
is about
7 times more force than on my Bridgeport retrofit.

Jon