Koken Boring Machine
Koken Boring Machine is a Tokyo-based Japanese manufacturer of specialized boring machines and provider of underground-development engineering services, including drilling rigs, hot spring/groundwater development, environmental remediation, and large-diameter rock excavation, selling to construction firms, government agencies, and ODA-funded overseas projects.
- Company typePublic
- Founded1926
- HeadquartersTokyo, Japan
- Headcount251–500
- GTM typeB2B
- OfferingHardware or Manufacturing
What Koken Boring Machine does
Koken Boring Machine Co., Ltd. (鉱研工業株式会社) is a Tokyo-based Japanese specialty manufacturer of boring machines and a provider of underground-development engineering and construction services. Founded in 1926 and operating as a privately held subsidiary of Hulic Co., Ltd. following its November 2025 delisting from the Tokyo Stock Exchange Standard Market, the company maintains a 12-product-series hardware portfolio spanning geological survey machines, rotary percussion drills (RPD), the flagship large-diameter rock boring Bigman series, power swivel systems, ground improvement machines, hot spring/groundwater boring rigs (OC series), truck-mounted water well machines (TMM), fully automatic mortar batching plants (ZMBP), grout pumps/mixers (GPM), rod handling systems, construction recording devices/flow meters, and drilling tools.
Koken generates revenue through two primary streams: (1) the manufacture and direct sale of specialized boring machinery and drilling tools to construction companies, government agencies, and infrastructure developers (hardware sales), and (2) engineering and construction services delivered through dedicated business lines covering hot spring development, groundwater utilization, environmental soil contamination investigation/remediation, large-diameter rock excavation, Bigman rock-mole tunneling, PS wireline sampling, dynamic penetration testing, geothermal energy systems, ODA-funded overseas water well drilling, and micro-pile installation (professional services). The company's proprietary PS Wire Line Sampling Method has received the Notable Invention Award from the former Ministry of Science and Technology and is considered essential for tunnel front surveys.
The firm's go-to-market is sales-led, B2B, and conducted through direct engagement with construction firms, engineering companies, government bodies, and development-assistance entities in Japan and overseas. Customer concentration sits primarily in domestic construction/infrastructure enterprise buyers and Japanese government ODA channels. The company operates subsidiaries Avix Co., Ltd. (environmental remediation, acquired February 2025) and Christensen-Mikai Co., Ltd. (acquired October 2022), maintains capital and business partnerships with EnBio Holdings and EnBio Engineering for soil contamination services, and runs the 'Jwelhako' mineral museum in Shiojiri, Nagano. Per the most recently disclosed series, revenue has recovered to roughly ¥70.8 billion in 2025 after a 2022 trough, with EBITDA around ¥6.3 billion.
Koken Boring Machine firmographics
Firmographics- Name
- Koken Boring Machine
- Legal name
- 鉱研工業株式会社
- Website
- https://koken-boring.co.jp
- Company type
- Public
- Founded year
- 1926
- Operating status
- Acquired
- Headcount range
- 251–500 employees
- Short description
- Koken Boring Machine is a Tokyo-based Japanese manufacturer of specialized boring machines and provider of underground-development engineering services, including drilling rigs, hot spring/groundwater development, environmental remediation, and large-diameter rock excavation, selling to construction firms, government agencies, and ODA-funded overseas projects.
- Ownership category
- akta.pro rank
Koken Boring Machine industry classification
Industry- Product category
- Drilling Equipment
- NAICS
- Agriculture, Construction, and Mining Machinery Manufacturing (3331), Mining and Oil and Gas Field Machinery Manufacturing (33313)
- SIC
- Construction Machinery & Equip (3531)
- akta.pro primary industry
- Drilling Rigs & Drill Systems (IMAHAMAA)
- akta.pro secondary industries
- Shaft Sinking, Raise Boring & Underground Development Works (IMAKAOAC), Underground Mining Equipment (Loaders/LHDs, Continuous Miners, Longwall Systems) (IMAKANAB)
Keywords
Where Koken Boring Machine is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices2 records
Markets served
Koken Boring Machine business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales
Revenue model
- Manufacturing and Sale of Boring Machines: Manufacturing and selling specialized boring machines including geological survey machines, rotary percussion drills, power swivel types, ground improvement machines, hot spring/groundwater drilling machines, track-mounted well machines, and drilling tools.
