cutter tool
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UTILITY TUNNELLING TRAFFIC TUNNELLING CUTTER TOOLS

Reliability, long lifetime and service. In mechanized tunnelling, choosing the right Cutter Tools is a question of trust. Lifetime, efficiency and reliability of Cutters, also called Cutter Disks or Disks, can considerably affect the profitability of mechanized tunnelling works. Cutters are exposed to more different and sometimes extreme conditions during tunnelling than any other Cutter Tool. Ground temperatures of up to 50 degrees centigrade, rock strengths up to 350MPa, high water pressures, dust or sand put the Cutter Disks and their components to the test. Naturally, the disks need to...

RELIA B I L I T Y I S E V E RY T H I N G . Herrenknecht supplies hardware plus service. In addition to the Cutters, Herrenknecht also provides the associated Cutter Service. The service program includes local Cutter Shops that are set up on the construction site. The Cutter Shops guarantee that frequently required spare parts are close at hand and worn Cutters can be quickly refurbished. The Cutter Database is a service frequently used by customers. It helps the site management finding optimum maintenance intervals for the Cutter Tools and thus reduce costs (see pages 12|13). Herrenknecht...

A question of economic efficiency: Proper strategies in exchange and refurbishment of Cutter Tools.

FOR E V E RY M I S S I O N T H E S UITABLE TOOL. Through thick and thin. Ground conditions determine the selection and composition of the Cutters as well as their arrangement on the Cutterhead. Every geological condition challenges different areas of the Cutters and their 20 individual components in terms of lifetime. In soft and mixed ground conditions, the entire hub area is often exposed to considerable wear due to the conditions encountered. Sometimes, it is even necessary to apply special hard-facing. Herrenknecht Cutter crack any geological challenge. Soft Ground Mixed Ground Hard Rock

When everything fits in hard rock tunnelling, the tunnel face is excavated perfectly. During excavation under high water pressures, the bearing seals are put to the test. Moreover, the correct preload of the Cutter bearing is important for tunnelling in complex ground conditions. The preload must be carried out sensitively and with the necessary experience, especially in soft ground in order to ensure that the Cutters rotate freely and to prevent them from becoming blocked. Here, Herrenknecht has gained a comprehensive know-how due to its worldwide experience. The ultimate test. During hard...

Always the right tool. As market leader, Herrenknecht supplies tunnel boring machines, adapted to the specific projects, with diameters up to 16m in the field of Traffic Tunnelling. We provide machines for all ground conditions: soft, hard, dry or water-bearing ground. Herrenknecht also produces the entire established range of Cutters: 14", 17" and 19" Cutters with ring widths from 13 up to 24mm. Cutters are available as “Single Disks”, “Twin” or “Double Disks” in addition to “Monoblock Versions” (14" and 17"), depending on the position in the center, face or gauge area of the Cutterhead....

must also be considered. This applies particularly to the gauge Cutters that are exposed to greater wear due to higher stresses and thus need to be exchanged and refurbished more often. In this case, Herrenknecht can provide its contractors with integrated solutions by combining know-how in the field of mechanical tunnelling technology with our experience in tool wear and replacement. During the design of the Cutterhead and the rear machine area we take into account that wear-intensive tool positions must be easily accessible. Besides saving time, safety is essential. Backloading systems...

A lack of space leads to diversity. Utility Tunnelling machines – regardless of the geology – have one thing in common: There is not a lot of space on their Cutterhead. Consequently, this restriction leads to diversity. Like for large-diameter machines, the object is to achieve a possibly uniform penetration of the tunnel face. For Utility Tunnelling Cutterheads Herrenknecht therefore offers a wide range of Cutter Tools. The range for hard rock formations starts with the 8“ Cutter Disk. Herrenknecht has specialized in Cutters with a diameter from 8“ upwards in the field of premium Utility...

Soft Ground Mixed Ground MATERIAL SPECIAL FEATURE tempered steel tool steel Single: high-alloy pressure compensation up to 100 hardened and pressure compensation tempered steel Single: high-alloy tool steel tool steel Single: high-alloy tool steel tool steel

MAINTENANCE MANAGING EFFICIENTLY. Effective refurbishment: In general only the Cutter Rings have to be changed, as only these directly jcutter inventory Read only Cutterhead Inspection ^ Cutter Parts List jsample Project Note: you can find further information on the Cutter Database as well as contact details in the Herrenknecht R Et D brochure. Furthermore, please visit www.herrenknecht.com

The Cutter Database gives an overview. In addition to the wide range of Cutter Tools for all imaginable applications, Herrenknecht provides its customers with comprehensive, prac- tical services. The Cutter Database developed by Herrenknecht is a management tool that has already been frequently used by customers. It is based on the experience of wear and Cutter exchange strategies gained during a number of projects. The Cutter Database allows users to develop economic project strategies in terms of Cutter Disk exchange and refurbishment. At the same time, the database incorruptible records...

Dismantling of the Split Ring from the Hub. Tailor-made refurbishment. A service often used and appreciated by contractors is the setting up of local Cutter Shops on the construction site. Herrenknecht Cutter Shops are equipped with all necessary tools and spare parts to refurbish worn Cutter Disks promptly and professionally. Cutter Shops can be set up on any site worldwide. Of course, worn Cutters can also be refurbished in the Herrenknecht Cutter production plants in the USA, Switzerland and China. On behalf of the contractors, Herrenknecht also manages the storage of the Cutter Tools or...