مخرطة المعادن Knuth DL 425/4000 S

turning length 4000 mm
turning diameter 850 mm
turning dia. in gap 1150 mm
turning diameter over slide 520 mm
turning speeds 5.0 - 630 U/min
quill: 6 MK
quill travel 250 mm
spindle bore 100 mm
workpiece weight max. 4000 kg
bed width 600 mm
travel -x axis 500 mm
travel -z axis 3700 mm
rapid traverse X 1800 mm/min
rapid traverse Z 3640 mm/min
feeds X : 0.04 - 4.8 mm/min
feeds Z : 0.08 - 9.6 mm/min
feeds Z1 : 0.02 - 2.4 mm/min
engine output 20.0 kW
weight of the machine ca. 6800 kg.
dimensions 6150 x 1500 x 1500 mm
** good / well-maintained condition (!!)
** original price at the time approx. 65.000 euros
** special price on request

Description:
- particularly heavy, heavily ribbed and wide machine bed
- in a rigid one-piece monoblock design
- induction-hardened and ground guide prisms
- guarantee long-term accuracy and minimal wear
- solid headstock
- with high-precision, tapered roller bearing main spindle
. and 100 mm spindle bore
- excellent smooth running at maximum spindle speed
- joystick switch for X and Z feed directly on the support
- manually switched 4-stage countershaft gear,
- powerful main spindle motor enables exact adjustment of the speed
. and high torque for heavy machining
- rapid traverse for X and Z axes enables quick positioning of the support
. and reduces idle times
- adjustable overload clutch in the lock case protects the feed mechanism
. against damage and failures
- central, handy control for feeds and thread pitches
- the feed gear offers a wide range of
. diametric, inch, module and metric threads
- support and top slide are designed for large cutting forces
- higher working precision
- user-friendly functions

Scope of delivery:
- SINO position indicator
- TOS 3x jaw chuck .. Ø 400 mm
- 4-jaw faceplate chuck Ø 800 mm
- 4-way tool holder
- Fixed steady rest 40-350 mm
- Follow-on steady rest 30-120 mm
- Fixed centering point
- Reducing sleeves
- Chuck protection
- Coolant device
- Machine leveling feet
- Work light
- Operating tools
- Operating instructions
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