Corvus Ngb Corvus Hintergrund
Axis drive

Recirculating ball screw or highly dynamic linear motors

Motor spindle

Grinding spindle power 82kW peak, highest power for the production of large tools with high volume chip removal

Cylindrical grinding axis

Optionally available concentricity function with torque up to 1250 Nm

Long tools

Thanks to the 850 mm to 3100 mm X-stroke, the largest of tools can also be processed.

corvus NGB C-type

The 5-axis CNC grinding machine for long and heavy tools such as granulate mills, large die sinking end mills, end mills, prismatic or round broach tools, grooved shafts and gear racks!

5-axis CNC grinding machine corvus NGB;High-performance for large parts and high grinding power for the production of all large cutting tools with complete processing OD and face, up to 2800 mm cutting length, diameter up to 400 mm, maximum workpiece length that can be chucked up is 3500 mm. With the T-Slotted table, the machine envelope offers the flexibility to install a great variety of clamping systems from tailstocks to magnetic chucks.

CNC grinding of knives for the paper, tooling for the food and plastics industries, profile grinding, cylindrical grinding and surface grinding.

Accessories for individual expansion of the application spectrum and increased productivity:

  • X-stroke of 850 mm up to optional 3100 mm
  • 6-axis robot for loading workpieces with 4 pallets or carrousel design for tool holders for tools with HSK mounts
  • Grinding wheel loader with 8 grinding wheel packages incl. coolant nozzles
  • Grinding spindles with a power rating of up to 53 kW / HSK 190
  • Direct measuring system in all axes
  • Linear motors in all axes available
  • Direct drive motor for cylindrical grinding up to 1250 Nm torque
  • Dressing unit for dressing profiles
  • Manual or hydraulic tailstock
  • Manual, hydraulic or CNC controlled steady rest, following the grinding point
  • Collet chucks, clamping mandrel, magnetic chucks
  • Coolant filtration system
  • Exhaust air filter
  • CO2 extinguishing system

Gear Rack Production on Schneeberger CNC grinder

Profiling of Broaching Tools, complete process in one single clamping with the Corvus NGB-BBA

Broach Production on Schneeberger CNC tool grinder Corvus

Technical data


X: 850, 1250, 2100, or 3100 mm longitudinal axis, linear motor, resolution 10 nm

Y: 400 mm , transverse slide, recirculating ball screw or linear motor, resolution 50 nm or 10 nm

Z: 400 mm , vertical axis, recirculating ball screw or linear motor, resolution 50 nm or 10 nm

A: ∞ ISO 50 tool carrier, resolution 0.0001°

C: 360° Rotation of the grinding head, resolution 0.0001°


FANUC 31i-B5, 5 controlled axes

19” TFT color monitor with touch screen, USB 3.0


Fanuc robot, 4 pallets or arbor arena with 24 positions

Wheel loader with 7 positions for 21 grinding wheels

Grinding head:

Double ended grinding spindle with direct drive, HSK 50 / HSK 80 or grinding spindle HSK 190 with permanent balancing unit, grinding wheels from Ø 30 to Ø 450 mm

Optional: Grinding spindle with automatic clamping HSK 50 / HSK 80, for wheel loader

10 kW (100 %), 13 kW (60 %), 24 kW (100 %), 32 kW (60 %) or 30 kW (100 %), 53 kW (60 %)


X-stroke 850: L 2885 mm, weight 12,000 kg

X-stroke 1250: L 3285 mm, weight 13,500 kg

X-stroke 2100: L 4135 mm, weight 17,000 kg

X-stroke 3100: L 5365 mm, weight 20,500 kg


Corvus NGB