Table surface guaranty(Testing grinding piece*6, thickness difference) : 2μ
Downfeed(minimum unit) : 1μ
■ Spindle & motor
Vertical driven by AC servo motor.
3HP V3 grade low virbration spindle motor
Direct drive spindle, ABEC Class 7 (P4) bearings, 0.003m/m TIR.
1 roller bearing and 2 angular contact ball bearings at front, 2 angular contact ball bearings at rear side of spindle. (YRG-03)
2 angular contact ball bearings at front, 2 angular contact ball bearings at rear side of spindle. (YRG-04)
■ Cross and Rotary table
Z axis and rotary table are driven by servo motor.
Rotary table wtih constant peripheral velocity.
■ Base & slide ways
Z axis double V and longitudinal V& flat, and TURCITE B coated with hand scraped, 3 axes are solid slide ways.
One-piece casting base and slide way.
All main casting are made of "Meehanite GC275" and have been annealed stress for long lasting and accuracy.