Forged Steel TBM Cutter Cutting Rings Manufacturer | Custom TBM Disc Cutter Rings for Tunneling Projects
Executive Summary
Jiangsu Liangyi make custom forged steel TBM cutter cutting rings for soft ground, mixed ground and hard-rock tunneling. This page organizes the most important specification, manufacturing, inspection and application information at the top for faster review.
At-a-glance fit
- Standard sizes: 17", 18", 19", 20" plus custom dimensions
- Product types: standard, heavy-duty, extra heavy-duty and TCI
- Main materials: D2, H13, AISI 52100, 1.2367 and related grades
- Compatibility: Herrenknecht, Robbins, Palmieri, Wirth and drawing-based replacements
What buyers can confirm on this page
- Product type selection for different geology and wear conditions
- Visible FAQ content consistent with the page information
- Manufacturing, heat-treatment and inspection scope
- Global application cases, compliance points and quotation details
- Product Overview
- Why Choose Our TBM Cutter Rings
- Available Material Grades
- Types & Performance Specifications
- How to Choose the Right Cutter Rings
- Advanced Manufacturing Processes
- Quality Inspection & Certification
- Global Project Application Cases
- Global Market Compliance & Service
- TBM Cutter Ring Selection Matrix
- Customization & Interchangeability
- Engineering Glossary
- Frequently Asked Questions
- Contact Us for Quotation
Technical Snapshot
| Item | Summary | Buyer relevance |
|---|---|---|
| Product scope | Forged steel TBM cutter cutting rings for TBM, shield, MTBM and pipe jacking applications | Supports replacement and custom new-project sourcing |
| Ring types | Standard, heavy-duty, extra heavy-duty and tungsten carbide inserted (TCI) | Lets buyers match ring design to geology and wear pattern |
| Common sizes | 17", 18", 19", 20" with custom dimensions on request | Useful for interchangeability checks and drawing review |
| Metallurgy route | EAF, EAF+LF+VD, ESR, PESR and other routes based on application criticality | Indicates cleanliness, toughness and performance control level |
| Heat treatment target | Typical hardness window HRC56-59 depending on ring type and service condition | Directly affects wear resistance, anti-chipping and impact toughness |
| Inspection package | Chemistry, mechanical tests, metallography, NDT, dimension test and traceability records | Helps EPCs and contractors review QA completeness before ordering |
TBM Cutter Ring Selection Matrix
Following are the summarized information about technical discussion for your reference. Procurement teams and tunnel engineers can quickly identify which ring family best matches the project condition before reading the detailed explanations.
| Ring type | Recommended condition | Typical material direction | Hardness range | Main value |
|---|---|---|---|---|
| Standard forged TBM cutter rings | Soft soil to mixed ground, moderate wear, urban tunneling and shorter drives | D2 / 1.2379, AISI 52100 and related grades | HRC56-58 | Balanced toughness, stable wear resistance and cost-effective replacement |
| Heavy-duty forged TBM cutter rings | Hard rock and highly abrasive formations, higher impact load and longer drives | H13 / 1.2344, 1.2367 and similar hot-work tool steel routes | HRC57-59 | Higher anti-chipping, anti-fracture and longer service life in hard-rock duty |
| TCI TBM cutter rings | Highly abrasive but not ultra-hard ground, where flat spotting and wear rate are key concerns | Forged steel ring body with tungsten carbide inserts | Project-specific | Improved wear resistance and stable rolling in abrasive formations |
| Extra heavy-duty custom rings | Ultra-hard rock, deep tunnel, unusual geometry or special failure mode investigation | Custom metallurgy and heat-treatment plan based on drawing and geology | Project-specific | Maximum engineering customization for extreme working conditions |
Product Overview
As a professional ISO 9001:2015 certified manufacturer, Jiangsu Liangyi have served clients with more than 25years of open die forging experience. Our main products include premium forged steel Tunnel Boring Machine (TBM) shield cutters, heavy-duty wide center disc cutter rings, and precision forged cutting rings for tunneling projects. As the mian excavation part of TBM equipment, our forged steel TBM cutter cutting rings have great wear resistance, impact toughness, and structural robustness. We can make products with fully customizable material grades, sizes, and heat treatment solutions based on your specific tunnel working conditions and geology.