- Engineering and Construction Services: Engineering services including hot spring development, groundwater utilization, environmental business, large-diameter rock excavation, tunnel sampling, dynamic penetration testing, overseas water well projects, rock mole tunneling, geothermal energy, and micro-pile construction.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels2 records
Koken Boring Machine product offering
Product offeringCore offering
Koken Boring Machine manufactures specialized boring machines and drilling equipment (geological survey machines, rotary percussion drills, large-diameter rock boring machines, ground improvement machines, hot spring/groundwater boring machines, truck-mounted water well rigs, mortar batching plants, grout pumps, drilling tools) and provides underground development engineering and construction services including hot spring development, groundwater utilization, environmental remediation, large-diameter rock excavation, PS wire line sampling, dynamic penetration testing, ODA overseas water well projects, rock mole tunneling, geothermal energy systems, and micro-pile foundation installation.
Product overview
Koken Boring Machine (鉱研工業株式会社) is a manufacturer of specialized boring machines and drilling equipment for underground development. The company offers a comprehensive portfolio of drilling machines organized into product series: geological survey machines (地質調査機シリーズ), rotary percussion drills (ロータリーパーカッションドリルシリーズ), the flagship large-diameter rock boring Big Man series (大口径岩盤掘さく機ビッグマンシリーズ), power swivel systems (パワースイベルタイプシリーズ), ground improvement machines (地盤改良機シリーズ), hot spring/groundwater boring machines (温泉/地下水掘さく機シリーズ), truck-mounted water well machines (トラックマウント水井戸機シリーズ), fully automatic mortar batching plants (全自動モルタルバッチャープラントシリーズ), grout pumps and mixers (グラウトポンプ/ミキサーシリーズ), construction recording devices and flow meters (施工記録装置/流量計), drilling tools (ドリリングツールス), and rod handling systems (ロッドハンドリングシステム鷲掴みシリーズ). Beyond equipment manufacturing, the company provides engineering and construction services including hot spring development, groundwater utilization, environmental remediation, large-diameter rock excavation, PS wireline sampling, dynamic penetration testing, overseas water well projects via ODA, Big Man Rock Mole tunneling, geothermal energy systems, and micropile foundation installation.
Differentiator
Problem solved
Functional benefit
Brands
- ビッグマンシリーズ (Bigman Series): Large-diameter rock drilling machine series
- ロータリーパーカッションドリルシリーズ (RPD Series)
- 地質調査機シリーズ
- 全自動モルタルバッチャ-plantシリーズ (ZMBP Series)
- 温泉/地下水掘さく機シリーズ (OC Series)
- 罗德ハンドリングシステム鷲掴みシリーズ
- パワースイベルタイプシリーズ (FS Series)
- 地盤改良機シリーズ (FSG Series)
- トラックマウント水井戸機シリーズ (TMM Series)
- グラウトポンプ/ミキサーシリーズ (GPM Series)
- 施工記録装置/流量計シリーズ (SR Series)
- ドリリングツールスシリーズ (DT Series)
Products and services
- Geological Survey Machine Series (地質調査機シリーズ) Geological survey machines designed for subsurface investigation and ground analysis, used by construction and engineering firms for site characterization.
- Rotary Percussion Drill Series (ロータリーパーカッションドリルシリーズ) Rotary percussion drilling machines designed for various ground conditions, used in geotechnical and construction drilling applications.
- Large-Diameter Rock Boring Machine Big Man Series (大口径岩盤掘さく機ビッグマンシリーズ) Large-diameter rock boring machines for excavation projects, representing the company's flagship product line and a historically significant business area.
