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Valve and Valve Seat Grinding Machine / VGT

For grinding of valves and valve seats on two stroke diesel engines.

The VGT is an automatically driven valve and valve seat griding machine grinding machine and is available in a number of versions intended for use on crosshead engine exhaust valves.The VGT is adjustable to all valve and seat angles and provides reliable operation and complies with engine designers’ strictest requirements.

The grinding machine is electrically driven and easy to operate. It is of robust construction and designed as a professional tool for grinding valve spindles and valve seats both onboard and ashore. Due to its sturdy design and incorporated features, such as a high precision grinding spindle, automatic centring and insensibility to vibrations, assure a high quality grinding result, also under the most demanding operating conditions, which is naturally required on a ship in service at sea.

The Chris-Marine VGT features:

  • Anti vibration mounts (A).
  • Self-centring system for valve spindle and valve seat (B).
  • Grinding angles (C) locked in accurate position according to engine builder’ requirement.
  • Balancing apparatus included (D).
  • Diamond dresser for grinding wheel and full set of tools included.

The VGT is available for several engine makers, such as: MAN B&W, Mitsubishi, Wärtsilä, etc.

Technical specification

Machine capacityUp to 96 mm valve stem diameter
Weight250 kg
Max dimensionsH: 1300 - 1700 mm, W: 700 - 960 mm
Electric power supply3-phase 220 - 250 V 50/60, Hz 3-phase 380 - 440 V 50/60 Hz
Noise level81 dB (A) / 80 dB (C)
Normal grinding time10 - 20 min
Power requirement1.3 kW