TBM disc cutters are disc-shaped roller cutters installed on the cutterhead of tunnel boring machines, and they are improtant excavation tool for breaking soft soil, mixed ground, and hard rock formations. We provide forged TBM cutter rings in a full range of sizes and specifications. They are fully compatible with cutterheads of all major trenchless construction equipment including TBMs, shield machines, MTBMs, pipe jacking machines, and shaft boring extension machines. They are used in subway tunnels, high-speed railway tunnels, water diversion tunnels, urban underground pipe network construction, mining, hydropower, and other heavy-duty infrastructure industries in more than 50 countries around the world.
Why Choose Our Forged Steel TBM Cutter Cutting Rings?
Full In-House Manufacturing Chain
We provide a full range of service from steel melting, open die forging, precision heat treatment to final CNC machining and full inspection, all processes are strictly controled in our factory in Jiangyin, China. Our factory covers 80,000㎡ and has 6300T hydraulic forging presses, 5T electro-hydraulic hammers, 30T EAF+LF+VD smelting equipment, and advanced testing labs, which make sure the whole production process is controlled well and all products have consistent quality and traceability for every TBM cutter ring .
Customized Solutions for Extreme Working Conditions
Unlike standard off-the-shelf products, our TBM cutter cutting rings are fully customized based on your project's geology, rock hardness, abrasiveness, and TBM model. We offer material selection, heat treatment processes, and profile design to improve excavation efficiency and lifetime.Our products are the best choice material for extreme conditions,such as soft soil, mixed ground, hard granite, or highly abrasive formations.
100% Interchangeability with Global Leading Brands
Our forged TBM cutter rings are 100% interchangeable in both dimensions and performance with original cutter rings from world-leading TBM manufacturers, including Herrenknecht, Palmieri, Robbins and Wirth.We tested all products with 3D dimensional inspection and full performance testing, making sure they all have the same consistent performance with original parts, but the cost of our parts are lower and lead time is shorter.
Rigorous Quality Control & Global Compliance
Every batch of our TBM cutter cutting rings undergoes 100% nondestructive testing (UT, PT, MT) and full performance inspection, compliant with ASTM, ASME, EN, DIN, and JIS international standards. We provide full mill test certificates (MTC) EN10204 3.1 / 3.2, ensuring full compliance with European, North American, Middle Eastern, and global market regulatory requirements.
Available Material Grades for Forged Steel TBM Cutter Cutting Rings
We offer a full range of international standard material grades for our forged steel TBM cutter cutting rings.Our metallurgical engineers will choose the right material grade based on your specific tunnel geology, rock uniaxial compressive strength (UCS), abrasiveness, and construction requirements:
- Cold Work Tool Steel: D3, 1.2080, X210Cr12, SKD1
- Premium Cold Work Tool Steel: D2, 1.2379, X153CrMo12, SKD11, DC53
- Hot Work Tool Steel: H13, 1.2344, X40CrMoV5-1, SKD61
- High Carbon Bearing Steel: AISI 52100, 100Cr6, EN31
- High Performance Hot Work Tool Steel: 1.2367, X38CrMoV5-3
We also accept custom material grade for special working conditions, including high temperature, high corrosion, and ultra-high hardness requirements. And they all meet international material standards. Learn more about our material capabilities.
Types & Performance Specifications of TBM Cutter Rings
We make many types of forged steel TBM cutter cutting rings for different ground conditions. They have improved profile and tip width (ranging from 13mm to 25mm), which make sure the excavation efficiency is increased , the lifetime is extended and project downtime is reduced. We produce standard sizes of 17", 18", 19", and 20", covering standard, heavy-duty, extra heavy-duty, and TCI types. And we can custom parts with differrent sizes based on your drawings.
