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CU500MTRD / CU630RD / CU730RD


The headstock is manufactured of a single, well ribbed and proportioned casting of special stabilized cast iron.

The headstock unit design has been fulfilled so to achieve the maximum of rigidity and less vibration.

All the gears and spline shafts are made in high quality steel, hardened and ground.

The lubrication is automatic, realized by one gear pump and set of pipes.

The spindle speed is infinitely variable. It is changed by so called “inverter“, turning one potentiometer.


It is made of high resistance steel, casehardened, tempered and ground.

It is supported by precision, taper roller bearings SKF or FAG.

It is equipped with rear lock ring for the lash adjustment.

The spindle speed is infinitely variable. It is changed by so called “inverter“, turning one potentiometer.


Heavy, large, strongly ribbed, cast iron bed with removable bridge, gives the machine great rigidity. The guideways are induction hardened and ground.

The guideways lubrication is automatic.


The norton box insure the execution of large range of automatic longitudinal and cross feeds and metric, whitworth, modular and diametral pitch threads without changing gears.

The lubrication of the norton box is automatic, realizes by a piston pump and pipes.


Slides and carriages are well proportioned and equipped with steel tapered gibs for the lash adjustment.


In the apron made of casting are placed all the controls for longitudinal and cross feed as well as the threading device.

It is supplied with a safety device which prevents the thread cutting and feed device acting simultaneously.

In the apron there is an automatic piston pump which lubricate the guideways of the lathe and the thread cutting nut.

On the apron is mounted also the electric motor which provides rapid longitudinal and cross travels of the carriage.


Strongly build with casehardened, tempered and ground quill, provided with extraction slot.


The electrical equipment consists of low voltage components, SCHNEIDER brand - Germany.

Technical Parameter Unit CU500MTRD CU630RD CU730RD
Height of centersmm250315365
Swing over bedmm500630730
Swing over cross slidemm300430500
Swing in gapmm700830930
Width of bedmm400
Distance between centers (DBC)mm1000 / 1500 / 2000 / 3000 / 4000 / 5000
Spindle nose CAM LOCKNo.11
Spindle boremm103
Number of spindle speeds sub-ranges 3
Spindle speeds sub-ranges (stepless – infinitely variable): 
I subrangerpm16 - 63 16 - 63 16 - 63
II subrangerpm63 - 250 63 - 250 63 - 250
III subrangerpm355 - 1400 315 - 1250 315 - 1250
Main motor powerkW11
Number of feeds 120
Longitudinal feed rangemm/rev0.04 - 12
Cross feed rangemm/rev0.02 - 6
Longitudinal rapid traverse speedmm/min3800
Cross rapid traverse speedmm/min1900
Number of threads 64
Metric thread rangemm0.5 - 120
Inch thread rangetpi60 - 1/4
Module thread rangeModule0.125 - 30
DP thread rangeDP240 - 1
Cross slide travelmm315315390
Top slide travelmm130
Quill diametermm90
Quill travelmm230
Quill taperMorseNo 5
Length at DBC 2000 mmmm3600
Weight at DBC: 
1000 mmkg280030103200
1500 mmkg295031603350
2000 mmkg310033103500
3000 mmkg333035603710
4000 mmkg370039104100
5000 mmkg400042104400

Standard Equipment

  • Quick change toolholder with 5 holders
  • Back plate for chuck
  • Coolant system with electric pump
  • Spindle splash guard with microswitch
  • Toolholder guard
  • Low voltage machine lamp
  • Rear metal splash guard
  • Spindle dead center with adapter sleeve
  • Instruction manual
  • “CE“ norms Certificate

Optional Equipment

  • Selfcentering 3-jaw chuck dia. 315 mm
  • Independent 4-jaw chuck:
    - dia. 500 mm (for CU500MTRD)
    - dia. 600 mm (for CU630RD and CU730RD)
  • Travelling steady:
    - 15-200 mm (for CU500MTRD and CU630RD)
    - 20-200 mm (for CU730RD)
  • Steady rest small size:
    - 15-160 mm (for CU500MTRD)
    - 15-200 mm (for CU630RD)
    - 20-200 mm (for CU730RD)
  • Steady rest big size I:
    - 140-280 mm (for CU500MTRD)
    - 180-340 mm (for CU630RD)
    - 180-430 mm (for CU730RD)
  • Taper turning attachment +/-10 deg
  • Drive plate with set of lathe dogs
  • Live center MT 5
  • Drill chuck with arbor
  • 3-axis digital readout system
  • 2-axis digital readout system
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