Sanwa Seiki Co.

What Sanwa Seiki Co. does

Sanwa Seiki Co., Ltd. (三和精機株式会社), founded in 1954 and headquartered in Nagoya, Japan, operates a dual business model as both a specialized trading company for machine tools and precision cutting tools and an in-house machine manufacturer. The company distributes precision cutting tools (hob cutters, drills, endmills, taps, PCD/CBN tools), machine tools (machining centers, NC lathes, grinders, gear processing machines), measuring instruments, jigs/dies, and environmental equipment—leveraging its 2001 affiliation with OSG Corporation (a global precision cutting tool leader) for product procurement and global reach. Concurrently, the Shiga Manufacturing Division designs and produces original equipment including the SHF08 7-axis CNC Small Hobbing Machine, SWP Grindstone Molding Machine, and SHS202 Hob Sharpening Machine, and provides machine tool overhaul and retrofit services (over 1,360 machines restored to date).

Revenue is generated through one-time hardware sales of distributed and original equipment, project-based overhaul/retrofit contracts (customers ship aging machines to the Shiga factory for restoration or NC modernization), and maintenance services for BMI (France) vacuum heat treatment furnaces, which Sanwa Seiki exclusively distributes in Japan. FY2023 revenue was ¥10.9 billion (~US$70-75M), generated across 665 sales-partner companies in Japan, Thailand, China, and Indonesia through a direct field-sales model with 18 locations (13 domestic organized into Eastern/Central/Western Sales Departments, plus 5 overseas). Customer segments span automotive Tier 1/2 suppliers, gear manufacturers, and general machining shops, with pricing determined via custom quotation per machine specification and project scope. The company is a wholly-owned subsidiary of OSG Corporation, led by President Toshihiro Hisadome.

Name

Sanwa Seiki Co.

Legal name

三和精機株式会社

Website

https://sanwa-seiki.co.jp

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

101–250 employees

Short description

Sanwa Seiki Co. (founded 1954, Nagoya) is a Japanese specialized trading company and machine manufacturer, distributing precision cutting tools and machine tools while producing original gear-processing equipment (SHF08 hobbing machine, SWP, SHS202) and providing overhaul/retrofit services. Wholly-owned subsidiary of OSG Corporation; FY2023 revenue ¥10.9B; serves automotive and general manufacturing customers across Japan, Thailand, China, and Indonesia.

Ownership category

akta.pro rank

Product category

Machine Tools

NAICS

Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612), Other General Purpose Machinery Manufacturing (3339)

SIC

Machine Tools, Metal Cutting Types (3541), Metalworkg Machinery & Equipment (3540), Industrial Process Furnaces & Ovens (3567)

akta.pro primary industry

Spindles & High-Speed Drives (Machine Tool Spindles, High-speed Motors) (IMAGACAL)

akta.pro secondary industry

Systems Engineering & Technical Program Management (BPAHAIAI)

Keywords

• Machine tools
• Precision cutting tools
• Gear machining equipment
• Vacuum heat treatment furnaces
• Machine tool overhaul

Headquarters

HQ city

Nagoya

HQ country

Japan

HQ region

Asia

Offices17 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Trading (distribution) of machine tools and precision cutting tools: Sanwa Seiki acts as a specialized trading company distributing precision cutting tools, tooling, machine tools, measuring instruments, environmental equipment, and jigs/dies from various domestic and overseas manufacturers. Revenue is generated through the sale of these products to manufacturing customers. The company is a member of the OSG Group and leverages OSG's product lineup and brand.
2. Machine tool overhaul and retrofit services: The manufacturing division (Shiga Manufacturing) restores aging machine tools to original specifications (overhaul) or upgrades them with new functions/NC systems (retrofit). Customers ship their existing machines to the Shiga factory for inspection, disassembly, repair, reassembly, and testing. Services include electrical system renewal. Revenue is project-based per machine.
3. Original machine tool manufacturing and sales: Development and sale of proprietary original products including the SHF08 small hobbing machine, SWP grindstone molding machine, and SHS202 hob cutting machine. Machines are sold as complete equipment with various customization options. Production takes place at the Shiga Manufacturing facility.
4. BMI vacuum heat treatment furnace sales and maintenance: Exclusive distribution and maintenance services for BMI (France) vacuum heat treatment furnaces in Japan, including gas quenching furnaces, oil quenching furnaces, tempering furnaces, nitriding furnaces, and associated process control software. Revenue from furnace sales and ongoing maintenance contracts.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Sanwa Seiki operates as a hybrid specialized trading company and in-house machine manufacturer, distributing precision cutting tools, machine tools, measuring instruments, jigs/dies, and environmental equipment from third-party manufacturers (primarily via OSG Group), while also developing and producing its own original machine tools such as the SHF08 small hobbing machine, SWP grindstone molding machine, and SHS202 hob sharpening machine at its Shiga Manufacturing Division. The company also provides overhaul and retrofit services for aging machine tools and is the exclusive Japanese distributor for BMI (France) vacuum heat treatment furnaces.

