What D.I.D does

D.I.D is the industrial chain brand of Daido Kogyo Co., Ltd. (大同工業株式会社), a Japanese manufacturer of mechanical power transmission and material handling chains. The company's product portfolio spans transmission chains, small conveyor chains, DK conveyor chains, seal chains, stainless steel chains (including the SN specification series), plastic module chains, and DK conveyor systems, plus a set of related accessories and maintenance consumables (sprockets, shaft couplings, chain lubricants, limit gauges, the Dr. Window inspection tool, and the Shakomaru-kun handling tool). Specialized product lines — the Strongest Series, Stainless SN specification, Ultra Environmental series, Silent series, and REVO chain — target demanding applications such as high-load, high-temperature, corrosive, and noise-sensitive industrial environments.

The company serves a broad horizontal base of industrial customers across at least 12 verticals, including steel and non-ferrous metals, cement, automotive manufacturing, power generation (boiler and biomass), waste and recycling, machine tools, chemical processing, logistics and warehousing, packaging, non-woven textiles, food production, and can manufacturing. Customer engagement is direct and B2B: the company operates a Japanese-only website with an ActiBook digital e-catalog, downloadable PDF catalogs and CAD data, an extensive video NAVI library covering chain handling, performance confirmation, and inspection, and industry-specific problem-solving case studies. Pricing is inquiry-based with no public disclosure.

D.I.D generates revenue through one-time product sales of industrial chain components and related accessories to OEMs and industrial end-users. The business model is a conventional B2B industrial component manufacturer model: digital self-service catalog for discovery and specification, inquiry-based quote flow, and direct fulfillment. No channel partner network, field sales structure, or aftermarket service revenue stream is disclosed in the source material.

Name

D.I.D

Legal name

大同工業株式会社 (Daido Kogyo Co., Ltd.)

Website

https://did-coltd.com

Company type

Private

Operating status

Operating

Short description

D.I.D (Daido Kogyo Co., Ltd.) is a Japanese manufacturer of industrial power transmission and conveyor chains — including roller chains, seal chains, stainless steel chains, and DK conveyor systems — serving B2B customers across steel, automotive, power generation, packaging, food, and other manufacturing verticals, sold through a direct website and inquiry-based quote flow.

Ownership category

akta.pro rank

Product category

Industrial Chain Manufacturing

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (33361), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Conveying, Feeding & Material Handling for Packaging Lines (IMALAOAG)

Keywords

• Industrial chain manufacturing
• Power transmission chains
• Conveyor chain systems
• Material handling equipment
• Stainless steel chains

Headquarters

HQ city

Not specified in source

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Chain Products: Manufacture and sale of industrial transmission and conveyor chains, including roller chains, small conveyor chains, DK conveyor chains, seal chains, stainless steel chains, and plastic module chains. Revenue is generated through product sales to industrial customers in manufacturing, logistics, and processing sectors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

D.I.D (Daido Kogyo Co., Ltd. / 大同工業株式会社) manufactures and sells industrial mechanical chains and power transmission components, including roller chains, conveyor chains, seal chains, stainless steel chains, plastic module chains, and DK conveyor systems. The company supplies these products to industrial equipment manufacturers across steel, cement, automotive, power generation, food processing, packaging, chemicals, logistics, and recycling sectors, supported by technical NAVI tools, CAD data downloads, and industry-specific problem-solving case studies.

Product overview

D.I.D (大同工業株式会社) is a Japanese manufacturer of industrial mechanical chains and power transmission components. The product portfolio includes several distinct product lines: the Strongest Series (最強シリーズ) of high-strength roller and conveyor chains for demanding applications; DK Conveyor Chain systems for material handling; stainless steel SN-type chains for corrosion-resistant environments; and seal chains designed to prevent lubricant leakage. The company also produces related accessories and maintenance products including chain lubricants, limit gauges, Dr. Window inspection tools, shaft couplings, sprockets, and specialized tools like Shakomaru-kun and C-Top. The product line spans drive chains, small conveyor chains, conveyor systems, and chain-related merchandise serving industries such as food processing, automotive manufacturing, logistics, chemical, cement, steel, and power generation.

