Knuth Numturn 420 SI CNC Cycle Lathe

User-oriented and fully equipped

Knuth Numturn 420 SI CNC Cycle Lathe

  • manually transverse the X and Z axes via 2 electronic hand wheels
  • user-oriented cycle interface for easy parts programming - turning cycles with many programming options to create a complete parts program
  • induction-hardened, ground guideways
  • hydraulic 200 mm chuck with adjustable holding force included in standard equipment
  • servo-drive for a powerful main spindle drive
  • smart central lubrication system for low-maintenance operation
  • longitudinal and transverse movements via preloaded ball screws
  • standard 8-station tool turret

Specifications - Knuth Numturn 420 SI CNC Cycle Lathe:

 

 

Working area

Workpiece length (max.)

Turning diameter over bed

Turning diameter over support

Travel X-axis

Travel Z-axis

Turning length (max.)

 

 

750 mm

420 mm

230 mm

220 mm

750 mm

500 mm

 

Headstock

Spindle speed

Spindle mount

Spindle bore

Hydr. jaw chuck Ø

Spindle bore

 

3.000 rpm

A2-6

52 mm

200 mm

35 mm

Feed

Rapid feed X-axis

Rapid feed Z-axis

 

 

4.000 mm/min

8.000 mm/min

 

Tool head

Number of tool stations

 

8 Pieces

Tailstock

Tailstock taper

Tailstock quill diameter

Tailstock quill stroke

 

MT 4

52 mm

100 mm

Accuracies

Positioning accuracy X-axis

Positioning accuracy Z-axis

Repeatability X-axis

Repeatability Z-axis

 

 

0,015 mm

0,02 mm

0,015 mm

0,02 mm

 

Drive capacity

Motor rating main drive

Motor rating X-axis

Motor rating Z

Motor rating coolant pump

 

 

7,5 kW

1,5 kW

1,5 kW

0,125 kW

 

Measures and weights

Overall dimensions

Weight

 

 

2.300x1.450x1.850 mm

2.000 kg

 

Control:

Siemens Sinumerik 808 D Manual Machine Plus

User-friendly solution for turning and milling applications with a small footprint

Precision and Productivity

  • Calculations are performed with 80-Bit NanoFP accuracy without any internal rounding errors
  • The 808D comes with the intelligent MDynamics motion control, including smart "Look-Ahead" function for optimized speed guidance - allowing increased productivity and perfect surface quality
  • The 808 series features powerful computing capacity and advanced technology cycles for superior performance
  • self-explanatory, yet powerful CNC functions ensure highest precision at the workpiece and short machining times
  • "programGuide Basic" for easy programming via graphical cycle masks, plus a practical contour calculator
  • Allows re-using of part programs from other controls that support ISO code
  • DIN and ISO programming code can be alternated within one program
  • Manual Machine plus (MM+) allows control via hand-wheels like a conventional machine, however, with the added benefit of CNC-supported technology cycles
  • The menu structure of the completely updated Sinumerik Operate Basic has been closely adapted to the larger Sinumerik Operate system's menu
  • The interface at the front panel provides a connector for USB memory sticks for easy transfer of parts programs and tool data during everyday operation
  • The user interface allows online change between languages
  • This series features ergonomically designed rotary override switches
  • Microswitch keys of the membrane keyboard ensure excellent tactility
  • The Sinumerik 808D Software package on PC simplifies handling and complements the CNC control. It can be used as practical training software to program and simulate workpieces offline. This software is included in the standard equipment and can also be used for presentation purposes.

Typical Applications

Perfectly pre-configured for:

  • Lathes with up to 3 axes / 1 spindle with one machining channel
  • System software for inclined bed and box-way CNC machines
  • Box-way lathe with hand-wheel control (Manual Machine plus)

Benefits

SINUMERIK Operate BASIC

  • Easy, intuitive user interface guides and supports the user via dialogs

SINUMERIK program GUIDE BASIC

  • Comprehensive bandwidth of technology cycles for turning and drilling with graphical input masks
  • High Performance and precision are ensured by advanced CNC functions

Machine Control Panel

  • This series features ergonomically designed rotary override switches just like high-end CNC machines

Standard equipment:

Siemens 808 D MM Plus control, 2 electronic hand-wheels, hydr. 3-jaw chuck Ø 200 mm, 8-station turret, automatic central lubrication, work lamp, operating tools, operating manual and programming instructions

 

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