Product overview

Sanwa Seiki Co. operates as both a specialized trading company and machine tool manufacturer, offering a comprehensive portfolio of precision cutting tools, machine tools, measuring instruments, environmental equipment, and BMI vacuum heat treatment furnaces. The company's proprietary original products include the SHF08 Small Hobbing Machine (7-axis CNC compact gear processing), SWP Grindstone Molding Machine (rapid wheel forming), and SHS202 Hob Sharpening Machine, which complement its overhaul and retrofit services for gear processing and grinding machines. The trading division handles cutting tools, jigs/dies, gauges, and environmental equipment from various manufacturers.

Differentiator

Problem solved

Functional benefit

Products and services

• SHF08 Small Hobbing Machine (SHF08 小型ホブ盤) Proprietary 7-axis CNC small hobbing machine featuring ultra-compact design (~30% space reduction), max hob rotation 9,000 min⁻¹, workpiece rotation 1,500 min⁻¹, NC tailstock with torque control, supports module 0.3-2.5 and up to 80mm workpiece diameter. Designed for precision gear processing manufacturers.
• SWP Grindstone Molding Machine (SWP 砥石成形機) NC grindstone/grinding wheel forming machine that forms grinding wheels in approximately 10 minutes (rotary dresser) or up to 50 minutes (solid wheels), versus ~1.5 months for a new manufacturer order. Handles module 0.1-10, max outer diameter 400mm, max width 230mm, up to 7-tooth, max mounting weight 45kg. For grinding wheel preparation in metalworking operations.
• SHS202 Hob Sharpening Machine (SHS202 ホブ刃付け盤) Compact hob sharpening machine approximately 30% smaller and ~25% lower cost than conventional models. Uses wet CBN creep grinding achieving Rmax 1.5μm surface roughness. Finishes 150L 12-gash hob in 17 minutes. Wheel size Ø200mm, table stroke 380mm, max feed rate 8,000mm/min. For gear manufacturing operations.
• Overhaul Service (オーバーホールサービス) Restoration service at the Shiga Manufacturing Division that disassembles, cleans, inspects, repairs, and tests aging machine tools to restore them to original specifications. Covers gear processing machines, grinding machines, and specialized equipment from domestic and overseas manufacturers. Customers ship machines to the Shiga factory for the full overhaul process.
• Retrofit Service (レトロフィットサービス) Machine modernization service that adds new functions such as automation and NC control to existing equipment. Transforms legacy machines into state-of-the-art equipment while maintaining production workflows. Includes electrical system renewal and full testing at Shiga Manufacturing Division.
• Cutting Tools & Tooling (切削工具・ツーリング) Comprehensive range of precision cutting tools including gear cutting tools (hob cutters, pinion cutters, shaving cutters, broach cutters, deburring cutters, skiving cutters), carbide/HSS tools (drills, endmills, reamers, taps), indexable tools, PCD/CBN tools, band saws, grinding wheels, and NC tooling holders. Distributed primarily via OSG Group product lineup.
• Jigs, Dies & Parts Processing (治具・金型・部品加工) Manufacturing jig and die solutions including processing jigs, inspection jigs, assembly jigs, heat treatment jigs, forging dies, press dies, plastic dies, and precision machined parts such as gears, worm gears, ball screws, ceramic parts, and resin parts. For automotive and general manufacturing customers.
• Measuring Instruments & Gauges (計測機器・ゲージ) Precision measurement equipment including calipers, micrometers, dial gauges, pin/ring/screw/block gauges, spline gauges, roughness meters, projectors, 3D coordinate measuring machines, image measuring systems, laser trackers, gear mesh testing machines, master gears, and calibration services.
• Environmental Equipment (環境機器) Factory environmental solutions including mist collectors, dust collectors, vacuum pumps, blowers, floating recovery devices, air filters, high-efficiency motors, chip crushers, coolant devices, filtration systems, magnetic separators, LED lighting, and unit control devices.
• Machine Tools (工作機械) Complete range of machine tools including machining centers, NC lathes, multitasking machines, cylindrical/surface/thread/tool grinders, hobbing machines, gear shapers, shaving machines, broaching machines, gear grinders, wire-cut/laser processing machines, washing machines, automatic transfer devices, and metal 3D printers. Distributed via OSG Group network.
• BMI Vacuum Heat Treatment Furnaces (BMI 真空熱処理炉) French-manufactured vacuum heat treatment furnaces from BMI (Lyon, France) distributed exclusively in Japan by Sanwa Seiki. Product line includes B8_T series horizontal gas quench furnaces, VSE series vertical gas quench furnaces, B5_TH/B6_TH oil quench furnaces, B5_R tempering furnaces, and B5_T hardening furnaces featuring patented circumferential cooling system. Includes installation, sales, and maintenance services.
• Gear Grinding Wheel Dressing Device (歯車研削盤用ドレス装置) Domestic-manufactured gear grinding wheel dressing device featuring all-domestic Japanese components, priced at approximately half the cost of overseas competing products while maintaining equivalent performance. Dimensions 540mm L × 140mm H × 230mm D, weight 25kg, rotation 2730rpm (50Hz) / 3276rpm (60Hz), electrical capacity 0.4kVA. Offered with a free 1-month trial/demonstration program.