- Power Swivel Type Series (パワースイベルタイプシリーズ) Power swivel equipment used in drilling operations to drive and rotate drill strings.
- Ground Improvement Machine Series (地盤改良機シリーズ) Machines for ground improvement and stabilization work in construction and infrastructure projects.
- Hot Spring/Groundwater Boring Machine Series (温泉/地下水掘さく機シリーズ) Specialized boring machines for hot spring and groundwater exploration and extraction, used by hot spring developers and water resource projects.
- Truck-Mounted Water Well Machine Series (トラックマウント水井戸機シリーズ) Mobile truck-mounted water well drilling machines used for water well construction domestically and in ODA overseas development projects.
- Fully Automatic Mortar Batching Plant Series (全自動モルタルバッチャープラントシリーズ) Automated mortar mixing and batching plants used in construction and ground improvement applications.
- Grout Pump/Mixer Series (グラウトポンプ/ミキサーシリーズ) Equipment for grout mixing and pumping used in construction and ground improvement works.
- Drilling Tools (ドリリングツールス) Various drilling tools and consumables for boring operations, including bits and related accessories.
- Hot Spring Development Engineering Services End-to-end engineering services for hot spring development projects, including planning, site investigation, and drilling; provided to hot spring developers and resort operators.
- Groundwater Utilization Engineering Services Engineering services combining groundwater with membrane filtration systems and deep groundwater utilization systems to reduce water costs and enable sustainable groundwater resource management.
- Environmental Remediation Services Investigation equipment development, contamination surveys, and purification measures for soil pollution issues; provided in collaboration with EnBio Engineering.
- Large-Diameter Rock Excavation Construction Services Construction services for large-diameter rock excavation projects, including tunnel construction and underground infrastructure installation; one of the company's representative engineering businesses.
- PS Wire Line Sampling Method (PSワイヤラインサンプリング工法) A specialized tunnel front survey method developed by Koken Boring Machine; awarded the Notable Invention Award by the former Ministry of Science and Technology, and now essential for tunnel front surveys.
- Dynamic Penetration Testing (動的貫入試験) Geological hardness survey method leveraging the company's compact rotary percussion machine technology to provide quick and accurate ground assessment for construction and tunneling projects.
- ODA Overseas Water Well Drilling Services Supply of water well drilling machines and construction of water and sewerage facilities for developing countries under Japan's ODA (Official Development Assistance) framework.
- Big Man Rock Mole Method (ビッグマンロックモール工法) Application of large-diameter rock boring technology horizontally for excavating horizontal tunnels to install infrastructure such as water pipes and cables.
- Geothermal/Underground Heat Utilization Services Engineering services for geothermal energy and underground heat utilization systems, providing renewable energy solutions using subsurface thermal resources.
- Small-Diameter Steel Pipe Pile Method (Micro-Pile) Micro-pile foundation installation services using small-diameter steel pipe piles for foundation reinforcement in construction projects.
Companies that use Koken Boring Machine
Customer profileNamed customers2 records
Segments6 records
Ideal customer profiles4 records
Koken Boring Machine technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Koken Boring Machine partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- EnBio Holdings (株式会社エンバイオ・ホールディングス)coreCapital and business partnership agreement. EnBio Holdings' subsidiary EnBio Engineering collaborates with Koken Boring Machine for soil contamination countermeasure services, providing higher quality services through this partnership. EnBio Engineering is the only listed company among specialized environmental companies, offering services including contaminated land acquisition (41 cases), contamination risk acceptance, and land utilization consulting.
- EnBio Engineering (株式会社エンバイオ・エンジニアリング)coreProvides soil contamination investigation and countermeasures as a specialized subsidiary of EnBio Holdings. Collaborates with Koken Boring Machine to offer comprehensive soil contamination solutions with high-quality services.
Scale indicators1 record
Recent moves7 records
Expansion highlights6 records
Koken Boring Machine competitors and assessment
Company assessmentBroad incumbents
- Liebherr: Diversified heavy-equipment manufacturer including foundation/drilling rigs and crawler cranes — broader incumbent serving the same construction-infrastructure customer base as Koken.
