株式会社青山製作所

What 株式会社青山製作所 does

Aoyama Manufacturing Co., Ltd. is a Japanese cutting tool manufacturer and a wholly-owned subsidiary of OSG Corporation, headquartered in Toyokawa, Aichi Prefecture. The company operates four core business lines: (1) OSG-certified re-grinding and re-coating services for cutting tools (drills, end mills, taps); (2) distribution of WIKUS (German band saw brand with over 60% European market share) and Bichamp (Chinese) band saw blades, plus proprietary circular saw blades (metal, chip, and segmental saws); (3) precision bit and driver manufacturing using a proprietary cold forging process, producing cross bits and bits for OSG's patented LH Stix threaded screw; and (4) custom parts processing using Citizen automatic lathes (L32, L12) and grinding machines. The company serves manufacturing and metalworking customers—primarily machine shops and metal fabrication companies—through direct field sales across the Aichi/East Mikawa region.

The company's technology stack centers on precision grinding and surface engineering. It operates a HELITRONIC VISION 400 L precision tool grinder (installed August 2024), CNC machine tools for re-grinding, and three-dimensional edge measurement equipment that numerically manages cutting edge geometry for high reproducibility. Its proprietary AO surface treatment combines edge honing (micro-rounding to suppress wear and chipping) and polishing (smoothing for chip evacuation), applicable to tool diameters Ø3 to Ø32 in cemented carbide and high-speed steel. Documented case studies show tool life improvements of 175% (cemented carbide end mills, S15C material) and 33% (cemented carbide drills, SCM420H material) following AO treatment. The company has held OSG's Ultra-Hard Drill Quality Certification since 2010, authorizing it to apply OSG-quality re-grinding standards.

Aoyama Manufacturing operates three manufacturing sites: Toyokawa headquarters, Miyama Factory (Toyokawa), and Shinshiro Factory (expanded 2021). With 91 employees as of October 2024 and three-shift alternating operations, the company runs a relationship-driven direct sales model targeting local/regional manufacturing customers. Sales staff are organized regionally and provide after-sales service, complaint handling, and new product introductions. Representative Director Hamayu Yasuo (浜武 恭生) leads the company. Revenue is not publicly disclosed.

Name

株式会社青山製作所

Legal name

株式会社青山製作所

Website

https://aoyamass.co.jp

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

1–10 employees

Short description

Aoyama Manufacturing Co., Ltd. is a Japanese cutting tool manufacturer and wholly-owned OSG Group subsidiary operating three factories in Aichi Prefecture. It provides OSG-certified re-grinding/re-coating services, distributes WIKUS and Bichamp band saw blades, and manufactures precision cold-forged bits and custom parts for regional manufacturing and metalworking customers.

Ownership category

akta.pro rank

Product category

Cutting Tools & Re-Grinding Services

NAICS

Cutting Tool and Machine Tool Accessory Manufacturing (333515), Machine Tool Manufacturing (333517), Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers (332812)

SIC

Machine Tools, Metal Cutting Types (3541), Coating, Engraving & Allied Services (3470), Metalworkg Machinery & Equipment (3540)

akta.pro primary industry

Metal Cutting Tools, Tooling & Workholding (Cutters, Inserts, Chucks, Fixtures) (IMAHADAB)

akta.pro secondary industries

Industrial Saws & Cutting Systems (Band/Circular Saws, Abrasive Cutting) (IMAHADAL), Surface Treatment & Finishing Equipment (Coating, Plating, Deburring, Shot Blasting) (IMAHADAJ)

Keywords

• Cutting tool manufacturing
• Tool regrinding services
• Surface coating treatment
• Band saw blades
• Precision tooling solutions

Headquarters

HQ city

Toyokawa (豊川市)

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Cutting Tool Re-Grinding and Re-Coating: Re-grinding and re-coating services for OSG cutting tools (drills, end mills, taps) using OSG's proprietary design, coating technology, and quality management standards. Restores cutting performance and extends tool life, delivering productivity improvements and cost reduction for customers. Includes the AO処理 (AO surface treatment) service for edge stabilization and tool life extension.
2. Band Saw and Circular Saw Blade Sales: Sale of band saws (band saw blades) and circular saw blades (metal saws, chip saws, segmental saws). Products sourced from WIKUS (German brand with 60%+ European market share, offering bimetal M42, X3000, carbide, and electroplated diamond blades) and Bichamp (cost-competitive Chinese brand). Also handles portable band saw replacement blades.
3. Bit and Driver Manufacturing and Sales: Manufacturing and sales of precision bits and drivers using proprietary cold forging process. Products include cross bits and bits for LH Stix threaded screw applications.
4. Parts Processing (部品加工): Custom parts processing services using automatic lathes and grinding machines to produce round metal components. Accepts both mass production and small-lot orders. Equipment includes CITIZEN L32, CITIZEN L12, KNC-100G.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

株式会社青山製作所 manufactures and re-grinds/re-coats precision cutting tools and supplies band saw blades, circular saw blades, and driver bits/end mills to metalworking manufacturers. The company operates three factories in the Aichi/Toyokawa region, applying its proprietary AO Surface Treatment coating and cold-forging know-how to extend tool life and reduce customer tooling costs.

