Description
3M™ Cubitron™ II 947A cloth-backed abrasive disc: performance and precision for your grinding tasks
The 3M™ Cubitron™ II 947A abrasive disc is designed for demanding grinding tasks on metal. Its precision-shaped grain technology cuts fast, runs cooler, and lasts longer than conventional abrasives.
Its robust cloth backing absorbs vibrations and resists mechanical stress. Ideal for sanding steel, stainless steel, and alloys in the workshop or on the job site.
With the Cubitron™ II 947A, you increase productivity without sacrificing finish quality.
Presentation of the 3M™ Cubitron™ II 947A cloth-backed abrasive disc
The 3M™ Cubitron™ II 947A abrasive disc is a high-performance sanding tool designed for demanding professionals. Its robust cloth backing provides excellent tear resistance and good conformability on complex surfaces.
It is aimed at metalworkers, boilermakers, and body shop technicians looking for productivity and consistency in roughing, intermediate finishing, or sanding operations on ferrous and non-ferrous metals.
Precision-Shaped Grain™ technology: the heart of performance
Precision-Shaped Grain™ technology is what fundamentally differentiates this disc from conventional ceramic or aluminum oxide abrasives. The grains are manufactured with a precise and uniform triangular geometry, obtained by molding, not by random crushing.
The result: each grain cuts cleanly, right from the first contact, without crushing or polishing the surface. Material is removed faster, with less heat generated. The workpiece remains cooler, and the risk of burning or warping is reduced.
The grains self-sharpen as they erode, maintaining an aggressive and consistent cut throughout the life of the disc. Fewer abrasive changes, less time wasted.
| Product | Grain technology | Backing | Main use | Key strengths |
|---|---|---|---|---|
| 3M™ Cubitron™ II 947A | Precision-Shaped Grain™ (molded ceramic) | Cloth | Metal sanding, roughing, intermediate finishing | Fast cutting, low heat generation, long life |
| 3M™ Cubitron™ II 984F | Precision-Shaped Grain™ | Vulcanized fiber | Aggressive grinding on stainless steel and steel | Very high material removal rate |
| 3M™ 577F (conventional ceramic grain) | Crushed ceramic | Cloth | Metal and hardwood sanding | Good durability/cost ratio |
| Norton Blaze R980 (Saint-Gobain) | Crushed SG® ceramic | Cloth / fiber | Metal and stainless steel sanding | Versatility, available in many grits |
Technical specifications and typical properties of the 947A
The 3M™ Cubitron™ II 947A is a cloth-backed abrasive disc designed for demanding grinding operations on ferrous and non-ferrous metals.
Its Cubitron™ II precision mineral stands out for its sharp-edged triangular grains. These grains cut through the metal rather than rubbing it, which reduces generated heat and protects the workpiece.
The cloth backing offers excellent resistance to tearing and moisture. It adapts to complex shapes better than a conventional paper backing.
Main specifications:
- Mineral: precision aluminum oxide (Cubitron™ II technology)
- Backing: durable polyester cloth
- Available grits: P80, P120, P180, P220 (depending on reference)
- Binders: resin-on-resin for optimal grain retention
- Use: sanding, finishing, deburring on steel, stainless steel, aluminum
This disc is suitable for orbital and random orbital sanders. Its service life is significantly longer than standard aluminum oxide abrasives.
| Product | Mineral | Backing | Main use | Relative service life |
|---|---|---|---|---|
| 3M™ Cubitron™ II 947A | Precision aluminum oxide | Polyester cloth | Metal sanding/finishing | ⭐⭐⭐⭐⭐ |
| 3M™ 255P (Hookit) | Ceramic aluminum oxide | Paper | Bodywork, primer | ⭐⭐⭐⭐ |
| Norton Blaze R980P | SG ceramic | Cloth | Steel material removal | ⭐⭐⭐⭐ |
| Sia 1950 Siawood | Standard aluminum oxide | Paper | Wood, soft materials | ⭐⭐⭐ |
Applications and materials compatible with the Cubitron™ II 947A
The Cubitron™ II 947A is designed for grinding ferrous and non-ferrous metals, including steel, stainless steel, and aluminum. Its robust cloth backing allows it to adapt to curved or irregular surfaces without tearing.
It excels in finishing sanding, deburring, and smoothing operations. The precise geometry of 3M's Cubitron™ II grains ensures a clean and consistent cut, with less heat generated than with a conventional abrasive.