Differentiator

Problem solved

Functional benefit

Products and services

• Strongest Roller Chain (最強ローラチェーン) High-strength roller chain designed for demanding industrial power transmission applications across manufacturing and material handling equipment. Part of the Strongest Series (最強シリーズ).
• Strongest Conveyor Chain (最強コンベアチェーン) High-strength conveyor chain designed for material handling and industrial conveyor systems in demanding applications. Part of the Strongest Series (最強シリーズ).
• DK Conveyor Chain (DKコンベヤチェーン) Specialized conveyor chain system designed for various industrial conveyor applications with a dedicated user's guide for selection and operation.
• Stainless Steel Roller Chain SN Specification (高強度ステンレス ローラチェーンSN仕様) High-strength stainless steel roller chain in SN specification designed for corrosive or demanding industrial environments requiring enhanced durability and corrosion resistance.
• Stainless Steel Conveyor Chain SN Specification (ステンレス コンベアチェーンSN仕様) Stainless steel conveyor chain with SN specifications for corrosion-resistant material handling applications in demanding industrial environments.
• Seal Chain (シールチェーン) Sealed chain designed to prevent lubricant leakage and contamination in industrial applications. Includes structural diagrams and development history documentation. A "Strongest Seal Chain" performance confirmation NAVI tool is available for customers.
• Ultra Environmental Series Chains (超環境シリーズ) Chains engineered for ultra-environmental conditions targeting noise reduction and specialized environmental requirements in harsh industrial settings.
• Silent Series Chains (静音シリーズ) Silent series chains designed for noise reduction during operation in industrial environments where reduced acoustic output is required.
• Plastic Module Chain (プラスチックモジュールチェーン) Plastic modular conveyor chains designed for specific material handling applications where plastic construction is preferred over metal.
• DID Chain Lube / High Lube (DIDチェーンルーブ／ハイパールーブ) Chain lubrication products designed for chain maintenance and extended service life in industrial chain systems.
• Dr. Window (Dr.ウィンドウ) Chain inspection and diagnostic tool for maintenance assessment of industrial chains, with a dedicated Dr. Window NAVI educational resource.
• Limit Gauge (限界ゲージ) Gauge tool for measuring and checking chain wear limits to determine when industrial chain replacement is required.
• Shakomaru-kun (しゃこ丸君) Chain-related tool or accessory product designed for chain maintenance and handling applications.
• DID C-Top (DID C-トップ) Chain top attachment product for chain systems used in industrial conveying applications.
• Shaft Coupling (軸継手) Mechanical coupling component for connecting shafts in industrial power transmission systems, sold as a standalone component compatible with chain drive systems.
• Sprocket (スプロケット) Toothed wheel designed to engage with roller chains for power transmission in industrial chain drive systems. Sold as a standalone component.
• Roller Chain Bolt / Turnbuckle (ローラチェーンボルト・ターンバックル) Fastening and tensioning components for roller chain assembly, adjustment, and connection in industrial chain drive installations.

Segments12 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Direct peers

• Sedis Group: Sedis is a French manufacturer of industrial roller chains, conveyor chains, and silent chains serving automotive, material handling, and industrial machinery customers globally. Directly comparable to D.I.D's industrial chain portfolio across similar end-markets and applications.
• Donghua Chain Group: Donghua is one of China's largest industrial chain manufacturers producing roller chains, conveyor chains, and specialty chains at scale. Comparable to D.I.D in product portfolio, with a structural cost advantage that pressures D.I.D's pricing in commodity segments.
• iwis antriebssysteme GmbH: iwis is a German manufacturer of precision roller chains, leaf chains, and conveyor chains for industrial and automotive applications. Directly comparable to D.I.D in product range and customer overlap, particularly in automotive and machinery applications.
• Tsubakimoto Chain Co. Tsubaki is Japan's largest and a globally dominant manufacturer of industrial roller chains, conveyor chains, and power transmission components — directly comparable to D.I.D in product portfolio (roller chains, conveyor chains, sealed chains, stainless variants) and target customers (automotive, steel, packaging, logistics). The two are the most direct head-to-head competitors in Japan.
• KMC (Kuei Meng International Inc.): KMC is one of the world's largest roller chain manufacturers, supplying industrial chains for motorcycles, bicycles, industrial machinery, and conveyors. Comparable to D.I.D's industrial transmission chain business in product type and global commercial scale.
• Regina Chain (Regina Industrie Ceramiche / Fenner): Regina is a leading European industrial chain manufacturer producing roller chains, conveyor chains, and specialty chains for industrial applications — directly comparable to D.I.D's roller and conveyor chain lines, particularly in food processing and packaging where Regina and DID both serve overlapping OEMs.
• Wippermann jr. GmbH: Wippermann is a German manufacturer of precision roller chains and conveyor chains, known for high-strength and specialty chains — comparable to D.I.D's 'Strongest Series' and stainless SN chains in serving demanding industrial applications with premium positioning.

Broad incumbents

• SKF Group: SKF is a global leader in bearings, seals, and power transmission components including chain drives and related accessories. Comparable to D.I.D as a broader industrial power-transmission incumbent serving automotive, industrial, and machinery customers, though SKF's chain exposure is a smaller part of its portfolio.
• Habasit AG: Habasit is a global leader in conveyor and power transmission belting with an industrial chain product line — comparable to D.I.D's conveyor chain and material handling chain portfolio across food, packaging, logistics, and automotive end-markets.

Others

• Tsubaki Nakashima Co. Tsubaki Nakashima is the bearing and machine component arm of the broader Tsubaki group, adjacent to but not directly competing with D.I.D's chain business — relevant as a peer within the same Japanese industrial power-transmission ecosystem that shares customer relationships and distribution channels with DID.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 D.I.D