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CNC lathe Roturn 402 C
horizontal2-axisinclined bed

CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 2
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 3
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 4
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 5
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 6
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 7
CNC lathe - Roturn 402 C - Knuth Machine Tools - horizontal / 2-axis / inclined bed - image - 8
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Characteristics

Control type
CNC
Spindle orientation
horizontal
Number of axes
2-axis
Structure
inclined bed
Spindle mount
A2-8
Number of tool stations
8 tools
Applications
for production
Performance
powerful
Other characteristics
compact
Diameter

400 mm
(15.75 in)

Spindle speed

Max.: 2,000 rpm
(12,566.371 rad.min-1)

Min.: 50 rpm
(314.159 rad.min-1)

Maximum part length

420 mm
(17 in)

Axe X

200 mm
(8 in)

Axe Z

425 mm
(17 in)

Rapids on X

20,000 mm/min
(13 in/s)

Rapids on Z

25,000 mm/min
(16 in/s)

Nominal power

11 kW, 15 kW
(15 hp, 20.4 hp)

Overall lenght

3,800 mm
(150 in)

Overall width

1,870 mm
(74 in)

Overall height

1,910 mm
(75 in)

Weight

3,400 kg
(7,496 lb)

Description

Product summary
This machine of the ROTURN C series is a compact CNC production lathe engineered for series turning operations. Fitted with Siemens SINUMERIK 828 D Basic control, an inclined bed, an 8-station turret and a 15 kW main spindle, it includes a hydraulic 3-jaw chuck with through-hole, a hydraulic tailstock quill with long stroke, a hinged chip conveyor and a high-performance coolant system.

Highlights
  • Siemens SINUMERIK 828 D Basic control
  • 15 kW main spindle motor
  • 8-station tool turret
  • Hydraulic 3-jaw chuck with through-hole (Ø250 mm)
  • Integrated chip conveyor and high-performance coolant system


Machine design
  • Inclined-bed heavy frame for high rigidity and effective chip evacuation
  • Precision linear guides on X and Z axes for repeatable accuracy under load
  • Enclosed working area with large sliding door for safe and easy access
  • Automatic central lubrication for guideways


Spindle
  • Maximum spindle speed: 2,000 rpm (Roturn 402 C); alternative Roturn 400C up to 3,000 rpm
  • Main motor power: 15 / 11 kW
  • Spindle mount: A2-8
  • Spindle bore: 86 mm (74 mm with draw tube)


Tool changer
  • 8-station turret for quick, precise tool changes
  • Boring bar holder diameter: Ø40 mm


Tailstock & auxiliaries
  • Tailstock taper: MT5
  • Tailstock quill diameter: 88 mm; quill stroke: 85 mm (hydraulic)
  • Flat-top chip conveyor and trolley included
  • Heat exchanger for electrical cabinet; LED work light


Standard equipment (selected)
  • Siemens SINUMERIK 828 D Basic control
  • Hydraulic 3-jaw chuck 250 mm with through-hole
  • Hydraulic tailstock
  • Automatic central lubrication
  • Chain-type chip conveyor
  • High-performance coolant system and coolant flush gun
  • Operator tools and manual


Technical specifications
  • Max. workpiece length: 420 mm; Centre height: 200 mm; Turning diameter over bed: 400 mm; Turning diameter over support: 250 mm
  • Travel X: 200 mm; Travel Z: 425 mm
  • Rapid feed X/Z: 20,000 / 25,000 mm/min
  • Chuck diameter: 250 mm; Spindle speed range: 50–2,000 rpm; Spindle mount: A2-8; Spindle bore: 86 mm (74 mm with draw tube)
  • Number of tool stations: 8; Boring bar Ø: 40 mm
  • Main motor rating: 15 / 11 kW; Coolant pump motor: 0.18 kW
  • Overall dimensions (L x W x H): 3.8 m x 1.87 m x 1.91 m; Weight: 3,400 kg

Catalogs

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Exhibitions

Meet this supplier at the following exhibition(s):

IMTS 2026
IMTS 2026

14-19 Sep 2026 Chicago (USA - Illinois) Hall South Level 3 - Stand 338012

Go to the Knuth Machine Tools website for more information

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