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KMT LIDKÖPPING VGG 4000

Machining diameter: 4,200 mm
Machining height: 550 mm

Diameter of magnetic chuck: 4,000 mm
Max. rotational speed of rotary table: 13 min-1

Control system: SIEMENS SINUMERIK 840D PL

► RIGHT GRINDING HEAD
Swiveling range, external: 50°
Swiveling range, internal: 47°
Max. grinding wheel diameter: 610 mm
Max. grinding wheel height: 255 mm
Max. workpiece height: 550 mm
Travel - X: 2,820 mm
Travel - Z: 820 mm
Rapid traverse X + Z axes: 10,000 mm/min

► LEFT GRINDING HEAD
Max. grinding wheel diameter: 610 mm
Max. grinding wheel height: 255 mm
Max. workpiece height: 540 mm
Travel - U: 2,870 mm
Travel - W: 790 mm
Rapid traverse U + W axes: 10,000 mm/min

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► GRINDING WHEEL MAGAZINE
Right magazine: quantity: 5
Left magazine, quantity: 4

► DIMENSIONS AND WEIGHTS
Operating platform height: approx. 2,605 mm
Machine weight: approx. 143,000 kg
Machine dimensions (L x W x H): approx. 13,400 x 8,945 x 4,250 mm

► ACCESSORIES
- Automatic grinding wheel changer, left side (4 wheels) & right side (5 wheels)
- Automatic dressing unit for both grinding heads, MARPOSS P7
- Various grinding wheels and arbors
- Oil mist emulsion extraction system
- Automatic balancing device
- Hydrostatic guide in all machining axes

► DESCRIPTION
The machine is in exceptionally good condition and was used exclusively for the highly precise final machining of large bearings for offshore wind turbines. The machining operations included grinding the inner and outer diameters as well as the highly precise raceways of the roller bearings.
The machining results achieved demonstrate the machine's exceptional performance. Inner and outer diameters with a workpiece diameter of up to 4,000 mm were ground within a tolerance of ±20 µm. A profile accuracy of 2–3 µm was achieved for the raceways.

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