Archive | December, 2014

Cutterhead Supports for tunnel boring head (TBM)

Friday, December 12, 2014


Galbiati recently designed control units (Cutterhead Supports) for the rotating head of an EPB (Earth Pressure Balance) tunnel boring machine for an excavation project in Mexico City, Mexico.

Below are a few photos showing the TBM cutterhead supports made entirely in the assembly area of Galbiati’s factory.

A few technical details of the control units: cutterhead support measuring 4.5 m in diameter with roller bearing measuring 4 m in diameter, 11 planetary gear units with two-speed gearbox – transmitted power of 330KW each, lubrication system. Overall weight 130 tons.

Cutterhead Supports for tunnel boring head – TBM

Thursday, December 11, 2014


The control units (Cutterhead Supports) designed for an excavation project in Mexico at Galbiati’s factory proved to be a challenge to handle, pack and transport due to the sheer size and weight of the support.

The EPB (Earth Pressure Balance) for which the control units were designed will have a boring head measuring 8.7 metres in diameter and will be used on site to excavate a tunnel for sewerage.

The EPB (Earth Pressure Balance) TBM will be assembled at the site early to mid 2015 and the machine shall be fully operational on site before the summer.

Below are a few photos of the TBM cutterhead supports handled and packed in the assembly area of Galbiati’s factory.

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