In the world of concrete floor preparation — whether you’re stripping coatings, levelling slabs, or prepping for polished finishes — productivity, control, and operator comfort matter. At Cutting Edge Diamond Tools, we only stock the high-performance version of the 680-RC remote control grinder because we’ve seen firsthand how much of a difference it makes on real job sites.
In this post, we’ll unpack what makes the high-performance 680-RC a step up, and why it’s worth serious consideration if you’re in the market for a big-area concrete grinder.
What Is the 680-RC Remote Control Grinder?
The 680-RC series is a remote-controlled, planetary concrete floor grinder with a 680 mm working width, designed for medium to large surface prep applications. With remote control operation, you manage movement, direction, and speed from a distance — freeing you from constantly supervising the machine behind it.
While the standard 680-RC can be ordered if that suits your needs, we stock only the high-performance version because it delivers higher output, robust components, and more capability out of the box. More on that below.
Key Features of the High-Performance 680-RC
Here’s what sets the high-performance 680-RC apart:
• Upgraded 15 kW Motor
The high-performance model features an upgraded 15 kW three-phase motor. This extra power translates into better torque, stronger grinding force, and improved performance on demanding jobs such as coating removal, heavy levelling, and industrial surface prep.
• Wide Working Speed Range
This grinder offers a variable working speed range from 350 – 1680 RPM, enabling you to adjust for more aggressive material removal or finer prep work as required.
• Four-Head Planetary Grinding System
Equipped with four grinding heads and larger plates (Ø 278 mm), the machine increases coverage and improves productivity over longer runs compared to three-head units.
• Remote Control Operation
Traditional grinders keep operators tethered to the unit, managing hoses, cables, and movement at your feet. With remote control operation, you stand back, reduce operator fatigue, and maintain better sightlines on large surfaces — leading to more consistent results.
• Built-In Water Tank
For jobs where dust control or wet grinding is required, the integrated 20 L water tank offers controlled application of water to minimise dust and support cooler grinding.
• Heavy-Duty Build
With a weight of around 556 kg, this machine stays stable on larger areas, reducing vibration and ensuring even contact with the floor throughout the grinding process.
Why Upgrade Instead of Buying a Standard Model?
Here’s why many contractors opt for the high-performance unit instead of the standard 680-RC:
1. Higher Productivity
More power and a larger planetary head system means you can cover more ground faster and tackle higher-resistance materials with less strain.
2. Better for Heavy Coating Removal
If you frequently remove epoxies, glue residues, or curing compounds, the high-performance motor and RPM range give you more tools in your toolbox to handle tough surfaces.
3. Reduced Operator Fatigue
Remote control operation combined with a strong running weight and power output reduces the physical effort required — especially over large floor areas. This helps keep crews productive throughout the day.
4. Longer-Term Investment
Although upfront it costs more than a standard model, the high-performance version holds up better over heavy cycles, minimising downtime and service costs.
What Comes With the Machine from Us
When you purchase the high-performance 680-RC from Cutting Edge Diamond Tools, you don’t just get a grinder — you get local support:
- Four demo grinding heads included
- Maintenance bag to keep essential tools together
- Full warranty backing
- Access to our expert technical advice
- Spare parts and consumables stocked locally
This means less waiting, faster support, and better uptime on the tools you rely on.
Can I Order the Standard 680-RC Instead?
Yes — if your budget or job profile calls for a standard 680-RC, we can definitely order one in for you. It’s a capable machine with 680 mm working width and remote control operation. But for crews that rely on heavy-duty performance, we find the high-performance version delivers a better return on investment over the long run.
In Summary
If your work involves:
- Large floor areas
- Frequent coating removal
- Industrial or commercial surface prep
- Jobs where operator fatigue matters
…then upgrading to the high-performance 680-RC makes sense. More power, more control, and better support from us mean you’re set up for the realities of tough jobs — not just light work.
Want to talk through whether this is the right grinder for your fleet? Get in touch with the team — we’ve been in the concrete prep world and can help match the machine to the job.