Standard Forged TBM Cutter Rings
Our standard cutter rings are forged from high-quality alloy tool steel.They have a hardness of HRC56-58 after quenching and tempering heat treatment . This gets an ideal balance between surface hardness and core toughness, making them perfectly suitable for soft ground to mixed ground tunneling conditions. They also have stable performance and cost-effective advantages for urban subway and pipe network projects.
Heavy Duty Forged TBM Cutter Rings
Our heavy-duty cutter rings are forged from premium hot work tool steel, and they have HRC57-59 after multi-stage heat treatment .These parts are used for extreme hard rock and high abrasion working conditions, This optimized hardness and toughness balance effectively prevents edge curling, chipping, and fracturing under high impact loads. So that they are the best choice material for hard rock, highly abrasive rock, and long-distance tunnel projects such as high-speed railway and water diversion tunnels.
Tungsten Carbide Inserted (TCI) TBM Cutter Rings
Our TCI cutter rings are embedded with high-performance tungsten carbide tips, and they are used for highly abrasive but non-hard ground conditions. The undulating profile of the cutter rings making sure the rotation is stable in low-strength and abrasive rock formations, flat spotting is effectively avoided and excavation performance is consistent . This type is used in sandstone, conglomerate, and other highly abrasive soft rock formations in mining and water conservancy projects.
How to Choose the Right TBM Cutter Rings for Your Project?
Selecting the correct TBM cutter cutting rings is important to increase excavation efficiency, reduce downtime, and lower overall project costs. Our engineering team provides professional selection guidance based on decades of global project experience:
1. Soft Soil to Mixed Ground (UCS < 60MPa)
For urban subway tunnels, shallow buried pipe jacking projects, and mixed ground with soft soil and moderately hard rock, our standard forged TBM cutter rings are the best choice material. They are made of D2 (1.2379) or AISI 52100 material and heat treated to HRC56-58. This type is the best because it is tough and resistant to wear.It also works well and doesn't cost too much for tunnels that are short to medium in length.
2. Hard Rock & Highly Abrasive Formations (UCS 60MPa - 200MPa)
For high-speed railway tunnels, hydropower diversion tunnels, and mining projects facing hard granite, basalt, and other highly abrasive rock formations, our heavy duty forged TBM cutter rings are the best choice material. They are made of H13 (1.2344) or 1.2367 material, with specialized heat treatment to HRC57-59. This type has excellent impact resistance and anti-fracture performance, and they have 30% longer lifetime than standard products in hard rock conditions.
3. Highly Abrasive Non-Hard Ground (UCS < 40MPa, High Abrasiveness)
Our TCI tungsten carbide‑inserted TBM cutter rings are the best choice for long‑distance water diversion tunnels and mining projects encountering highly abrasive yet low‑strength formations such as sandstone and conglomerate.
The tungsten carbide tips have excellent wear resistance, while their contoured profile prevents flattening, ensuring stable rotation and consistent cutting performance in harsh ground conditions.
4. Ultra-Hard Rock & Extreme Conditions (UCS > 200MPa)
For deep-buried mountain tunnels and ultra-hard rock projects, we provide extra heavy-duty forged TBM cutter rings with custom material formulation, multi-stage vacuum heat treatment, and improved profile design, with full performance testing to make sure they can work reliably under extreme impact and abrasion loads.
Advanced Melting & Manufacturing Processes
We provide a full range of service for our forged steel TBM cutter cutting rings, from steel melting, open die forging, precision heat treatment, to final CNC machining, all products are made in-house based on client drawings and international standardsr.Every cutter ring is made in advanced manufacturing processes , so that they have consistent material structure, refined grain size, and consistent mechanical properties.. View our production equipment to learn more.
