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JUNG D 221

A well-maintained internal cylindrical grinding machine, manufactured by JUNG, type 221, with a surface grinding attachment. The largest bore that can be ground economically is 150 mm.
Grinding length without surface grinding: 250 mm.
Grinding length with surface grinding, depending on the chuck length: ≤ 250 mm.
Largest swing diameter inside the guard: 350 mm.
Height of the spindle center above the table: 245 mm.
Workpiece spindle bore: 44 mm.
Workpiece spindle hollow taper: metric 50.
Workpiece spindle speeds: 58 - 85 - 120 - 170 - 246 - 348 rpm.
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Table speed in rapid traverse (infinitely adjustable): 10 m/min.
Table speed during grinding (infinitely adjustable): 0 - 8 m/min.
Power requirement: 11 kW.
Power requirement for the machine with surface grinding attachment: 12.5 kW.
Net weight: approx. 3500 kg.

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