Riken Corundum Company

What Riken Corundum Company does

Riken Corundum Co., Ltd. (理研コランダム株式会社) is a Japanese manufacturer of coated abrasives and grinding/polishing products founded in 1935 on abrasive materials technology developed at the RIKEN (理化学研究所) Institute. The company produces a comprehensive catalog spanning abrasive paper sheets, abrasive cloth, abrasive belts, fiber discs, flap wheels, ceramic cross products, polyurethane sponges, non-woven fabric hand pads (RICO BRIGHT), precision abrasive film sheets, loose abrasive grains, and branded power tools (Rico Tool sanders and grinders). Its underlying technology combines seven abrasive grain types (aluminum oxide, white aluminum oxide, aluminum zirconia, silicon carbide, natural diamond, garnet, emery) with hide-glue or synthetic-resin bonding onto paper, cloth, or film substrates.

Beyond core abrasives, Riken Corundum has extended its ceramic particle coating technology into functional components for office automation equipment — grip rollers, drive belts, torque limiters, and clutch plates used in printers, plotters, copiers, and coin dispensers. The company also markets directly applied abrasive grains for shot blast, polishing, and semiconductor wafer cutting applications. Revenue streams are predominantly hardware sales across four primary use-case segments: industrial manufacturers (metalworking, woodworking, automotive parts), OA-equipment OEMs, precision finishing operations, and automotive refinish shops. Sub-brands include RICO BRIGHT, RICRLE (リックル), and ぴちっとけんま.

The company operates an inquiry-driven direct sales model — no public pricing or e-commerce — via a Japanese/English bilingual website, dedicated phone lines per product category, and recurring trade show presence (Grand Fair 2026, JP Cash Show 2026). Geographically the company is Japan-domiciled with a Saitama Prefecture headquarters, and retains formal listed-company investor relations functions.

Name

Riken Corundum Company

Legal name

RIKEN CORUNDUM CO.,LTD.

Website

https://rikencorundum.co.jp

Company type

Public

Founded year

1935

Operating status

Operating

Headcount range

101–250 employees

Short description

Riken Corundum (理研コランダム) is a Japan-based, 1935-vintage manufacturer of coated abrasive products — sheets, cloth, belts, discs, sponges, non-woven pads, and power tools — plus ceramic-coated OA-equipment grip rollers, serving industrial manufacturers, OA OEMs, and automotive refinish customers through direct inquiry-based sales.

Ownership category

akta.pro rank

Headquarters

HQ city

Konosu

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Abrasive Products Sales: Primary revenue from manufacturing and selling grinding/polishing products including abrasive cloth paper, sheets, rolls, belts, discs, wheels, sponges, non-woven fabric, and precision polishing film sheets in various shapes (sheet, roll, belt, disc, wheel) and sizes. Products are sold as standard catalog items and custom-made products.
2. OA Machine Parts (Grip Rollers and Functional Rollers): Sales of grip rollers and functional rollers for OA equipment including printers, plotters, copiers — applying ceramic particle coating technology. Also includes drive belts, torque limiters, and clutch plates.
3. Abrasive Grain Materials: Sales of loose abrasive grain materials (aluminum oxide, white aluminum oxide) packaged in 4kg bags for sandblasting and general grinding applications.
4. Power Tools (Rico Tools): Sales of pneumatic and electric power tools including double action sanders, orbital sanders, mini orbital sanders, roller belt sanders, die grinders, and micro grinders under the Rico Tool brand.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Riken Corundum manufactures and sells industrial abrasive products including abrasive paper sheets, abrasive cloth, abrasive belts, rotating discs, flap wheels, non-woven fabric hand pads (RICO BRIGHT), polyurethane sponges, precision abrasive film sheets (SKF), and loose abrasive grains. The company also produces pneumatic and electric power tools (RICO Tools) and functional components such as ceramic-coated grip rollers for office automation equipment (printers, plotters, copiers). Products are sold through inquiry-based direct sales channels to industrial manufacturers and fabricators in Japan.

Product overview

Riken Corundum Company (理研コランダム株式会社) manufactures a comprehensive portfolio of abrasive products and grinding solutions. Established in 1935 based on technology from the RIKEN Institute, the company offers: abrasive paper sheets (耐水研磨紙シート) in waterproof and dry variants; abrasive cloth (研磨布) and cross products for various applications; rotating disks (リコディスク) including ceramic and specialty types; endless and jointed abrasive belts (研磨ベルト) for wide belt and stroke sanders; non-woven fabric products (不織布) like RICO BRIGHT and hand pads; precision abrasive film sheets (精密研磨フィルムシート); sponges (リコスポット); loose abrasive grains (研磨材) in aluminum oxide and white aluminum; and power tools (リコツール) including sanders and grinders. Additionally, the company produces OA equipment components such as grip rollers (グリップローラー) utilizing their coating technology, and accessories like graphite canvas. The product line covers sheets, rolls, belts, disks, wheels, tools, and raw materials serving metalworking, woodworking, automotive, and office equipment industries.

