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KEHREN Ri 8-4

CNC grinding machine
Type/Model: Ri 8-4
Year of manufacture: 2009
Operating hours: 25,726 h
Technical data
Rotary table diameter: 800 mm
Max. grinding/turning diameter: approx. 1,000 mm
Max. grinding/workpiece height: approx. 700 mm to 800 mm
Max. table continuous load: 2,000 kg
Rotary table (C-axis) & guide
Bearing: Hydrostatic guides in the X and C axes for maximum damping and wear-free operation
Table drive: Direct drive
Speed range: 0.01 to 200 rpm
Positional accuracy: ± 1.5 arc seconds
(smallest increment: 0.0001°)
Tool holder & spindle (turret head)
Number of spindle positions: up to 4 grinding spindles/tool positions in the automatically swiveling turret head
CNC control & axis drives
Standard control: Siemens Sinumerik 840D with extended KERN grinding application software
X-axis: Linear drive
Travel distances (approximate values)
X-axis (horizontal): approx. 1,200 mm
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Z-axis (vertical): approx. 700 mm
Dimensions & weight
Machine weight: approx. 18,000 kg + peripherals

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