Shigiya Machinery Works

What Shigiya Machinery Works does

Shigiya Machinery Works Ltd. (株式会社シギヤ精機製作所) is a privately held Japanese manufacturer of CNC cylindrical grinding machines, headquartered in Fukuyama, Hiroshima since 1984. The company traces its origin to 1911 as a loom manufacturer before transitioning fully to machine tools in 1958; it was formally incorporated under its current name in 1960. Shigiya designs, manufactures, and sells CNC cylindrical grinders, universal grinders, eccentric pin and polygon grinders, masterless cam grinders, centerless cylindrical grinders, face grinders, and custom-configured specialty grinding machines, with reported FY2025 revenue of ¥6,019 million and 280 employees as of March 2025.

The core technology portfolio covers vertical and horizontal cylindrical configurations (GP, GPL, GPH, GPC, GNW, GAE, GAS, GAC, GPV, GAV series), universal grinders (GU, GSU series) with direct-drive backlash-free wheelhead swiveling, hydrostatic slide systems for sub-micron-class accuracy, double-center drive for full-length machining without repositioning, and the 2024-launched SHIGIYA Plus group of add-on modules including RAKSOK in-process measurement, FUREPITA variable-contact steady rest, DANKILESS AI thermal displacement compensation, MAKASET automatic wheel teaching, and S³Pro conversational programming. Products range from compact models for small-part production to Japan's largest-capacity traverse-type cylindrical grinders handling 3,000 kg workpieces up to Ø1,000 mm.

Revenue is generated primarily through direct sale of configured-to-order machinery (3–5 month lead time) to industrial manufacturers, supplemented by an installed-base retrofit and overhaul service business. The company maintains wholly-owned direct sales and service subsidiaries in the USA (Schaumburg, IL, since 1990), Thailand (Samutprakarn, since 2010), China (Shanghai, since 2010), and a Taiwan joint-venture manufacturing base (Taichung, since 2016) producing the GPLT-30 series; a Korea subsidiary was liquidated in December 2023. Domestically, Shigiya operates five sales offices and two branch offices across Japan's principal manufacturing corridors (Tokyo/Kawaguchi, Ota, Nagoya, Hamamatsu, Osaka). Customer concentration is spread across general/industrial machinery, automotive (engine, drive, suspension), aerospace, cutting tools/dies, robotics, electrical machinery, two-wheelers, printing equipment, steel, and hydraulic/pneumatic equipment, with approximately 20% domestic share of the Japanese cylindrical grinder market. The company has been a Japanese-government-recognized future growth enterprise and has held a Medal with Yellow Ribbon; it is family-controlled by the Shigitani founding family, with Norikazu Shigitani serving as President and Representative Director.

Name

Shigiya Machinery Works

Legal name

株式会社シギヤ精機製作所

Website

https://shigiya.co.jp

Company type

Private

Founded year

1911

Operating status

Operating

Headcount range

251–500 employees

Short description

Shigiya Machinery Works is a privately held Japanese manufacturer of CNC cylindrical grinding machines and related precision grinding equipment, serving automotive, aerospace, industrial machinery, and other manufacturers via direct sales offices in Japan and wholly-owned subsidiaries in the USA, Thailand, China, and Taiwan.

Ownership category

akta.pro rank

Product category

CNC Grinding Machines / Industrial Machine Tools

NAICS

Machine Tool Manufacturing (333517), Industrial Machinery Manufacturing (33324)

SIC

Machine Tools, Metal Cutting Types (3541), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Grinding, Honing & Superfinishing Equipment (IMAHADAE)

akta.pro secondary industries

CNC Machine Tools (Turning, Milling, Machining Centers) (IMAHADAA), Linear Motion & Mechanical Power Transmission (Ball/roller screws, linear guides, bearings, couplings) (IMAHAGAM)

Keywords

• CNC cylindrical grinders
• Precision machine tools
• Industrial grinding machines
• Metalworking equipment
• CNC grinding solutions

Headquarters

HQ city

Fukuyama

HQ country

Japan

HQ region

Asia

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. CNC Grinding Machine Sales: Manufacture and sale of CNC cylindrical grinders, CNC universal grinders, CNC eccentric pin/polygon grinders, CNC centerless cylindrical grinders, CNC masterless cam grinders, and specialized custom-designed grinding machines. Products are sold directly to end-user manufacturers through domestic sales offices and overseas subsidiaries. Lead time is 3-5 months from order for standard and custom specifications.
2. Machine Tool Overhaul and Retrofit Services: Retrofitting and overhaul services (retrofit, overhaul) for existing machine tools, restoring and upgrading older equipment to modern specifications. Services provided by domestic operations and international subsidiaries in the USA, Thailand, and Shanghai.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Shigiya Machinery Works designs, manufactures, and sells CNC cylindrical grinding machines and related precision grinding equipment — including cylindrical, universal, eccentric pin/polygon, masterless cam, centerless, and face grinders — for industrial manufacturers. The company also provides machine tool retrofit and overhaul services for installed equipment, delivered through domestic sales offices and international subsidiaries.