The cloth backing offers excellent flexibility. It is particularly suitable for manual work or belt sanders, on mechanical parts, welds, or profiles.
Compatible materials:
- Steel and stainless steel
- Aluminum and light alloys
- Titanium
- Superalloys
| Product | Manufacturer | Backing | Target materials | Typical use |
|---|---|---|---|---|
| Cubitron™ II 947A | 3M | Cloth | Steel, stainless, alu, titanium | Finishing, deburring, smoothing |
| Cubitron™ II 984F | 3M | Vulcanized fiber | Steel, stainless | Aggressive grinding, material removal |
| Trizact™ 337DC | 3M | Film | Metals, composites | Superfinishing, polishing |
| Norzon® R822 | Norton | Cloth | Steel, stainless | General industrial sanding |
Comparison: Cubitron™ II 947A vs. other cloth-backed abrasive discs
The market for cloth-backed abrasive discs is dense. To help you choose, here is how the Cubitron™ II 947A compares to its main competitors.
Comparative table of the main cloth abrasive discs on the market
| Product | Manufacturer | Abrasive | Backing | Available grits | Target materials | Strengths |
|---|---|---|---|---|---|---|
| Cubitron™ II 947A | 3M | Precision ceramic grain | Robust polyester cloth | P36 to P120 | Stainless steel, steel, alloys | Aggressive cutting, long life |
| Cubitron™ II 984F | 3M | Precision ceramic grain | Vulcanized fiber | P24 to P80 | Steel, stainless, hard metals | Maximum material removal |
| Trizact™ 337DC | 3M | Structured micro-minerals | Polyester film | A6 to A45 | Metals, composites | Ultra-fine finish, homogeneous surface |
| Ceramic Abrasive Grain Disc | Norton (Saint-Gobain) | Ceramic | Polyester cloth | P40 to P120 | Steel, stainless | Good durability/price ratio |
| Hermes RB 406 J | Hermes Abrasives | Semi-friable aluminum oxide | Cotton/polyester cloth | P40 to P150 | Metals, hardwoods | Versatility, good flexibility |
The 947A stands out for its precision ceramic grain, shaped into oriented triangles. It cuts faster and wears slower than conventional aluminum oxide grains.
Compared to the 984F (same Cubitron™ II range), the 947A on cloth backing offers better flexibility for complex profiles. The fiber-backed 984F remains better suited for flat surfaces requiring rapid roughing.
Against Norton ceramic or Hermes aluminum oxide discs, the 947A shows a significantly longer service life on stainless steel and difficult alloys. Fewer abrasive changes, less machine downtime.
Usage tips and best practices for optimizing disc life
The Cubitron™ II 947A disc is designed to last, but a few simple habits will help you get the most out of it.
Always work at a 5 to 15° angle of attack relative to the surface. A too-flat angle reduces cutting efficiency, while a too-steep angle wears down the grains prematurely.
Let the disc do the work with its own weight. Pressing excessively on the tool does not speed up material removal, it generates heat and deteriorates the Precision-Shaped Grain™ triangular grains.
Check the rotation speed of your sander before use. Do not exceed the maximum speed indicated on the disc. Excess speed weakens the cloth backing and reduces service life.
Clean the disc regularly using an abrasive cleaning stick. Clogging by grinding residues is the primary cause of performance loss in this type of disc.
Store your discs flat, away from moisture and UV light. The cloth backing is sensitive to humidity variations, which can warp the disc and compromise its adhesion to the sander.
Finally, replace the disc as soon as you notice a loss of bite or burn marks on the workpiece. Continuing to work with a worn disc degrades the finish and puts unnecessary strain on your machine.
FAQ - 3M™ Cubitron™ II 947A cloth-backed abrasive disc
1. What is the difference between the Cubitron™ II 947A and a conventional abrasive disc?
The Cubitron™ II 947A uses precision-shaped triangular grains, unlike the random grains of conventional abrasives. These grains slice through material rather than rubbing it, resulting in faster material removal and a cleaner surface.
2. Which materials can the 947A be used on?
This disc is primarily designed for stainless steel, alloy steel, and ferrous metals. Its robust cloth backing also allows it to withstand high-pressure applications. It is not recommended for aluminum or very soft materials.
3. Why choose a cloth backing rather than a paper backing?
The cloth backing offers significantly better tear and flex resistance than paper. It supports repeated mechanical stress, sharp edges, and irregular surfaces. It is the right choice for intensive work in workshops or production.