Differentiator

Problem solved

Functional benefit

Brands

• RICO BRIGHT: Non-woven fabric hand pad product line for polishing and finishing applications
• RICRLE (リックル)
• ぷちっとけんま

Products and services

• Abrasive Paper Sheets (耐水研磨紙シート) Waterproof and dry abrasive paper sheets made from aluminum oxide (A), white aluminum (WA), or silicon carbide (C) grains on paper backing, used for grinding and polishing various materials.
• Abrasive Cloth (研磨布) Fabric-based abrasive products made with A-grain (aluminum oxide) on cloth backing, designed for manual grinding applications with flexibility and soft finishing.
• Grip Rollers (グリップローラー) Ceramic particle-coated rollers for office automation equipment including printers, plotters, and copiers, utilizing coating technology derived from abrasive cloth manufacturing.
• Abrasive Grains/Materials (研磨材) Loose abrasive materials including AARF (aluminum oxide, 95.80% Al2O3) and WARF (white aluminum, 99%+ Al2O3) available in various grit sizes for sandblasting and general grinding applications.
• RICO Tool Sanders and Grinders (リコツール) Pneumatic and electric sanders and grinders including double action sanders, orbital sanders, roller belt sanders, and micro grinders for various grinding applications.
• RICO Disk Products (リコディスク) Rotating disk abrasive products including SUSAP, RCEA, RCEZ, RCDSP (ceramic), and magic-type disks for metal, wood, and surface finishing applications.
• Abrasive Belts (研磨ベルト) Endless and jointed abrasive belts including resin belts (A767), zirconia belts (Z7), ceramic belts (S79A), and endless bags (36号A) for wide belt sanders and stroke sanders.
• RICO Sponge (リコスパンジ) Polyurethane sponge abrasive products with cushioning properties for flexible grinding on curved surfaces, suitable for both wet and dry grinding.
• RICO BRIGHT Non-Woven Fabric (リコブライト不織布) Four-layer high-density non-woven fabric abrasive products with uniform fiber structure and urethane resin coating for rust removal, paint preparation, and finishing applications.
• SKF Precision Abrasive Film Sheets (精密研磨フィルムシート) Fine abrasive film sheets with white aluminum grains uniformly coated on polyester film for precision finishing of metal parts, knives, plastics, and ceramics.
• Fiber Disks (ファイバーディスク) CFD C-fiber disks with robust fiber backing and strong adhesive for heavy-duty grinding applications on metals and weld bead removal.
• S79A Ceramic Cross Products (セラミックス) Ceramic grain cross products developed jointly with grain manufacturers, featuring self-sharpening properties and heat-suppressing coating for burr removal and stainless steel grinding.
• Flap Wheels (フラップホイール) Abrasive cloth wheels with radially bundled flaps for continuous grinding with self-cleaning action, featuring air-cooling function to prevent burning and deformation.
• Graphite Canvas (グラファイトキャンバス) Graphite-coated canvas used as platen cover to reduce friction between belt and platen during grinding operations, improving efficiency in finishing processes.

Quantifiable outcome

• Global corundum market growth rate: 5.2% CAGR (2024–2029), expanding from $2.64B to $3.37B

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• 3M: Global diversified industrial conglomerate with a major Abrasives division (Cubitron, Imperial, Scotch-Brite) — overlapping product lines but as part of a much broader portfolio and at significantly greater scale.
• Saint-Gobain (Norton Abrasives): Global building materials and abrasives group with Norton brand offering coated and bonded abrasives — comparable products but as part of a much larger portfolio with global distribution Riken lacks.

Direct peers

• Klingspor: German manufacturer of coated abrasives (belts, sheets, discs, rolls) — closely comparable product portfolio in abrasive cloth and paper with similar end markets in metalworking and woodworking.
• VSM Abrasives: German coated abrasives manufacturer with overlapping product formats (belts, sheets, discs) and similar customer base in metalworking and woodworking — comparable mid-sized industrial abrasives peer.
• Sia Abrasives: Swiss coated abrasives specialist producing belts, sheets, discs, and rolls across the same grit and backing matrix as Riken Corundum — directly comparable in coated abrasive technology and industrial customer base.
• Tyrolit: Austrian abrasives manufacturer offering coated and bonded abrasive products serving metalworking, automotive, and precision finishing — directly comparable in product breadth and industrial end markets.
• Mirka: Finnish manufacturer of abrasive sheets, discs, and belts, with strong overlap in non-woven and film-backed abrasives as well as sanding tools — comparable in product mix and finishing-application focus.
• Noritake Co., Limited: Japanese manufacturer of grinding wheels and abrasive products with deep overlap in industrial grinding, polishing, and coated abrasives — directly comparable as a domestic Japanese abrasive peer with a similar B2B industrial customer base.
• Hermes Schleifmittel: German manufacturer of coated abrasives (belts, sheets, discs) with comparable emphasis on flexible backing substrates and custom-engineered products for industrial finishing.

Emerging players

• Disco Corporation: Japanese precision grinding and dicing equipment maker for semiconductor wafer cutting — comparable in the wafer-cutting application Riken is pursuing, making Disco both a customer-adjacent partner and a competing technology provider.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 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 Riken Corundum Company