Trenchless Technology HDD drilling machines and piercing tools
Ramming accessories

Start, tensioning and service accessories

Ram plates (from Ø 800 mm)

    Special ram plates are offered for pipe diameters from Ø 800 mm. Ram plates are a lot lighter than the corresponding lock‐in system. The openings in between its arms allow spoil access at the back end of the steel pipe during the ramming procedure. Ram plates can be combied with larger lock‐in ram rings.

Ram plates (from Ø 800 mm)
Ram plates (from Ø 800 mm)


Ram rings (Lock‐in system)

    TERRA ram rings transfer the ramming energy of the TERRA‐Ram into the steel pipe. All TERRA ram rings have an outer cone and a pipe stop. The outer cone fits the inside of the steel pipe. The pipe stops prevent the ram ring from being over driven. They also prevent "belling" of the steel pipe. The pipe stop transfer 100 % of the ramming energy.

    For steel pipes with an inner diameter of 365 mm and above, the TERRA lock‐in system is used. The TERRA lock‐in system consists of different ram rings each designed to interlock.

Ram rings (Lock‐in system)
Ram rings (Lock‐in system)


Launching and Tensioning Accessories

    During the launching procedure tensioning accessories for tensioning the TERRA‐Ram against the steel pipe are neccessary. The chain is used to connect the steel pipe with the ratchet tensioner.

Launching and Tensioning Accessories
Launching and Tensioning Accessories


TERRA oiler and special oil

    TERRA developed a special oil for its rams. The synthetic HD oil with high viscosity and additives operates down to ‐25 °C (antifreeze) and ensures a long lifetime of your TERRA‐Ram. The oil is biodegradable.

TERRA oiler and special oil
TERRA oiler and special oil


Service Accessories

    For each ram we offer:

  1. Heavy Duty C‐Spanner
  2. Heavy Duty ring spanner
  3. Service parts kit
  4. Tool kit

    Tell us the model and the serial number of your TERRA ram. We can then immediately despatch your service parts.

Service Accessories
Service Accessories



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TERRA AG für Tiefbautechnik - Hauptstrasse 92 - 6260 Reiden - Schweiz - Tel. +41 62 749 10 10 - office@terra-eu.eu