We offer different advanced melting methods to meet different material performance and purity requirements:
- EAF: Electric Arc Furnace
- EAF+LF+VD: Refined Smelting with Ladle Refining and Vacuum Degassing,vgas content and inclusions are reduced for improved toughness
- EAF+ESR: Electro Slag Remelting, they get ultra-high material purity and consistent structure for extreme heavy-duty applications
- EAF+PESR: Protective Atmosphere Electro Slag Remelting, element oxidation is prevented for high-alloy tool steel
- VIM+PESR: Vacuum Induction Melting with Protective Atmosphere Electro Slag Remelting, they have the highest purity standard for aerospace-grade material
Our precision heat treatment process includes vacuum quenching, cryogenic treatment, and multi-stage tempering, which effectively controls residual stress, optimizes microstructure, and gets the ideal balance between hardness and toughness, maximizing the lifetime of our TBM cutter cutting rings.
Rigorous Quality Inspection & Certification
To make sure every batch of our forged steel TBM cutter cutting rings have the safety and high quality ,we apply a full range of strict tests and inspections based on international ASTM, ASME, and EN standards. All parts are checked with full inspection before delivery:
- Chemical Composition Analysis (ASTM, ASME compliant) with direct reading spectrometer
- Full Mechanical Property Testing at room and high temperature
- Tensile Test (ASTM A370, E8/E8M compliant)
- High Temperature Tensile Test (ASTM E21 compliant)
- Impact Test (ASTM A370, E23 compliant) at low and room temperature
- Stress Rupture Test (ASTM E139 compliant)
- Microstructure Test (ASTM E407 compliant) with metallographic microscope
- Macrostructure Test (ASTM E340, E381 compliant)
- Corrosion Test (ASTM A262, A923, G48 compliant)
- Nondestructive Testing (NDE: UT, PT, MT) (ASTM A388, A745, MIL-STD-2154 compliant)
- 3D Dimensional Inspection with high-precision coordinate measuring machine
- Hardness Testing across the full section of the cutter ring
- EN10204 3.1 / 3.2 Certification Available
For every finished batch of our forged steel TBM cutter cutting rings, we provide a complete, traceable inspection report, including:
- Identification number, material number and designation, order number, drawing number, and specification number
- Heat number, heat chemical analysis, melting method, and finished product chemical analysis
- Full heat treatment certification, including cooling method, actual part temperature, holding time, cooling conditions, and complete temperature-time graphs for all re-heat-treatments
- Nondestructive testing records and NDT inspector certification
- Results of all mechanical tests and residual stress measurements (for process qualification)
- All deviation reports, dimensional and visual inspection report, and cleaning verification record
Global Project Application Cases
Our forged steel TBM cutter cutting rings have been used in more than 500 tunnel infrastructure projects in over 50 countries around the world. They have reliable performance, extended lifetime, and excellent cost savings for our clients around the world. Explore more project references.
Singapore Urban Subway Tunnel Project
Region: Southeast Asia
Working Condition: They worked in 12km underground subway tunnel, mixed ground of soft soil and moderately hard rock
Our Solution: We provided the client 17" standard forged TBM cutter cutting rings, D2 (1.2379) material, HRC56-58 heat treatment
Result: Help client complete project 3 months ahead of schedule. all parts have no abnormal wear or fracture and they have 25% longer lifetime than client's previous products
Malaysia East Coast Railway Tunnel Project
Region: Southeast Asia
Working Condition: They worked in high-speed railway tunnel through abrasive hard granite formations (UCS 120-180MPa)
Our Solution: We provided the client 19" heavy-duty forged TBM cutter rings, H13 (1.2344) material, HRC57-59 specialized heat treatment
Result: excavation efficiency is increased by 22% , lifetime is improved by 30% , cutter replacement downtime is greatly reduced
Australia Water Diversion Tunnel Project
Region: Oceania
Working Condition: They worded in 28km water diversion tunnel, highly abrasive sandstone formations (UCS 30-40MPa)
Our Solution: We provided the client 20" TCI tungsten carbide inserted TBM cutter rings, customized undulating profile
Result: No flat spotting was founed after 18 months of continuous construction, helped client reduce construction cost by 18%
Middle East Urban Pipe Jacking Project
Region: Middle East
