Herber Engineering AB, a part of Duroc ab

Herber 76 CNCTB

Four-axis tube bending machine for advanced bending.


Herbers four-axis press bending machines model 76-90 and 127 CNC TB with capacity OD 63 x 5 mm, 90 x 5 and 127 x 5 mm. Fully equipped for loop bending with radius down to 1 x the pipe’s outer diameter.

Technical data

  • Capacity, Ø mm — 63 x 5
  • Radius, min/max — 40/200
  • Radius difference –
  • Bending speed/repeatability — 40º/s. ±0,1°
  • Length of mandrel — 3 000
  • Weight, kg — 7 000
  • Motor kW — 32
  • Length feeding — 900 mm/sec
  • Degree of tolerance — 0,05–0,1°/mm

Standard components conform to VDMA, ISO and DIN standards.

Standard equipment

  • Programmable speed- and pressure setting of the booster unit
  • Individually programmable speed and acceleration/retardation
    of each axis
  • Laser scanner for clamp jaw and pressure die
  • Programmable tolerance range of each separate axis
  • Standard components from well-known european manufacturers


  • Online connection with CAD system or measuring machine
  • Customized software
  • Macro programming
  • Automatic tube magazine with automatic tube loading

CNC-control system
The control system works with 4 individually programmable axes

  • Bending
  • Tube rotation
  • Length feeding
  • Booster pressure/speed

The CNC-system is a close loop system which does not allow the machine
to continue before previous movement has reached its programmed
position. To optimise the accuracy and speed of the machine the degree of tolerance is programmable. Normal programmed tolerance is ±0,05-0,1

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