Multi-Blade Diamond Grinding Drum vs. PCD Tools: Which Gives You Better Value for Epoxy Coating Removal?
If you've been sourcing tools for epoxy floor coating removal, you know PCD (Polycrystalline Diamond) tools have been the industry default for years. They're aggressive, fast, and effective — but they come with a cost structure that doesn't always add up on large-scale jobs.
A different category of tooling is now changing that equation: the Multi-Blade Diamond Grinding Drum. Here's a detailed comparison to help you decide which is right for your project.
Understanding Each Tool
PCD Coating Removal Tools use polycrystalline diamond cutters mounted on disc-style holders. They attack coatings with point-contact pressure and are particularly aggressive on thick, stubborn epoxy. They're the tool of choice for localized, high-intensity removal — and SUNNY manufactures a full range of them, available on this site.
The SUNNY Multi-Blade Diamond Grinding Drum takes a fundamentally different approach. Rather than a disc with a few cutting points, it's a cylindrical drum — approximately 230mm wide and 320mm tall — built from dozens of stacked, interlocked diamond blade segments. Every rotation brings hundreds of cutting edges into simultaneous contact with the floor surface across a wide working path.
The Core Difference: Coverage
This is where the comparison becomes interesting.
To cover a 320mm working width with PCD disc tools, you need to assemble multiple individual PCD holders or discs on your machine. Each one costs money. Combined, the total PCD tooling investment to match the working width of a single Multi-Blade Diamond Grinding Drum can be considerably higher — and you're still managing multiple separate tool components.
The SUNNY Multi-Blade Diamond Grinding Drum achieves that same working coverage as single unit. One tool, one installation, one purchase.
For contractors working on large warehouse floors, commercial renovations, or industrial facility preparation — where you're removing epoxy across hundreds or thousands of square meters — this cost difference per unit of working width is meaningful.
| Factor | PCD Tools | Multi-Blade Diamond Drum |
| Working width per unit | Limited — multiple units needed for wide coverage | Up to 320mm from a single drum |
| Tool setup | Multiple holders required | Single bolt-on installation |
| Tooling cost for wide-area jobs | Higher — several PCD units needed | Lower — one drum replaces multiple PCD units |
| Epoxy removal performance | Excellent, highly aggressive | Excellent, consistent across full drum width |
| Best suited for | Spot removal, localized buildup | Large continuous floor areas |
| Customization | Custom | Fully custom diameter, height, bond spec |
| Debris evacuation | Depends on disc design | Open matrix structure — continuous clearance |
When to Use Each Tool
Choose PCD when: You have localized coating buildup, a small treatment area, or you need maximum aggression in a confined spot. PCD's point-contact geometry delivers concentrated cutting force that's hard to match for these scenarios. SUNNY's PCD range is purpose-built for these situations.
Choose the Multi-Blade Diamond Grinding Drum when: You're facing a large floor area with epoxy coating to remove uniformly. The drum's wide coverage, consistent cutting depth, and lower total tooling cost per square meter make it the more economical and efficient choice for commercial and industrial scale work.
The Bottom Line
PCD tools and the Multi-Blade Diamond Grinding Drum are not competitors in the traditional sense — they solve the same problem but at different scales. The key insight that most in the industry haven't yet fully addressed is this: for large-area epoxy removal, assembling enough PCD tooling to match the working width of a single grinding drum costs significantly more than the drum itself.
SUNNY now offers both. For sourcing advice on which configuration suits your specific project, contact our technical team directly.
📧 info@sunnydiamondtools.com | 📞 +86-595-22003682