Working Condition: They worked in 6km urban underground pipe network, MTBM and pipe jacking equipment, mixed sandy soil
Our Solution: We provided18" custom forged TBM cutter rings, AISI 52100 material, 100% interchangeable with Wirth original parts
Result: There was no quality complaints during construction, and we delivered all parts based on client's schedule
German High-Speed Railway Tunnel Project
Region: Europe
Working Condition: They worked in 8km high-speed railway tunnel, mixed hard rock and fault zones, EN standard compliance required
Our Solution: We provided 19" heavy-duty forged TBM cutter rings, 1.2367 material, EN10204 3.2 certification
Result: They fully met European standard requirements, and had stable performance in fault zones, passed all third-party inspections
Chile Copper Mine Tunnel Project
Region: Latin America
Working Condition: They worked in mining access tunnel, highly abrasive hard rock, high humidity underground environment
Our Solution: We provided the client 17" extra heavy-duty forged TBM cutter rings, customized anti-corrosion heat treatment
Result: The lifetime was extended by 35% and the mining operation costs of the client were reduced significantly
Global Market Compliance & Regional Service Advantages
As a global leading forged TBM cutter rings manufacturer, we provide custom products and service solutions for different regional markets, making sure our products fully meet local regulatory requirements and project needs. We provide fast and reliable support for clients around the world.
European Market
Our forged steel TBM cutter cutting rings fully meet EN, DIN standards, and EN10204 3.1 / 3.2 certification available for all products. We have many project experience in Germany, France, Italy, Poland, and other European countries. We can provide custom products and fast logistics solutions to European ports, making sure all products are on-time delivered .
North American Market
For the United States and Canadian markets, our products fully meet ASTM, ASME standards,and all materials are traceable. We provide custom solutions for North American TBM models including Robbins, and all parts are delivered to North American ports.We also provide local after-sales support, and our products are used in s subway, railway, and mining projects across North America.
Southeast Asia & Oceania Market
With many project experience in Singapore, Malaysia, Indonesia, Australia, and New Zealand, we understand the tropical geology and strict project requirements in this region. We deliver our goods based on clients schedule from our China factory.We also provide clients customized solutions for soft soil, mixed ground, and hard rock formations common in Southeast Asia and Oceania.
Middle East & Africa Market
We have been supplying forged TBM cutter rings to the Middle East and Africa for over 15 years, with extensive experience in large-scale infrastructure projects in Saudi Arabia, UAE, Qatar, Egypt, and South Africa. Our products are used in high temperature, high abrasion and extreme working conditions common in this region. They all meet local project standards and are delivered on time to Middle Eastern and African ports.
Latin American Market
For Brazil, Chile, Peru, Mexico, and other Latin American markets, we provide high cost-effective forged TBM cutter ring solutions, with custom material and heat treatment for mining and hydropower tunnel projects. We have established long-term cooperative relationships with local engineering companies and TBM contractors, providing stable supply and technical support for large-scale infrastructure projects in Latin America.
Customization & Interchangeability
We produce our forged steel TBM cutter cutting rings in standard sizes of 17", 18", 19", and 20", covering standard, heavy-duty, extra heavy-duty, and TCI types. Our TBM cutter rings are 100% dimensionally and performance interchangeable with original cutter rings from world-renowned brands including Herrenknecht, Palmieri, Robbins, and Wirth. They have consistent performance and have been succesfully used in hundreds of projects around the world.
We also accept full custom manufacturing according to client's drawings and technical requirements, and our custom prodution process from forging, heat treatment to machining solutions are made based on your specific project needs. Whether you need custom sizes, special material grades, or optimized profile design for extreme working conditions, our engineering team will provide a professional solution based on your requirements. Browse our full product range.
