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- Jun 12, 2014
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I have the same mill (manual), it is made by First Industries of Taiwan, and both Sharp and Acra put their name plates on them. Great mill and looks in very good condition, and a lot of mill for the price. Limitations of ball screws is that when used in a manual mode, they do not stay in position so one needs to be very careful when doing climb cutting. I am not sure of when using the servos under power feed with the pendent if they lock when they stop. I did use a Large Lagun mill with a similar CNC system and ball screws, it was extremely smooth and easy to use. A big step up from a bench mill. Major limitation is moving the mill, ideally if you can rend a drop deck trailer it makes it much easier to get onto the trailer.
The head is a mechanical Reeves drive so make sure it is quiet through the speed range, should be a 3 phase machine so you will need a RPC or possibly drive the motor with a VFD at 60 Hz, use the mechanical drive to adjust the speed.
The head is a mechanical Reeves drive so make sure it is quiet through the speed range, should be a 3 phase machine so you will need a RPC or possibly drive the motor with a VFD at 60 Hz, use the mechanical drive to adjust the speed.