Gemini Ngm Gemini Ngm 1 Hintergrund
Axis drive

Highly dynamic linear motors

Mineral casting machine bed

Maximum stability for production

Turning axis

Highly dynamic linear axis for profile back off grinding

gemini GHP

The highly dynamic 6-axis CNC grinding machine for relief grinding of hob cutters.

The geminiGHP is the highly dynamic 6-axis CNC grinding machine for the profile back off grinding of hob cutters. Maximum precision is guaranteed with a total of 6 CNC axes with linear and torque motor technology.

The oscillating grinding process is the heart of the system for generating precision back off grinding. Thanks to interchangeable grinding heads, with and without support center, grinding wheels with diameters of between 25 and 120 mm can be used. The high-performance control system processes precise way points along the back off grinding curve, low moving masses and modern linear motors guarantee very high dynamics. The set-up for new tools is supported through a direct graphical operator interface on the machine and is very efficient and user-friendly.

Numerous accessories for the application spectrum and increased productivity:

  • Dressing unit for dressing profiles
  • Manual or hydraulic tailstock
  • Synchronous pawl system and clamping mandrel
  • Coolant filtration system
  • Exhaust air filter
  • CO2 extinguishing system

Gear Hob Profiling on Schneeberger CNC tool grinder

Technical Data


X-axis, 400 mm stroke, longitudinal slide, resolution 0.1 µm (optional: 50 nm or 10 nm)

Y-axis, 300 mm stroke, vertical column, resolution 0.1 µm (optional: 50 nm or 10 nm)

Z-axis, 280 mm stroke, cross slide, resolution 0.1 µm (optional: 50 nm or 10 nm)

A-axis, workpiece carrier, free rotation, ISO 50, resolution 0.0001°, center height 210 mm

(optional: resolution 0.000045°, 800 rpm, 218 Nm)

C-axis, 240°, grinding head rotation, direct measuring system, resolution 0.000045°


FANUC 31i B5, 5 axes simultaneously

15‘‘ colour monitor with keyboard and touch screen, USB 3.0

Grinding head:

Head replacement system, grinding discs from Ø 25 mm to 120 mm, with or without heel;

water-cooled grinding motor, ceramic hybrid bearing.

15 kW 100 % ED; 3000 ÷ 25,000 rpm.


8'000 kg (17'637 lbs)