Knuth Numturn 420 SI Eco Cycle-controlled Lathes

SKU: 181068212149 Categories: , ,


Working Area

Workpiece length (max.) 39 in

Turning diameter over bed 17 in

Turning-Ø over support 9 in

Turning length (max.) 36 in


Travel X-axis 8.7 in

Travel Z-axis 36 in


Spindle speed 60 – 3,000 rpm

Spindle mount A2-6

Spindle bore 2 in

Spindle bore with draw tube 1.9 in

Rapid Feed

Rapid feed X-axis 157.48 in/min

Rapid feed Z-axis 314.96 in/min

Tool Head

Number of tool stations 1 positions


Positioning accuracy X-axis 0.00024 in

Positioning accuracy Z-axis 0.00031 in

Repeatability X-axis 0.0002 in

Repeatability Z-axis 0.00031 in


Tailstock taper MT 4

Tailstock quill diameter 2 in

Tailstock quill stroke 4 in

Drive Capacity

Motor rating main drive 10.1 Hp

Motor rating coolant pump 0.2 Hp

Motor rating X-axis 2 Hp

Motor rating Z-axis 2.01 Hp

Motor rating X- / Z-axis 1,5 Hp

Measures and Weights

Overall dimensions (length x width x height) 113x63x69 in

Weight 6,050 lbs

Additional information



Overall dimensions

113 x 63 x 69 in

Motor Rating

10.1 Hp


8.7 in


36 in

Rapid Feed Z-axis

314.96 in/min

Rapid Feed X-axis

157.48 in/min

Tailstock Quill Stroke

4 in

Tailstock Quill Diameter

2 in

Workpiece length (max.)

39 in

Tailstock taper MT


Spindle Bore

2 in

Spindle Mount


Spindle Speed

60 – 3000 rpm

Motor Rating Coolant Pump

0.2 Hp

Turning Diameter Over Bed

17 in

Number of Tool Stations

1 positions


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