Product overview

Shigiya Machinery Works is a Japanese manufacturer specializing in CNC cylindrical grinding machines and related precision machining equipment. The product portfolio centers on cylindrical and angular cylindrical grinders (GP, GPS, GPL, GPH, GPC, GNW, GAE, GAS, GAC, GPV, GAV series), CNC universal grinders (GU, GSU series), specialized grinders for eccentric pins and polygon grinding (GPEL, GPES series), masterless cam grinders (GCMH series), centerless grinders (GCO series), and face grinders (SG series). The company also offers the SHIGIYA Plus product group comprising add-on modules including RAKSOK measurement systems, FUREPITA steadies, DANKILESS AI thermal correction, MAKASET auto-teaching, and S3Pro programming software. Products range from compact models for small parts to Japan's largest capacity grinders handling 3,000kg workpieces with 1,000mm swing diameter.

Differentiator

Problem solved

Functional benefit

Brands

• SHIGIYA Plus: A product group offering enhanced value-added features including RAKSOK (external diameter measurement), FUREPITA (variable contact 2-point live rest), DANKILESS (AI thermal displacement correction), MAKASET (automatic wheel teaching function), and S³Pro (5th generation interactive automatic programming system).

Products and services

• CNC Cylindrical Grinders (GP/GPV/GAV/GPS/GPL/GPH/GPC/GPD/GNW/GAE/GAS/GAC series) Broad family of CNC cylindrical and angular cylindrical grinders for general industrial machinery, automotive (engine/drivetrain/suspension), electrical machinery, hydraulic/pneumatic, and tool-grinding applications. Configurations include plain wheelhead, universal, angular, vertical, compact, double-drive, twin-head, and large-capacity machines for both single-piece and mass production.
• CNC Universal Grinders (GU/GSU series) CNC universal grinders with wheelhead swiveling ±30°, supporting plain, angular, and internal grinding. GSU series features direct-drive backlash-free swiveling and 8 wheelhead patterns for versatile operations in general machinery, cutting tools, and aerospace component production.
• CNC Special Grinders (GCMH masterless cam grinder, GPEL eccentric pin grinder, GPES eccentric pin/polygon grinder) Specialized CNC grinders for cam profile, eccentric pin, and polygon grinding, including the high-speed GPEL-30B.25 eccentric pin grinder (400 min⁻¹ workpiece rotation), GPES eccentric pin/polygon grinder for compressor crankshafts and die/punch polygon grinding, and the GCMH masterless cam grinder with closed-type hydrostatic slide for high accuracy.
• GCO-16B CNC Centerless Cylindrical Grinder

Quantifiable outcome

• DANKILESS AI thermal displacement compensation reduces dimensional changes by an average of 77%
• +4 more outcomes

Segments10 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature6 records

Partnerships

One partnership is on record.

• 京セラEPA合同会社 (Kyocera EPA合同会社)moderateOthers · 1 November 2024On-site PPA (Power Purchase Agreement) partnership for a 1MW solar power generation system installed at the Shigiya headquarters factory in November 2024. The system generates approximately 888,753 kWh of clean energy annually, reducing CO2 emissions by 344.4 tonnes per year.

Scale indicators10 records

Recent moves16 records

Expansion highlights6 records

Direct peers

• Fritz Studer AG (United Grinding Group): Swiss manufacturer of CNC cylindrical, universal, and internal grinding machines - the most direct global competitor to Shigiya. Overlapping product portfolio and similar target customers in automotive, aerospace, and toolmaking.
• Okamoto Machine Tool Works: Japanese manufacturer specializing in surface, creep-feed, and profile grinding machines as well as cylindrical grinders. Domestic peer competing for the same Japanese manufacturing customers with overlapping product categories.
• JTEKT (Toyoda): Japanese machine tool maker with strong cylindrical and universal grinding product lines under the Toyoda brand. Competes directly with Shigiya in automotive crankshaft and engine component grinding.
• Walter Maschinenbau (UNITED GRINDING): German manufacturer of tool grinding and eroding machines, part of United Grinding Group with Studer. Comparable in serving precision grinding applications for cutting tools and metalworking components.
• Danobat (Danobatgroup): Spanish machine tool manufacturer producing cylindrical, horizontal, and vertical grinders. Comparable product range targeting automotive, railway, and energy sectors with similar high-precision positioning.

Broad incumbents

• EMAG Holding: German broad-line machine tool maker offering turning, grinding, and gear-cutting machines. Competes with Shigiya in automotive component machining but serves a wider product portfolio.
• Makino Milling Machine: Japanese machine tool maker specializing in machining centers and EDM, with a broader portfolio than Shigiya but competing for the same Japanese manufacturing customers and tier-1 automotive suppliers.
• Mitsubishi Heavy Industries (Machine Tool): Diversified industrial conglomerate with a machine tool division offering gear cutting and grinding solutions. Overlaps with Shigiya in serving large automotive and industrial customers but is a much broader incumbent.
• Amada Machine Tools: Japanese machine tool maker with broader product lines including surface grinders and machining centers. Competes in adjacent grinding categories and for similar Japanese small/medium manufacturers.
• Haas Automation: US-based CNC machine tool manufacturer with broad product lines including mills, lathes, and rotary tables. Serves overlapping industrial customers in global manufacturing with a different product focus but similar SME customer base.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/shigiya_co
• YouTubeyoutube.com/channel/UCJ8lUyB8tX3yGZgj8ZJF5Bg
• Facebookfacebook.com/442258285814268

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 Shigiya Machinery Works