- Komatsu: Global diversified construction and mining equipment OEM with drilling/excavation product lines — broader incumbent competing with Koken in tunneling, foundation and mining-site equipment.
- Sumitomo Heavy Industries: Japanese industrial group with construction-mechanical and infrastructure-related product lines — domestic incumbent with overlapping construction-equipment distribution channels and customer relationships in Japan.
- Atlas Copco: Global industrial-tool and compressor manufacturer with dedicated mining/construction drilling divisions — broad incumbent in rock drilling, geotechnical drilling and ground-engineering equipment.
- Epiroc: Global mining and infrastructure productivity provider offering rock-drilling and ground-engineering equipment — competes with Koken's large-diameter rock-boring and underground-development product lines internationally.
- Sandvik: Global engineering group with mining and rock-processing equipment including drilling tools — peer in drilling machinery, drilling tools, and ground-improvement equipment.
Direct peers
- Boart Longyear: Global drilling-services and equipment provider for mining and exploration — directly comparable in drilling-rig manufacturing, drilling tools and consumables used for geological investigations and resource drilling.
- Furukawa Rock Drill: Japanese manufacturer of rock drills, crawler drills and blasthole drills used in mining and construction — directly comparable as a domestic Japanese specialist in drilling equipment serving mining and construction customers.
- Junttan: Finnish piling and drilling-rig manufacturer focused on foundation work — directly comparable niche peer in heavy foundation/drilling rigs for infrastructure and construction.
- Bauer Group: German specialist foundation-engineering equipment manufacturer offering piling, drilling and ground-improvement rigs — directly comparable in micro-pile foundations, ground improvement and specialized drilling rigs.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Koken Boring Machine social profiles
Digital presenceKoken Boring Machine financial estimates
Financial estimateRevenue estimate
Valuation estimate
Koken Boring Machine leadership team
Management profileNumber of profiles
Koken Boring Machine subsidiaries and ownership
Company hierarchySubsidiaries2 records
Koken Boring Machine funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Koken Boring Machine M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Koken Boring Machine
What does Koken Boring Machine do?
Koken Boring Machine manufactures specialized boring machines and drilling equipment (geological survey machines, rotary percussion drills, large-diameter rock boring machines, ground improvement machines, hot spring/groundwater boring machines, truck-mounted water well rigs, mortar batching plants, grout pumps, drilling tools) and provides underground development engineering and construction services including hot spring development, groundwater utilization, environmental remediation, large-diameter rock excavation, PS wire line sampling, dynamic penetration testing, ODA overseas water well projects, rock mole tunneling, geothermal energy systems, and micro-pile foundation installation.
Is Koken Boring Machine a public or private company?
Koken Boring Machine is a public company. It is classified as corporate owned and is currently acquired.
When was Koken Boring Machine founded?
Koken Boring Machine was founded in 1926. It employs 251 to 500 people.
Where is Koken Boring Machine based?
Koken Boring Machine is headquartered in Tokyo, Japan, in the Asia region.
How does Koken Boring Machine make money?
Two revenue lines are on record. Manufacturing and Sale of Boring Machines are the primary driver. The others are engineering and Construction Services.
Who are Koken Boring Machine's main competitors?
Broad incumbents on record are Liebherr, Komatsu, Sumitomo Heavy Industries, Atlas Copco, Epiroc and Sandvik. Direct peers are Boart Longyear, Furukawa Rock Drill, Junttan and Bauer Group.
Does Koken Boring Machine have an API?
No public API is recorded for Koken Boring Machine.
What industry is Koken Boring Machine in?
Koken Boring Machine's product category is Drilling Equipment. Its primary akta.pro industry code is IMAHAMAA, Drilling Rigs & Drill Systems, with a secondary code of IMAKAOAC, Shaft Sinking, Raise Boring & Underground Development Works. Its NAICS code is 3331 and its SIC code is 3531.