Engineered by Koyo-Sha, the R/R abrasive belts deliver reliable performance on steel, stainless steel, aluminum, brass, and contoured surfaces. Offered in a wide range of grit sizes and joint types, these belts ensure smooth grinding, improved surface finish, and durability for both wet and dry sanding processes.
Koyo-Sha Abrasive Belt R/R Series
The R/R Series abrasive belts from Koyo-Sha feature a resin-bonded abrasive and twilled cotton backing that resists wear and heat buildup. With popular variants such as GAK for heavy grinding and EAN for aluminum work, this series supports versatile metalworking and finishing needs with excellent consistency and grit variety.
Features
Durable resin-bonded abrasive for long belt life and heat resistance.
Flexible and strong backing support for stable grinding operations.
Available from coarse to fine (40 up to 600) for different finish requirements.
Designed with joint (typically D-joint) for continuous loop grinding.
Includes types like GAK, EAK, EAN, SAK, JWK, JCK for heavy grinding, aluminum work, curved surfaces, etc.
Overview
| Specification | Typical Value / Notes |
|---|---|
| Product Name | Koyo-Sha Abrasive Belt R/R Series |
| Bond | Resin bond (R/R) for abrasive grit adhesion and heat resistance |
| Backing Material | Twilled cotton cloth backing |
| Abrasive Types | A (Aluminium oxide), WA (White alumina), C (Silicon carbide) depending on variant |
| Available Grit Sizes | 40, 50, 60, 80, 100, 120, 150, 180, 220, 240, 280, 320, 400, 500, 600 |
| Common Variants | GAK (heavy grinding), EAK (general metal), EAN (aluminum), SAK (light grinding), JWK (curved surfaces), JCK (brass) |
| Standard Belt Sizes | Custom width × length belts (e.g., 75 mm × 3350 mm etc.) as designated by customer |
| Joint Type | Popularly D-joint, other joints upon request |
| Typical Packing | Sold in boxes (commonly 10 pcs/box, varies by size) |
| Applications | Grinding and finishing for metal fabrication, automotive, aerospace, consumer appliances, general industrial sanding. |