Product overview

株式会社青山製作所 is a comprehensive cutting tool manufacturer and OSG Group company offering four core product categories: (1) Re-grinding and recoating services for drills, end mills, and taps using OSG-certified quality standards; (2) Band saw blades from WIKUS (European market leader with 60%+ share) and Bichamp (cost-competitive); (3) Circular saw blades including metal saws, chip saws, and segmental saws; and (4) Precision bits and drivers produced via cold forging technology. The company also provides solution services including AO処理 (edge honing and polishing surface treatment), オプティマイズ (tool specification optimization), and parts processing. Founded in 1986 and headquartered in Toyokawa, Aichi, with 91 employees across three factory locations.

Differentiator

Problem solved

Functional benefit

Products and services

• Re-Grinding and Re-Coating Service
• AO Surface Treatment (Coating Service)
• Band Saw Blades (WIKUS / Bichamp)
• Circular Saw Blades
• Driver Bits and End Mills
• Optimize Tooling Solution
• Parts Processing Service
• Exhibition Prototype Manufacturing

Quantifiable outcome

• Tool life improved by 175% — cemented carbide raking end mill Φ22×R3 (S15C material) extended from ~400 workpieces to 700+ workpieces after AO edge honing treatment
• +2 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered flagship and core.

• OSG Corporation (オーエスジー株式会社)flagshipStrategic or Co-development Partner · 1 January 1986OSG is the parent/group company of Aoyama Manufacturing. In 1986, OSG acquired Aoyama Manufacturing (then a Tokyo-based bit manufacturer) to start cross-bit production and develop bits for OSG's global patented LH Stix threaded screw. OSG provides cutting tool design, coating technology, tool engineering expertise, and human resources that Aoyama leverages for its re-grinding services. Aoyama operates as OSG's designated manufacturer re-grinding facility and sells OSG's band saw products (WIKUS brand).
• WIKUS (ヴィクス)coreChannel Partner/ Reseller/ DistributorAoyama Manufacturing distributes WIKUS brand band saws in Japan. WIKUS is a German manufacturer with 60%+ market share in Europe. Product range includes bimetal M42, X3000, carbide, and electroplated diamond band saws for high-speed cutting and difficult material applications. Aoyama also handles WIKUS portable band saw replacement blades. WIKUS business was transferred to Aoyama Manufacturing in 1999.
• Bichamp (ビchamp)coreChannel Partner/ Reseller/ DistributorAoyama Manufacturing distributes Bichamp brand band saws as a cost-competitive alternative to WIKUS. Bichamp is a Chinese manufacturer with professional R&D and manufacturing capabilities. Their products offer cost reduction benefits for customers seeking lower initial costs. Aoyama holds inventory of Bichamp products including M42 FICUT domestic stock items.

Scale indicators4 records

Recent moves3 records

Expansion highlights4 records

Broad incumbents

• Kennametal Inc. Global supplier of metal cutting tools and wear-resistant products. Comparable to Aoyama in metal cutting tool offerings and industrial customer base, with extensive re-grinding/recoating service operations of its own.
• Sandvik Coromant: Global leader in metal cutting tools within Sandvik AB. Comparable to Aoyama in core metal cutting tooling (drilling, milling, turning) and in offering productivity-oriented services; substantially larger and globally distributed.
• Mitsubishi Materials Corporation: Major Japanese materials and industrial conglomerate with a global cutting tools business (Dijet, MMC Hardmetal). Comparable as a competitor in metal cutting tools serving Japanese manufacturers, though much larger and more diversified.
• Nachi-Fujikoshi Corp. Diversified Japanese industrial manufacturer with a significant cutting tools division producing drills, end mills and taps. Comparable to Aoyama as a Japan-based cutting tool producer, but operating at much larger scale across multiple industrial segments.

Direct peers

• Tungaloy Corporation: Japanese cutting tool manufacturer (now part of IMC Group) producing turning, milling and drilling tools with a global footprint. Comparable to Aoyama as a Japan-anchored cutting tool specialist serving metalworking customers.
• Union Tool Co. Japanese precision cutting tool manufacturer specializing in drills, end mills and related rotary cutting tools. Comparable to Aoyama in product category (small-diameter precision drills and milling cutters) and customer base (Japanese machine shops).
• Starrett (L.S. Starrett Company): U.S.-based manufacturer of saw blades, precision tools and metrology equipment. Comparable to Aoyama in the band saw and circular saw blade distribution/franchise side of the business, and adjacent in cutting tool categories.
• OSG Corporation: OSG is Aoyama's parent company and the leading global cutting tool manufacturer. Both companies share the same core business (drills, end mills, taps) and Aoyama operates as OSG's certified re-grinding arm, so OSG is the most directly comparable peer and the benchmark for Aoyama's product, technology and quality standards.
• Niko Tool Co., Ltd. Specialized Japanese drill manufacturer producing small-diameter and high-precision drills for machining applications. Highly comparable to Aoyama's drill-centric re-grinding and AO treatment service offering.

Emerging players

• YG-1 Co., Ltd. Korean cutting tool manufacturer with rapidly growing global share in drills, taps, end mills and tooling. Comparable to Aoyama in product category and serves overlapping customer profiles in Japanese and Asian machine shops at competitive price points.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E9%9D%92%E5%B1%B1%E8%A3%BD%E4%BD%9C%E6%89%80

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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 →

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