NEW: The SCHNEEBERGER Corvus NGB 4’500, the CNC grinding machine with 4.5m (177”) travel.

The longest version of the legendary Corvus NGB 5-axis grinding machine opens doors to applications in new dimensions: Precision shafts with splines or threads, splined shafts, camshafts, extruders, embossing rollers and XXL cutting tools. Everything that is large, certainly also heavy and always high-precision ground.


The latest addition to the J. SCHNEEBERGER Maschinen AG product range is designed for large grinding jobs. With years of know-how in the construction of traveling column machines and their diverse range of applications, there had to be a natural evolution: A machine even bigger and even stronger than the four smaller Corvus sisters.

5-axis CNC grinding of parts over 4 m long is a novelty. What is otherwise only produced labor-intensively on 4-axis cylindrical or surface grinding machines can now be machined in one clamping with higher production complexity. Threads, Flutes and Profiles require 5-axis technology.

The experts of SCHNEEBERGER grinding technology and their preferred CAD/CAM software Qg1, have experience in 5-axis grinding - regardless of part size. The 3D representation of parts, grinding processes and machine simulation are scalable. Well-known features such as 3D import, automatic calculation of form wheels and clearance grinding are also in demand for large-part production.

Specifications of the new Corvus NGB 4’500:

  • Center distance and max tool length 5.1m/200”, diameters up to 600mm/23.5” and up to 7t max weight.
  • A T-slotted tool table of 6.7m/263.7” length
  • Chucking options for large tools such as A-axis, support bearings with 4jaw chucks, magnetic plates and steady rests.
  • Work travel: X 4500mm, Y 400mm, Z 400mm, A, B, and C 360° each.

Proven technology for the Corvus type machine:

  • Corvus conform a solid machine design. Adapted to the new dimensions results in 44 ton of the most advanced machine designs.
  • Perfect machine kinematics for every application: Swiveling spindle axis as version B- or C-axis.
  • Dynamic and precision: Linear motor (optional) and high precision direct scale feedback.
  • Large selection of wheel spindle power with continues power from S1 to 30kW and high frequency spindles up to 60’000RPM
  • A-axis direct drive motor with 1200Nm torque.
  • The Corvus NGB machine is available in in five different lengths: 850, 1’250, 2’100, 3’100, new 4’500mm in X.

Do you have the right job for the new Corvus NGB 4'500? We will be happy to advise you: Contact your nearest SCHNEEBERGER sales engineer or representative.