Kehren Ri 8-4 grindturn

KEHREN Ri 8-4 grindturn
Year: 2010

CNC control
Rotary table diameter: 800 mm
Grinding diameter: 1100 mm
Max grinding height: 1100 mm
Workpiece rotation diameter: 1100 mm
Max table load: 2000 kg
Machine weight: approx. 18 t
Machine dimensions: approx. 6 x 4 m
Vertical grinding center with CE compliance
3 grinding spindles and one turning tool holder
External and internal cylindrical grinding and hard turning in one clamping
SIEMENS Sinumerik 840D SL control
Spindle 1 (0° / -5°): Turning tool holder with CAPTO C6 interface
Spindle 2 (90°): Direct drive, external taper, TSEV 140 x 500
Grinding diameter: 140 mm
Grinding height: 650 mm
Plunge depth: 600 mm
Grinding wheel: 250 x 60 x 76 mm
Power: 20 kW
Speed: 1500–4500 rpm
Spindle 3 (180°): High-frequency spindle, direct drive, HSP 170-18000
Grinding diameter: 170 mm
Grinding height: 950 mm
Plunge depth: 150 mm
Tool holder: HSK-C 63
Power: 20 kW
Speed: 3000–18000 rpm
Spindle 4 (270° / +5°): Belt drive, external taper, TSAV 1200 x 400
Grinding diameter: 120 mm
Grinding height: 1100 mm
Grinding wheel: 400 x 60 x 127 mm
Power: 15 kW
Speed: 1500–4500 rpm
Turret head (B-axis) with 360 teeth and hydraulic tension
B-axis swivel range: 280°
B-axis minimum increment: 1°
Z-axis feed: 0.01–6000 mm/min
Z-axis rapid traverse: 10 m/min
X-axis feed: 0.01–6000 mm/min
X-axis rapid traverse: 20 m/min
C-axis rotary table direct drive
Rotary table speed: 0.01–200 rpm
Setup speed: 1–10 rpm adjustable
Automatic gravity belt filter system
Coolant tank volume: 1000 l
Flow rate: 200 l/min
Immersion cooling unit: 5000 kcal/h cooling capacity
Mist extraction unit: 1200 m³/h capacity
Dressing spindle for vertical ceramic grinding wheels
RENISHAW swivel measuring system for bores and surfaces
Calibrating console with T-slots
Semi-automatic balancing electronics with vibration and speed sensor
Additional grinding wheel holders for spindles 2, 3, and 4