4. Which grit should I choose for my application?
For fast roughing, choose a coarse grit (36 to 60). For intermediate finishing, grits 80 to 120 are better suited. The 947A is available in several grits: choose based on the desired surface state and the material treated.
5. Is the 947A compatible with all belt sanders?
Yes, provided that the disc or belt dimensions match your machine. Always check the width and length required by your equipment before use. At Dagobert Industrie, references are clearly marked to facilitate selection.
6. What is the service life of the Cubitron™ II 947A compared to a standard abrasive?
Thanks to 3M™ precision-shaped grain technology, the 947A lasts significantly longer than conventional aluminum oxide abrasives. The grains self-sharpen by fracturing, maintaining high performance throughout the life of the disc and reducing frequent abrasive changes.
Quick order
All references for this product. Indicate your quantities and add everything to the cart at once.
| Ref. | Grain | Diameter (mm) | Fixation – Perforation | Availability | Price | Quantity | |
|---|---|---|---|---|---|---|---|
| P40 / 38 / Roloc TS – Solid | 3M_7100077042 | P40 | 38 | Roloc TS – Solid | On order | €79,00 | |
| P40 / 50 / Roloc TR – Solid | 3M_7100077039 | P40 | 50 | Roloc TR – Solid | On order | €79,00 | |
| P40 / 50 / Roloc TS – Solid | 3M_7100077043 | P40 | 50 | Roloc TS – Solid | On order | €79,00 | |
| P40 / 75 / Hook-and-loop – 3 Holes | 3M_7100113118 | P40 | 75 | Hook-and-loop – 3 Holes | On order | €29,25 | |
| P40 / 75 / Hook-and-loop – Solid | 3M_7100113114 | P40 | 75 | Hook-and-loop – Solid | In stock | €29,25 | |
| P40 / 75 / Roloc TR – Solid | 3M_7100077040 | P40 | 75 | Roloc TR – Solid | On order | €49,00 | |
| P40 / 114 / Hook-and-loop – Solid | 3M_7100169959 | P40 | 114 | Hook-and-loop – Solid | On order | €51,75 | |
| P40 / 125 / Hook-and-loop – 5 Holes | 3M_7100113110 | P40 | 125 | Hook-and-loop – 5 Holes | On order | €53,75 | |
| P40 / 125 / Hook-and-loop – Solid | 3M_7100113120 | P40 | 125 | Hook-and-loop – Solid | In stock | €53,75 | |
| P40 / 150 / Hook and loop – 6 holes | 3M_7100113143 | P40 | 150 | Hook and loop – 6 holes | On order | €81,50 | |
| P40 / 150 / Hook-and-loop – Solid | 3M_7100113121 | P40 | 150 | Hook-and-loop – Solid | In stock | €81,50 | |
| P60 / 38 / Roloc TS – Solid | 3M_7100076920 | P60 | 38 | Roloc TS – Solid | On order | €79,00 | |
| P60 / 50 / Roloc TR – Solid | 3M_7100077047 | P60 | 50 | Roloc TR – Solid | In stock | €79,00 | |
| P60 / 50 / Roloc TS – Solid | 3M_7100076921 | P60 | 50 | Roloc TS – Solid | On order | €79,00 | |
| P60 / 75 / Hook-and-loop – Solid | 3M_7100113109 | P60 | 75 | Hook-and-loop – Solid | In stock | €29,25 | |
| P60 / 75 / Roloc TR – Solid | 3M_7100076898 | P60 | 75 | Roloc TR – Solid | On order | €49,00 | |
| P60 / 125 / Hook-and-loop – 5 Holes | 3M_7100113096 | P60 | 125 | Hook-and-loop – 5 Holes | On order | €53,75 | |
| P60 / 125 / Hook-and-loop – Solid | 3M_7100113137 | P60 | 125 | Hook-and-loop – Solid | In stock | €53,75 | |
| P60 / 150 / Hook and loop – 6 holes | 3M_7100113076 | P60 | 150 | Hook and loop – 6 holes | On order | €81,50 | |
| P60 / 150 / Hook-and-loop – Solid | 3M_7100113142 | P60 | 150 | Hook-and-loop – Solid | On order | €81,50 | |
| P80 / 38 / Roloc TS – Solid | 3M_7100076928 | P80 | 38 | Roloc TS – Solid | On order | €79,00 | |
| P80 / 50 / Roloc TR – Solid | 3M_7100076925 | P80 | 50 | Roloc TR – Solid | In stock | €79,00 | |
| P80 / 50 / Roloc TS – Solid | 3M_7100076929 | P80 | 50 | Roloc TS – Solid | On order | €79,00 | |
