Herrenknecht tunnel boring machinery and OEM spare parts

Supply advanced mechanized tunnel boring machines (TBM), utility microtunnelling systems and genuine OEM spare parts from Herrenknecht directly for major underground projects.

Earth Pressure Balance Shields (EPB Shield TBM)

Herrenknecht EPB Shield tunnel boring machines are designed for tunnelling in cohesive soft ground, clays, silts and fine-grained sediments.

Face support is maintained by pressurizing the excavated soil paste within the excavation chamber, balanced dynamically through screw conveyor rotational speed.

Boring diameters from 3 m to over 16 m for metro systems and vehicular tunnels
Precise face pressure control via synchronized thrust cylinder and screw speed
Conditioning injection systems for foam, polymer and bentonite conditioning
Spare parts: screw conveyors, thrust cylinders, main drive seals, segment erectors

Mixshield Slurry TBM Systems

Herrenknecht Mixshield slurry-supported tunnel boring machines excel in non-cohesive soils, gravel, coarse sand and heterogeneous ground under intense hydrostatic water pressure. An integrated compressed air cushion continuously regulates bentonite slurry pressure against the cutting face.

Submerged submerged wall design with automated compressed air bubble control
Hydraulic slurry circuit transport of excavated spoil to surface separation plants
Integrated jaw crusher and rotary stone crusher for boulder reduction at intake
Spare parts: slurry slurry pumps, rock crusher jaws, slurry pinch valves, air seals

Hard Rock Tunnel Boring Machines (Single & Double Shield)

Herrenknecht Single Shield, Double Shield and Gripper TBMs are engineered for high-advance mechanized tunnelling through solid rock formations, granite, basalt and competent sandstone. High-torque cutterheads equipped with heavy-duty disc cutters penetrate high-strength rock formations efficiently.

Double Shield TBM: concurrent excavation and precast segmental ring installation
Gripper TBM: open rock boring with lateral gripper shoe anchoring against sidewalls
High-tensile heavy-duty cutterheads fitted with 17-inch and 19-inch roller disc cutters
Spare parts: roller disc cutters, gripper pads, main bearing drives, hydraulic jacks

AVN Microtunnelling Systems (Utility Tunnelling)

Herrenknecht AVN microtunnelling machines (AVN 250 to AVN 4000) enable trenchless installation of sewers, water pipelines, gas conduits and cable corridors in congested urban environments without surface disruption or street excavation.

Bore diameters from 250 mm to 4,000 mm with closed hydraulic slurry muck removal
ELS laser optical target navigation system providing sub-millimetre target accuracy
Integrated conical rock crusher head pulverizing cobbles and hard gravel inclusions
Spare parts: AVN cutter heads, navigation target sensors, jacking pipe cylinders

Direct Pipe & Pipe Express Pipeline Installation

The Herrenknecht Direct Pipe system combines microtunnelling and HDD methods, driving and installing a pre-fabricated welded pipeline string in a single step using the Pipe Thruster with push/pull thrust capacities up to 750 tonnes.

Trenchless steel pipe installation under rivers, shipping channels, railways and motorways
Pipe Thruster unit exerting clamping and thrust push forces up to 7,500 kN (750 t)
Pipe Express technology: semi-open trenchless pipeline laying advancing up to 1 km/day
Spare parts: Pipe Thruster clamping inserts, bentonite injection pumps, flexible joints

Roller Disc Cutters, Scrapers and Cutting Tooling

Genuine Herrenknecht cutting tools engineered to withstand extreme impact fatigue and abrasive wear during high-thrust rock excavation. Heavy-duty roller disc cutters from 12-inch to 19-inch diameters feature precision-hardened alloy cutter rings and high-capacity tapered bearings.

12-inch, 14-inch, 17-inch and 19-inch disc cutters with carbide inserts and forged rings
Rip teeth, drag bits, soft-ground clay scrapers, bucket knives and wear protection plates
Patented wedge-lock quick-change cutter housing systems for rapid hyperbaric servicing
Spare parts: replacement cutter rings, Timken roller bearings, Duo-Cone mechanical face seals

TBM Main Drive Assemblies, Slewing Bearings and Seals

The heart of each Herrenknecht TBM is the high-torque Main Drive rotating the cutterhead under immense thrust loads. Multi-chamber radial seal packages protect high-precision large-diameter slewing bearings from water ingress, abrasive bentonite slurry and hyperbaric pressure up to 10 bar.

Multi-lip radial elastomeric seal cassettes engineered for harsh hyperbaric slurry conditions
Heavy-duty triple-row cylindrical roller slewing bearings supporting multi-thousand-tonne loads
Planetary speed reducers powered by variable frequency electric motors or hydraulic drives
Spare parts: lip seal cassettes, continuous grease injection pumps, temperature sensors

Thrust Cylinders, Muck Screws and Slurry Slurry Pumps

The comprehensive hydraulic network provides multi-thousand-tonne forward thrust and muck handling. We supply high-pressure thrust cylinders, hydraulic drive motors, proportional control valves, slurry pumps and abrasion-resistant pipeline gate valves for all Herrenknecht machinery.

High-pressure forward thrust cylinders up to 500 tonnes per jack with ceramic rod coating
Heavy-duty ribbon and centerless screw conveyors armored with Hardox wear plates
High-capacity centrifugal slurry pumps engineered with high-chrome alloy wet ends
Spare parts: Herrenknecht valve 27106165, cylinder seal repair kits, pump wear liners

Equipment identification and Herrenknecht project documentation

Every mechanized tunnel boring machine designed by Herrenknecht is tailored to site-specific geotechnical parameters, tunnel curvature and hydrological pressures.

