TBM Cutting Tools & Spare Parts

Highly Reliable Design for Handling Complex TBM Construction Environments

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Disc Cutters & Components

Product Highlights

Manufactured with integral forging technology, Xinda Disc Cutters & Components deliver high structural strength, excellent fatigue resistance, and long-term operational stability. Critical load-bearing parts feature dense, uniform microstructures combined with mature heat treatment processes to reduce stress concentration and early failure risks. Selected tool steels such as H13 and DC53 ensure stable cutting performance under high contact pressure and severe abrasion. Compatible with single, twin, and multi-disc configurations, these components provide reliable, controllable performance for shield machines and TBM cutter systems.

Product form

① Cutter Shaft

Integral forged design ensures high strength consistency and enhanced fatigue resistance.

② Cutter Body

Dense forged structure provides stable load capacity and resists cracking and plastic deformation.

③ Cutter Ring

Selected tool steels deliver stable rock breaking with controlled wear performance.

④ Bearing System

High-load bearing assembly supports continuous rotation at low peripheral speeds.

⑤ Sealing System

Multi-stage sealing effectively blocks slurry, water, and dust ingress.

⑥ End Cap

Integral forged end cap ensures structural reliability and long-term stability under demanding conditions.

Disc Cutters & Components Available from Xinda

Xinda supplies a complete range of Disc Cutters & Components covering core load-bearing and functional units, including cutter shafts, cutter bodies, cutter rings, end caps, bearing assemblies, and sealing components.

Designs can be customized to different cutter configurations and operating conditions, supporting both complete cutter assemblies and individual component supply.

Why Integral Forging Is More Reliable

In Disc Cutters component manufacturing, Xinda adopts integral forging instead of conventional bar machining or welded assemblies. This process significantly improves internal material density and mechanical consistency, reducing fatigue cracking and structural failure risks, and is better suited for high-load, long-duration tunneling conditions.

Cutter Ring

The cutter ring is the core working element directly involved in rock crushing and fracturing. Its material performance and structural stability determine cutting efficiency, service life, and overall system reliability.

Designed for high load, impact, and abrasive conditions, Xinda cutter rings deliver stable rock-breaking performance and controlled wear in mixed ground. Long-term shape stability and predictable wear behavior help reduce abnormal failures and unplanned downtime.

Product Configuration

Cutter Ring Types | Matched to Rock Properties & Fracture Mechanisms

Based on different geological conditions and rock-breaking requirements, Xinda offers multiple cutter ring configurations.

Wedge-Shaped Toothed Cutter Ring

Concentrates load through wedge teeth to induce rock cracking.Suitable for high-strength, intact hard rock conditions.

Smooth Ring

Achieves rock crushing through continuous, stable load bearing, suitable for steady tunneling in medium-hard to hard rock.

Ball-Tooth Ring

Creates localized high stress through point loading, enhancing breaking performance in high-strength and highly brittle rock formations.

Multi-Cutter Ring

Multiple cutters work in coordination to increase cutting frequency, balancing penetration efficiency and ring life under highly abrasive conditions.

Materials & Performance Advantages | Stable Rock Breaking with Balanced Service Life

Xinda cutter rings use high-performance tool steels such as H13 and DC53, achieving an optimal balance of strength, toughness, and wear resistance:

High compressive and impact resistance for high-thrust rock breaking
Stable heat-treatment performance with minimal property fluctuation in service
Controlled, uniform wear for predictable service life and maintenance planning
Strong resistance to chipping and sudden failure

Through optimized material selection and process control, cutter rings deliver stable, predictable rock-breaking performance across varying ground conditions.

Compatibility | Serving Multiple Cutter Types and Tunneling Systems

Xinda cutter rings are compatible with:

Single, double, and multi-ring cutter configurations
Hard-rock shield machines and TBM tunneling systems
Urban tunneling, hydropower works, mountain tunnels, and mining drifts

They can be supplied as core components of complete cutter systems or used for cutter replacement, system upgrades, and customized engineering requirements.