Quantifiable outcome

• SWP Grindstone Molding Machine reduces wheel formation time from ~1.5 months (new order) to as little as 10 minutes (rotary dresser) or 50 minutes (solid wheel), representing over 99% time reduction
• +2 more outcomes

Segments3 records

Ideal customer profiles2 records

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 minor and core.

• San-En NeoPhoenix (三遠ネオフェニックス)minorGTM or Marketing Partner · 1 January 2022San-En NeoPhoenix is a professional basketball team in the B.LEAGUE. Sanwa Seiki has been an official sponsor and partner since the 2022-23 season, continuing through the 2025-26 season. The sponsorship provides brand visibility and community engagement in the Nagoya/Aichi region where Sanwa Seiki's headquarters is located.
• OSG Corporation (オーエスジー株式会社)coreOthers · 1 January 2001Sanwa Seiki is a group company of OSG Corporation, a leading global precision cutting tool manufacturer. OSG's comprehensive tool lineup and global distribution network are leveraged by Sanwa Seiki for product procurement and sales. The affiliation enables Sanwa Seiki to provide consistent services from tool selection, processing methods, processing condition proposals, troubleshooting, to after-sales services including regrinding and re-coating.
• BMI (France)coreChannel Partner/ Reseller/ DistributorSanwa Seiki is the exclusive Japanese distributor for BMI vacuum heat treatment furnaces. BMI is a French manufacturer (founded 1947, Lyon, France) with over 1,200 units shipped globally. BMI specializes in vacuum furnaces including gas quenching, oil quenching, tempering, nitriding, and low-pressure carburizing. Sanwa Seiki handles sales, installation, and maintenance in Japan, maintaining domestic stock of heaters, heat-resistant materials, and control components.

Scale indicators6 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Makino Milling Machine Co., Ltd. Japanese specialist machine tool manufacturer focused on machining centers, EDMs, and grinding machines — directly comparable in technology orientation and Japanese mid-cap industrial machinery profile. Both companies serve automotive and precision parts manufacturers in Japan and ASEAN.
• Misumi Corporation: Industrial MRO and FA components distribution platform serving Japanese and Asian manufacturers, overlapping with Sanwa Seiki on cutting tools, jigs/dies, and machine tool consumables. Misumi's catalog-based distribution model provides a comparable benchmark for the digital procurement pressures facing traditional traders like Sanwa Seiki.
• Yamazaki Mazak Corporation: Global Japanese machine tool leader (multi-tasking machines, machining centers, laser cutting) with extensive direct sales/service network across Asia. Represents the scale benchmark that Sanwa Seiki's original product roadmap is competing against in mid-sized precision gear-cutting equipment.
• Yamazen Corporation: Japan's leading hybrid machine tool trader and OEM (FA/Factory Automation), with a portfolio closely matching Sanwa Seiki's trading + proprietary manufacturing model. Both companies sell cutting tools, machine tools, and factory equipment while developing original equipment, and both target Japanese manufacturing customers across automotive and general metalworking.
• MonotaRO Inc. Japanese online industrial MRO marketplace serving manufacturers with tools, consumables, and equipment — directly comparable to Sanwa Seiki's trading business as a benchmark for how digital procurement platforms are reshaping tool distribution economics in Japan.
• Okuma Corporation: Major Japanese CNC machine tool manufacturer (lathes, machining centers, grinders) with parallel focus on in-house CNC technology development. Comparable to Sanwa Seiki's original product strategy (e.g., SHF08) where proprietary CNC and control systems differentiate equipment from generic machine builders.
• KAPP NILES (KAPP Werkzeugmaschinen): German specialist in gear grinding and profile grinding machines, with technology and customer base directly comparable to Sanwa Seiki's gear-cutting OEM business. Comparable in targeting precision drivetrain and powertrain gear manufacturers globally.
• Gleason Corporation: US-based global specialist in gear manufacturing equipment (hobbing, gear grinding, gear shapers, tooling) — the closest direct product competitor to Sanwa Seiki's hobbing machine business. Comparable in focus on gear-cutting machinery and supporting service ecosystem.
• SNK Co., Ltd. (Shin Nippon Koki): Japanese machine tool maker specializing in large 5-axis machining centers and gear-cutting machines. Comparable to Sanwa Seiki as a mid-sized Japanese OEM with proprietary machine tool technology serving automotive and aerospace customers.

Broad incumbents

• DMG MORI Co., Ltd. Global machine tool industry leader (turning, milling, additive manufacturing) and one of the largest machine tool companies worldwide. Comparable to Sanwa Seiki as a broad benchmark for machine tool industry economics, scale requirements, and competitive dynamics across automotive and industrial customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 records

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 →

Frequently asked questions about Sanwa Seiki Co.