Engineering Glossary for Buyers
- UCS
- Uniaxial compressive strength of rock. This is one of the main indicators used to delete how demanding the cutting condition will be for a TBM cutter ring.
- TCI
- Tungsten carbide inserted. In this page it refers to cutter rings designed with carbide inserts for highly abrasive formations where wear resistance is a top priority.
- EN10204 3.1 / 3.2
- Inspection document levels commonly requested in industrial procurement to confirm material identity, test results and third-party or manufacturer-backed traceability depending on project specification.
- NDT / NDE
- Non-destructive testing or examination, such as UT, PT and MT, used to inspect for defects without damaging the forged part.
- Interchangeability
- The ability of a replacement ring to match the required dimensions and functional performance of the original component on the cutterhead.
Frequently Asked Questions (FAQ)
What is the lead time for custom forged TBM cutter cutting rings?
For standard size TBM cutter rings in stock, we can arrange delivery within 7 days. For custom production based on clients drawings, the lead time is 20-30 days. And we can speed prodution for urgent orders (10-15 days). the actual lead time depends on material availability and order quantity.
Are your TBM cutter rings meet my Herrenknecht / Robbins TBM?
Yes, our forged TBM cutter cutting rings are 100% dimensionally and performance interchangeable with original cutter rings from Herrenknecht, Palmieri, Robbins, Wirth, and all major TBM brands. All of our parts meet the original drawing specifications, and every batch of products are tested with 3D dimensional inspection, which make sure they have the same consistent performance and can perfect fit with the original parts.
What is the typical lifetime of your TBM cutter rings?
The lifetime of our TBM cutter rings depends on the rock hardness, abrasiveness, and working conditions. In soft to mixed ground, the usual lifetime is 800-1200 hours; in hard rock and highly abrasive formations, the usual lifetime is 400-800 hours. Our heavy-duty cutter rings have 30% longer lifetime than standard industry products in the same working conditions.
What certifications do your TBM cutter rings have?
Our factory is ISO 9001:2015 certified. All our TBM cutter cutting rings meet ASTM, ASME, EN, DIN, JIS international standards. We provide full mill test certificates (MTC) EN10204 3.1 for all products, and EN10204 3.2 third-party certified inspection reports are also available upon request.
Can you produce TBM cutter rings according to our custom drawings?
Yes, we specialize in custom forged TBM cutter rings according to client's drawings and technical requirements. Our engineering team will review your drawings, provide suggestions on material selection and heat treatment recommendations. We can provide a full range of service from forging to final machining, with 100% inspection to make sure all parts meet your drawing specifications.
What is the minimum order quantity (MOQ) for your TBM cutter rings?
For standard size TBM cutter rings, our MOQ is 1 piece, which is suitable for small-scale maintenance and replacement needs. For custom production, our MOQ is different and it depends on the material and size.We surport one piece sample orders for trial and project testing.
Do you provide technical support for TBM cutter ring selection?
Yes, our engineering team provides free professional technical support for cutter ring selection. We will recommend the most suitable material, type, and heat treatment solution based on your project's geology, rock UCS, abrasiveness, and TBM model, to maximize excavation efficiency and service life.
Explore More Forged Products From Jiangsu Liangyi
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Information to send for a faster quotation
- TBM or cutterhead brand/model and ring size
- Ground condition, UCS, abrasiveness and known wear pattern
- Drawing, profile details or interchangeability target brand
- Required quantity, document level and delivery deadline
Jiangsu Liangyi Co., Limited is an ISO 9001:2015 certified professional open die forging manufacturer with over 25 years of experience, we supply high-quality forged steel products to clients in more than 50 countries aroud the world. We will provide clients with high quality forged steel TBM cutter cutting rings at competitive prices, Whether you need standard size cutter rings for replacement, or custom forged cutter rings for your new tunnel project, we are here to provide the most professional solution for you.
Inquiry Email: [email protected]
Phone/WhatsApp: +86-13585067993
Website: https://www.jnmtforgedparts.com
Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, China