Kameyama

What Kameyama does

Kameyama Co., Ltd. (株式会社 亀山) is a privately held Japanese manufacturer founded in 1923, headquartered in Yanagawa/Dazaifu, Fukuoka Prefecture, that specializes in tunnel excavation reinforcement components, drill bits, and custom precision metal machining. Its core product systems are the AGF-OFP tunnel auxiliary method components and the Omni-Bit System, which together cover long-span foreleg reinforcement, foot reinforcement, water drainage, face reinforcement, anchor methods, and double-pipe drilling materials used with shield machines and drill jumbos. A flagship recent innovation, AGF Taft Light™ (a lightweight long-length steel pipe advance support method), is registered in Japan's NETIS database (KT-200072-A) and received the 2022 MITOKUNI Award from the Fukuoka Branch of the Japan Tunnel Construction Association.

The company's underlying technology combines 5-axis CNC machining centers and multi-axis CNC turning with specialized tunnel component manufacturing, supported by two production facilities (the Fukuoka Main Factory in Dazaifu and the Tajimi Factory in Gifu Prefecture). Beyond tunnel reinforcement, Kameyama produces ground improvement bits, tunnel excavation bits, pushing/shield bits, environmental recycling bits, environmental machinery, water treatment equipment, custom jigs, and machined components for liquid crystal panel manufacturing equipment and other industrial machinery.

Kameyama operates a direct enterprise sales model with three regional field-sales divisions — Kyushu (Dazaifu), Kansai (Mie Prefecture), and Kanto (Chiba) — selling custom-quoted, project-priced components directly to major Japanese construction corporations and industrial manufacturers such as Obayashi, Nippon Steel, Bridgestone, Bridgestone Plant Engineering, Mitsubishi Electric Factory Automation, TOTO, Ariake Denshi, Nihon Kiso Gijutsu, Sankin, and Fukunetsu. Revenue is generated per order under bespoke specifications with no public pricing. The company is currently pursuing overseas expansion into Vietnam and Nepal in partnership with JICA (Japan International Cooperation Agency) and received Shinkin Capital investment as part of the Shinkin 'Shinkin no Ishiro' COVID-19 support fund in late 2021/early 2022. Leadership is held by Representative Director Kameyama Motonori, consistent with long-running family control.

Name

Kameyama

Legal name

株式会社 亀山

Website

https://kamenet.co.jp

Company type

Private

Founded year

1923

Operating status

Operating

Short description

Kameyama is a 100-year-old Japanese manufacturer producing tunnel excavation reinforcement components, drill bits, and custom precision metal machined parts for major Japanese construction corporations (Obayashi) and industrial manufacturers (Nippon Steel, Bridgestone, Mitsubishi Electric FA, TOTO).

Ownership category

akta.pro rank

Product category

Tunnel Excavation Components & Precision-Machined Industrial Parts

NAICS

Construction Machinery Manufacturing (333120), Other General Purpose Machinery Manufacturing (3339)

SIC

Construction Machinery & Equip (3531), General Industrial Machinery & Equipment, Nec (3569)

akta.pro primary industry

Attachments & Work Tools (Buckets, Augers, Hammers) (IMAHAAAM)

Keywords

• Tunnel excavation components
• Ground improvement bits
• Precision metal machining
• AGF reinforcement materials
• Custom cutting tools

Headquarters

HQ city

Yanagawa

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Precision Metal Components Manufacturing: Bespoke manufacturing of precision metal components — including tunnel excavation reinforcement parts, shield machine parts, drill jumbo bits, and custom 5-axis/multi-axis CNC machined parts — sold directly to enterprise customers in construction and manufacturing sectors. Revenue is generated per order/project, with custom pricing based on specifications, volumes, and complexity. Long-term relationships with major clients drive recurring project revenue.

Go-to-market motion1 record

Distribution channels1 record

Core offering

Kameyama manufactures and sells tunnel excavation reinforcement components (including the AGF-OFP method materials and Omni-Bit System), a wide range of drilling bits (for ground improvement, tunnel excavation, pushing/shield, and environmental recycling), and custom precision-machined parts and tanks. Products are designed and fabricated in-house using multi-axis CNC machining and supplied directly to enterprise customers in tunneling, civil engineering, and industrial manufacturing.

Product overview

Kameyama is a tunnel excavation reinforcement component and bit manufacturer offering two main product lines: tunnel auxiliary method components (Omnibit System, AGF-OFP method materials, AGF Taft Light) and various bits (ground improvement, tunnel excavation, pushing/shield, environmental recycling). The company also provides custom machining services, jigs and tools, environmental machinery, and water treatment equipment. Products are manufactured using advanced equipment including 5-axis machining centers and CNC lathes, with a focus on custom-made solutions meeting specific customer requirements.

