Resin Fibre Discs

Resin Fibre Discs are by far the most popular coated abrasive product used in industry. Constructed with a heavy vulcanized fibre back, they are coated with abrasive grains and bonded with a tough, heat resistant resin. This results in a durable, cool and fast cutting action. A wide variety of grinding abrasive material is available so you can select the materials best suited to your specific applications. Usually only the diameter, grain size and mineral type need be specified.

Features/Benefits

Availability Range

Note: Additional specifications (diameters, grit sizes) available upon request.

Available Grit Sizes
Grain Type 16 24 36 50 60 80 100 120
Premium Aluminum Oxide
Open-Cut Aluminum Oxide        
Premium Alumina Zirconia    
Bi-Cut Alumina Zirconia          
CG Ceramic Grain  
CG Lite Ceramic Grain  
Silicon Carbide
Available Diameters
Grain Type 4" 4-1/2" 5" 7" 9"
Premium Aluminum Oxide
Open-Cut Aluminum Oxide  
Premium Alumina Zirconia  
Bi-Cut Alumina Zirconia    
CG Ceramic Grain  
CG Lite Ceramic Grain  
Silicon Carbide    

Applications

Premium Aluminum Oxide (Closed Coat)

Open-Cut Aluminum Oxide

Premium Alumina Zirconia

Bi-Cut Alumina Zirconia

CG Ceramic Grain

CG Lite Ceramic Grain

Silicon Carbide

5/8" - 11 Turn-On Arbors

Accessories

Marvel offers a full line of accessories to improve operating efficiency and increase disc life. These include back-up pads, disc cutters, spanner wrenches and disc lubricant.

RPM Recommendations

Optimum grinding speeds will vary considerably with the type of abrasive surface, material being abraded and the contours of the surface. Back-up pads must be used regardless of the application. They contribute to the safe operation of the grinding process. They also reduce chatter, overheating and lengthen disc life.

For most discs, recommended tool speed is 5400 RPM for 7" discs and 4250 RPM for 9" discs. Since the deciding factor is the speed at the disc perimeter, higher safe speeds can be considered for 4", 4-1/2" and 5" discs.

Resin Fibre Disc Selection Guide
Applications Aluminum Oxide Regular Aluminum Oxide Premium Aluminum Oxide Open-Cut Alumina Zirconia Alumina Zirconia Bi-Cut CG  Grain CG Lite  Grain Silicon Carbide
Weld Grinding/ Stock Removal Carbon Steel   GOOD   BETTER   BEST BETTER  
Weld Grinding/Stock Removal Stainless Steel   BETTER   BEST     BEST  
Non-Ferrous/Soft Metal Stock Removal (Aluminum) GOOD BETTER BEST          
Rust and Scale Removal   GOOD   BETTER   BEST BETTER  
Titanium Stock Removal       BETTER     BETTER BEST
Paint & Body Filler Work GOOD   BETTER   BEST      
Fiberglass and Composite materials GOOD   BETTER   BEST      
General, Multi-Purpose Grinding and Finishing GOOD BETTER   BEST     BEST  
Combination of Carbon and Stainless Steel Grinding GOOD BETTER   BEST     BEST  
Stone and Terrazzo Finishing         BETTER     BEST