| P80 / 75 / Hook-and-loop – Solid | 3M_7100113126 | P80 | 75 | Hook-and-loop – Solid | In stock | €29,25 | |
| P80 / 75 / Roloc TR – Solid | 3M_7100076926 | P80 | 75 | Roloc TR – Solid | In stock | €49,00 | |
| P80 / 114 / Hook-and-loop – Solid | 3M_7100169962 | P80 | 114 | Hook-and-loop – Solid | On order | €51,75 | |
| P80 / 125 / Hook-and-loop – Solid | 3M_7100112980 | P80 | 125 | Hook-and-loop – Solid | In stock | €53,75 | |
| P80 / 150 / Hook and loop – 6 holes | 3M_7100113107 | P80 | 150 | Hook and loop – 6 holes | On order | €81,50 | |
| P80 / 150 / Hook-and-loop – Solid | 3M_7100113080 | P80 | 150 | Hook-and-loop – Solid | In stock | €81,50 | |
| P120 / 38 / Roloc TS – Solid | 3M_7100076936 | P120 | 38 | Roloc TS – Solid | On order | €79,00 | |
| P120 / 50 / Roloc TR – Solid | 3M_7100076933 | P120 | 50 | Roloc TR – Solid | In stock | €79,00 | |
| P120 / 50 / Roloc TS – Solid | 3M_7100076937 | P120 | 50 | Roloc TS – Solid | On order | €79,00 | |
| P120 / 75 / Hook-and-loop – 3 Holes | 3M_7100113113 | P120 | 75 | Hook-and-loop – 3 Holes | On order | €29,25 | |
| P120 / 75 / Hook-and-loop – Solid | 3M_7100113117 | P120 | 75 | Hook-and-loop – Solid | On order | €29,25 | |
| P120 / 75 / Roloc TR – Solid | 3M_7100076934 | P120 | 75 | Roloc TR – Solid | In stock | €49,00 | |
| P120 / 114 / Hook-and-loop – Solid | 3M_7100169949 | P120 | 114 | Hook-and-loop – Solid | On order | €51,75 | |
| P120 / 120 / Hook-and-loop – Solid | ABDIS9357 | P120 | 120 | Hook-and-loop – Solid | On order | €60,50 | |
| P120 / 125 / Hook and Loop – 5 Holes (ref. 7100113075) | 3M_7100113075 | P120 | 125 | Hook and Loop – 5 Holes (ref. 7100113075) | On order | €53,75 | |
| P120 / 125 / Hook-and-loop – 5 Holes (ref. 7100113111) | 3M_7100113111 | P120 | 125 | Hook-and-loop – 5 Holes (ref. 7100113111) | In stock | €53,75 | |
| P120 / 125 / Hook-and-loop – Solid | 3M_7100085514 | P120 | 125 | Hook-and-loop – Solid | In stock | €53,75 | |
| P120 / 150 / Hook-and-loop – Solid | 3M_7100113139 | P120 | 150 | Hook-and-loop – Solid | In stock | €81,50 |
Taxes included. Discounts and shipping calculated at checkout.
Need some advice?
Any doubts about a part number or quantity? Our technicians are available to help at 04 50 52 70 89, and we provide quotes for bulk orders within 24 hours.
- Quote within 24 hours
- Dedicated professional rates
- Technical advice by phone
Frequently Asked Questions
Any other questions?
Call us at 04 50 52 70 89 or write to contact@dagobertindustrie.com.
What are the shipping costs and delivery times?
In-stock items are delivered in 48-72 hours. Made-to-order items are delivered within 2 to 3 weeks. DPD delivery costs €5.95 incl. VAT and is free on purchases of €49 incl. VAT or more.
How to choose the right reference?
The specifications for each reference are detailed in the data sheet and the quick order table. If in doubt, call us at +33 4 50 52 70 89: we will guide you to the reference best suited to your application.
Can I order several items at once?
Yes: the quick order pad lists all part numbers. Enter a quantity for each, then add them all to your cart in one click.
I am a professional, can I get a quote?
Yes, email us at contact@dagobertindustrie.com: we will respond within 24 hours. A business account gives you access to your net prices excluding tax.
Can I return a product?
Individuals have 14 days from receipt to withdraw. The product must be new, complete, and in its original packaging. Consult our refund policy.
Is the payment secure?
Yes. Payment is encrypted by our payment provider: we never have access to your bank details.
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