Differentiator

Problem solved

Functional benefit

Products and services

• Omni-Bit System (オムニビットシステム) A proprietary Kameyama-developed bit system used in tunnelling and excavation works to improve drilling efficiency and adaptability across ground conditions. Targeted at Japanese general contractors and tunnelling firms.
• AGF-OFP Method Components (All-Around Pre-Grouting method parts) Reinforcement materials used in the AGF-OFP (全周先行削孔) pre-grouting method for stabilizing tunnel excavation faces. Sold to construction firms executing shield and mountain tunnel projects where face stability is critical.
• AGF Taft Light (AGFタフトライト) A Kameyama-developed friction-stroke AGF reinforcement product that complements the AGF-OFP method, used in tunnelling applications to enhance face reinforcement where conventional AGF methods are deployed.
• Ground Improvement Bits (地盤改良用ビット) Drilling bits designed for ground-improvement works such as soil-cement columns and soil-mixing improvement projects. Sold to construction firms carrying out soft-ground improvement prior to or during excavation.
• Tunnel Excavation Bits (トンネル掘削用ビット) Drilling bits engineered for excavating tunnels, including TBM-style and drill-and-blast applications. Supplied to construction and tunnelling firms executing mountain-tunnel and underground excavation projects.
• Pushing / Shield Bits (推進・シールド用ビット) Bits designed for pipe-jacking (推進) and shield tunnelling (シールド) operations, used on the cutterheads of microtunnelling and shield machines. Targeted at shield-tunnelling contractors.
• Environmental Recycling Bits (環境リサイクル用ビット) Specialized bits used for environmental-recycling applications such as processing recycled aggregate or contaminated soil handling. Targeted at construction-recycling and environmental remediation contractors.
• Custom Machining & Tank Manufacturing (各種機械加工・製缶) Contract-manufacturing service providing custom metal machining and tank/can fabrication on multi-axis CNC equipment. Targeted at industrial manufacturers needing precision-machined components and fabricated tanks/jigs.
• Jigs and Tools (治工具) Manufacture of industrial jigs and tools used to support other manufacturers' production lines. Targeted at industrial manufacturers requiring purpose-built fixtures and tooling.
• Environmental Machinery (環境機械) Machinery designed and fabricated for environmental applications, including recycling and remediation equipment housings/components. Sold to environmental-engineering contractors and recycling operators.
• Water Treatment Equipment (水処理装置) Equipment produced for water-treatment applications, fabricated in-house. Targeted at water-treatment operators and environmental-engineering firms.

Quantifiable outcome

• AGF Taft Light™ received the 2022 MITOKUNI Award from the Fukuoka Branch of the Japan Tunnel Construction Association
• +1 more outcomes

Named customers12 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• JICA (Japan International Cooperation Agency / 国際協力機構)coreStrategic or Co-development PartnerKameyama is working with JICA for overseas expansion, targeting Vietnam and Nepal. JICA supports Japanese companies' international development activities, providing backing for Kameyama's efforts to expand its tunnel construction component and precision metal machining business into Southeast Asian and South Asian markets.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Caterpillar Inc. Global construction and mining equipment giant offering tunneling and excavation equipment at massive scale. Overlaps with Kameyama's drill bit and component offerings but as part of a much broader portfolio.
• Sumitomo Heavy Industries, Ltd. Japanese diversified industrial machinery manufacturer with construction equipment and precision components divisions — overlaps with Kameyama's industrial machinery customer base and precision parts business.
• JFE Engineering Corporation: Japanese engineering and construction firm active in tunneling, bridge, and infrastructure projects — comparable to Kameyama's customer base of major Japanese construction and infrastructure players.
• IHI Corporation: Japanese heavy industry conglomerate active in infrastructure, including tunneling and bridge construction — adjacent player in Japan's tunnel construction ecosystem and shares similar blue-chip customer relationships.

Direct peers

• Hitachi Construction Machinery Co., Ltd. Japanese construction and mining equipment manufacturer including hydraulic excavators and tunneling machines — directly comparable to Kameyama in Japanese construction equipment and parts supply.
• Herrenknecht AG: German global leader in tunnel boring machines (TBMs) and shield machines — directly comparable to Kameyama's shield machine component business and serves the same tunnel construction customer base.
• Komatsu Ltd. Japanese global leader in construction, mining, and tunneling equipment, including shield machines and drill bits — direct competitor to Kameyama in the Japan tunnel construction market and broader Japanese construction equipment customer base.
• Epiroc AB: Swedish mining and infrastructure equipment manufacturer producing drilling tools, rock excavation equipment, and tunneling components — directly competes with Kameyama in drill bits and rock reinforcement products.
• Robit Plc: Finnish drill bit manufacturer for mining, construction, and tunneling — direct competitor in the drill bits segment that forms a core part of Kameyama's product portfolio.
• Sandvik AB: Swedish multinational with a major mining and rock processing division that manufactures drill bits, rock tools, and tunneling equipment. Directly competes with Kameyama in tunnel drill bits and reinforcement components, especially as it expands in Asia.

Market position

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kameyama