2006 Kehren Ri 12-4

Machine Data

• Machine Type: CNC Vertical Grinding Center / Internal and Face Grinding Machine
• Control Unit: Siemens 840 D
• Year of Manufacture: 2006

Working Area & Table

• Rotary Table Diameter: 1,200 mm
• Swing Diameter: 1,500 mm
• Grinding Diameter (Internal): up to approx. 1,450 mm
• Grinding Height (max.): approx. 1,050 mm – 1,200 mm (depending on configuration/spindle)
• Table Load (Workpiece Weight): 3,000 kg (some reinforced versions up to 5,000 kg)
• Table Speed: Variable (typically approx. 1 – 100 rpm for grinding; slower for setup mode)

Travels & Axes

• X-Axis (Cross Slide): approx. 1,900 mm
• Z-Axis (Vertical Stroke): 1,200 mm
• B-Axis (Turret Swivel Range): 280°
• Feed Rate (Z): 0.01 – 10,000 mm/min
• Feed Rate (X): 0.01 – 15,000 mm/min

Spindle System (4-Station Turret)

The machine is typically equipped with a turret head capable of holding up to 4 different spindles to perform internal, external, and face grinding tasks in a single clamping.

• Number of Spindles: 4
• Main Spindle :
• Power: approx. 25 kW
• Speed: 2,000 – 12,000 rpm
• Holder/Taper: HSK-C80
• Auxiliary Spindles (for smaller bores/finishing):
• Power: approx. 15 kW
• Speed: 1,500 – 4,500 rpm (or high-frequency up to 24,000 rpm depending on option)

Dimensions & Power Supply

• Total Weight: approx. 25,000 kg (25 tons)
• Space Requirement (L x W x H): approx. 8.6 m x 5.5 m x 5.5 m
• Total Power Requirement: approx. 60 – 80 kVA