To order replacement parts or configure auxiliary equipment, provide the machine serial number and Herrenknecht project identification number stamped on the metal operator cab rating plate.

Herrenknecht AG operates primary manufacturing facilities in Schwanau, Germany, alongside specialized assembly bases in China. Specifying the project dossier ensures direct compatibility.

Earth Pressure Balance Shields and excavation chamber pressure

Herrenknecht EPB Shields excavate cohesive soft ground, silt, clay and alluvial deposits safely beneath sensitive urban infrastructure.

The cutterhead rotates within a pressurized chamber where excavated paste acts as direct support balancing earth and groundwater forces.

We supply cutterhead drag picks, soft ground scrapers, conditioning foam injection nozzles and synchronized soil pressure sensors.

Muck screw conveyors and high-wear armored ribbon augers

In EPB operations, the screw conveyor regulates discharge volume to maintain chamber pressure while removing spoil toward the belt conveyor.

High-speed friction with abrasive quartz sand causes intense wear across flight peripheries and casing liners.

We provide replacement continuous and ribbon screw shafts armored with tungsten carbide coatings, Hardox wear liners and hydraulic drive motors.

Mixshield slurry technology and compressed air cushion regulation

Herrenknecht Mixshield machines are engineered for non-cohesive gravels, permeable sands and fissured rock beneath high hydrostatic water heads.

An integrated submerged bulkhead with an active compressed air cushion isolates face slurry pressure control from muck conveyance.

We supply slurry circulation booster pumps, air injection regulation valves, density probes and hyperbaric access airlock seals.

Integrated jaw crushers and slurry transport pipeline valves

Boulders entering the Mixshield suction intake must be broken down to prevent slurry pipeline blockages.

Heavy-duty jaw crushers mounted in the invert crush boulders down to pumpable slurry grain sizes under high pressure.

We supply manganese steel crusher jaw plates, slurry centrifugal pump impellers, suction casings, pinch valves and polyurethane elbows.

Hard rock TBMs: Single Shield, Double Shield and Gripper systems

For solid granite, basalt, gneiss and hard limestone, Herrenknecht builds Single Shield, Double Shield and open Gripper TBMs capable of high advance.

Double Shield TBMs enable simultaneous boring and segmental ring erection inside the tail skin, maximizing advance rates.

Gripper TBMs anchor hydraulically against rock sidewalls. We deliver gripper shoe friction pads, drill mast drives and main thrust cylinders.

Heavy-duty roller disc cutters and hyperbaric tool change locks

Cutterhead breaking tooling endures continuous impact fatigue under single-cutter thrust loads exceeding 250 kN in bedrock.

We supply 17-inch and 19-inch disc cutters manufactured from hot-forged alloy tool steels with precision heat-treated cutting rings.

Cutters incorporate Timken tapered roller bearings and Duo-Cone face seals, alongside patented wedge-lock housings for rapid servicing.

Main drive transmission, slewing bearings and multi-lip seals

The main drive transmits multi-thousand kNm torque to rotate the cutterhead while absorbing heavy eccentric rock reactions.

Multi-row cylindrical roller slewing bearings are shielded from abrasive bentonite and grit by pressurized multi-chamber radial lip seal cassettes.

We supply replacement HNBR lip seal rings, hardened running tracks, planetary reduction gearboxes, electric motors and grease injection units.

Hydraulic thrust cylinders, segment erectors and hydraulic valving

The forward propulsion system consists of grouped high-pressure thrust cylinders reacting against installed precast concrete lining rings.

Hydraulic segment erectors grip, maneuver and position multi-tonne concrete segments with 6 degrees of positional freedom.

We deliver thrust jacks with laser-clad corrosion-resistant rods, proportional valves, pressure cartridges and valve 27106165.

AVN microtunnelling machines for trenchless utility networks

Herrenknecht AVN microtunnelling systems (diameters 250 mm to 4000 mm) install sewers and utility pipelines beneath active urban infrastructure.

Equipped with closed slurry circuits and conical rock crushers, AVN machines navigate soil and boulder ground without trenching roads.

We provide AVN cutting wheels, ELS laser target navigation units, bentonite lubrication stations and intermediate jacking stations.

Direct Pipe single-pass crossings and Pipe Thruster propulsion

Direct Pipe technology installs prefabricated steel pipelines under rivers and highways in a continuous single-pass operation.

The mobile Pipe Thruster exerts up to 750 tonnes of continuous push-pull force, clamping around the carrier pipe safely.

We supply Pipe Thruster clamping pad inserts, high-pressure hydraulic power packs, flexible slurry line hoses and microtunnelling cutterheads.

Turnkey equipment delivery, field assembly and overhaul services

We manage international procurement of new and refurbished Herrenknecht tunnel boring machinery, cutterheads and specialized spare parts.

Our engineering team coordinates heavy-haul logistics, customs formalities, factory acceptance testing and site commissioning.

Field technical specialists assist with hyperbaric inspection planning, cutter maintenance workshops and scheduled overhauls.

Specifications, delivery lead times and pricing for Herrenknecht equipment and spare parts are determined on a per-project basis upon commercial enquiry. Terms, warranty and delivery scope are formalized in the sales contract.