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Karstens K11 650

Karstens K11 650
The cylindrical grinding machine has been completely overhauled by PS-Karstens.
The machine has been tested and is in very good condition.
As specialists in Karstens cylindrical grinding machines, we can provide you with complete service (electrical and mechanical) for the machine after purchase.

Technical Data:
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Centre distance: 650 mm
Centre height: 180 mm
Workpiece weight: 100 kg (between centers), 250 kg (supported)
Grinding wheel diameter: 400 mm
Workpiece spindle: Morse taper 4, infinitely variable speed 30–450 rpm, swiveling range 0–90°
Tailstock: MT4, quill stroke 45 mm, micrometer adjustment
Quill force: 200–600 N, hydraulically operated via foot pedal
Table swiveling: 10 degrees
Feed spindle adjustment range: 80 mm
Rapid traverse: 50 mm
Rough adjustment with air cushion: 280 mm
External grinding spindle motor: 4 kW
Internal grinding spindle motor: 2.2 kW
Workpiece spindle motor: 0.55 kW
Machine weight: net 3,800 kg
Feed drive by DC motor
Air-cushion-assisted rapid adjustment of the grinding spindle stock for fast and precise positioning of the grinding position.
Separate drives for external and internal grinding spindles.
Fully automatic operating sequence, feed movement controlled via cam switch:
Rapid approach, rapid return, grinding mode, feed stop, micron feed.
Automatic longitudinal grinding cycle
Central coolant supply for all grinding positions
Workpiece spindle head with infinitely variable drive for live and locked spindle operation.
Feed control for both plunge and traverse grinding, input for retraction, feed amount, feed rates, dwell times, and idle strokes
Paper band filter system approx. 250 L
Comparable to Weiss/EMAG/GP cylindrical grinding machines/Studer/Kellenberger/Schaudt/Tschudin/Tacchella/Dannobat /Bahmüller/Fortuna

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