This is the info from the description:
"Closed Loop w/ Encoder Feedback"
Here's the complete specifications from the ad:
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Big Travels X - 30", Y - 15", Z - 5"
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60-4200 Rpm VariSpeed, 2HP (1.5Kw)
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X & Y Axis Rigid Boxed Way Design
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Universal QS200 or Erickson #30 Spindle
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250 IPM Max Rapid Traverse
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.1- 100 IPM Cutting Feed Rate
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10-120% Feed Rate Override w/ Hold
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Continuous Jog Rate 150 IPM all Axes
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Increment Step & Jog Handwheel Modes
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G-Code Programming w/ Canned Cycles
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Both Mist & Flood Coolant Outputs
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RS232 Serial Port w/ DNC Software
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12Kb Battery Backed Program Memory
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2 x 16 LCD Display
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Powerful 40 lb/in DC Servo Motors
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Closed Loop w/ Encoder Feedback
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Servo/Input Resolution .0001"
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Positioning Accuracy - .0008" / Repeatability .0003"
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Bijur Auto Central Lube System
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Air Requirements 4 CFM @ 100 PSI
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Power 208-230v (3Phase Only) / 30Amp Service
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Air Assisted Manual Knee & Special Dual Knee Locks
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Table Workpiece Capacity 1000 lbs.
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Floor Area 92" x 97"
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Height 89"
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Shipping Weight 5000 lbs.
Now, I am very new to this and only have a little bit of CNC experience on some 3 axis BP's at school. I have been leaning towards something like the Tormach mill but I have run across some knee mills which are selling for decent prices. My concerns are the age of the machine (more for the controls than the mechanicals) and whether or not it is worth it. If it is a true closed loop system (which I am skeptical about given the age) it may be worth it, but again I think my ignorance makes it difficult to make an informed decision.  |