Mirka® DEROS II 680 orbital sander

Mirka DEROS II 680 Orbital Sander-8.0 mm Orbit, Ø 150 mm

The Mirka DEROS II 680 is an electric orbital sander built for professionals who refuse to compromise on finish quality.

With an 8.0 mm orbit and a Ø 150 mm pad, it covers ground quickly and sands finely, making it ideal for automotive, wood, or composite surfaces.

Its brushless motor and integrated dust extraction system make it a clean, powerful, and durable tool for daily use.

Introducing the Mirka DEROS II 680: A High-Performance Orbital Sander

The Mirka DEROS II 680 is an electric orbital sander designed for demanding professionals. With an 8.0 mm orbit and a Ø 150 mm pad, it offers fast material removal while maintaining a clean finish.

It is the go-to tool for automotive, cabinet making, and any application requiring aggressive sanding for finishing. It adapts just as well to large flat surfaces as it does to preparation work before painting.

Brushless motor and integrated central vacuum technology

The DEROS II 680's brushless motor delivers constant power regardless of the pressure applied. With no brushes to replace, maintenance is reduced and the tool's lifespan is significantly extended.

The integrated central vacuum extracts dust directly at the source, at the center of the pad. The result: a healthier work environment and abrasives that last longer.

Key highlights of this machine:

• Adjustable speed to adapt to every material
• Compact weight to reduce fatigue during long sessions
• Mirka ABRANET compatibility and the entire range of Ø 150 mm abrasives
• Ergonomic housing with anti-slip grip
• Direct connection to a vacuum cleaner via the extraction port

Model	Orbit	Pad	Motor	Primary Use
Mirka DEROS II 680	8.0 mm	Ø 150 mm	Brushless	Material removal + finish
Mirka DEROS II 650	5.0 mm	Ø 150 mm	Brushless	Fine finishing, delicate surfaces
Festool ETS EC 150/5	5.0 mm	Ø 150 mm	Brushless	High-precision finishing
Bosch GEX 150 AC	2.5 mm	Ø 150 mm	Brushed	Light finishing, occasional use

Detailed technical specifications of the DEROS II 680

The Mirka DEROS II 680 is an electric random orbital sander designed for demanding professionals. It features a 680 W brushless motor for constant power, regardless of the workload.

Its Ø 150 mm pad and 8.0 mm orbit offer an excellent compromise between material removal speed and finish quality. Ideal for sanding medium to large surfaces.

Speed is adjustable from 4,000 to 10,000 rpm via an electronic dial. Maintained speed under load ensures a consistent cut, even on difficult passes.

The Mirka integrated extraction system interfaces directly with compatible extractors. The perforated backing pad ensures optimal dust collection right at the source.

• Motor: brushless, 680 W
• Pad diameter: 150 mm
• Orbit: 8.0 mm
• Speed range: 4,000-10,000 rpm
• Abrasive attachment: Velcro (hook-and-loop)
• Weight: approx. 1.3 kg
• Power supply: 230 V / 50 Hz

Model	Motor	Orbit	Diameter	Primary Use
Mirka DEROS II 680	680 W (brushless)	8.0 mm	150 mm	Intensive sanding, large surfaces
Mirka DEROS II 550	550 W (brushless)	5.0 mm	150 mm	Fine finishing, automotive
Festool ETS EC 150/5	400 W (brushless)	5.0 mm	150 mm	Finishing, wood and lacquer
Bosch GEX 150 AC	400 W	6.0 mm	150 mm	General use, versatile

With 680 W and an 8 mm orbit, the DEROS II 680 is clearly positioned in the high-performance category. It outperforms entry-level sanders in material removal while maintaining a polished finish.

Comparison: Mirka DEROS II 680 versus other models in the DEROS II range

DEROS II 650 vs DEROS II 680: which orbit difference to choose?

The Mirka DEROS II range offers two main orbits: 5.0 mm (model 650) and 8.0 mm (model 680). This single figure radically changes the usage.

The DEROS II 650 is tailored for fine finishing: sanding between varnish coats, automotive polishing, fragile surfaces. Its tight movement generates little heat and leaves a nearly flawless surface.

The DEROS II 680, with its 8.0 mm orbit, removes much more material per pass. It is made for stock removal, leveling, and sanding large surfaces: solid wood, MDF, car bodywork before primer.

Model	Orbit	Pad Ø	Primary Use	Recommended Grit
Mirka DEROS II 650	5.0 mm	150 mm	Finishing, inter-coat, automotive	P180, P400
Mirka DEROS II 680	8.0 mm	150 mm	Stock removal, leveling, large surfaces	P80, P180
Festool ETS EC 150/5	5.0 mm	150 mm	Wood and lacquer finishing	P150, P400
Festool ETS EC 150/3	3.0 mm	150 mm	Ultra-fine finishing, varnish	P240, P600

The rule is simple: the larger the orbit, the faster the material removal, but the final surface is less smooth. The 680 saves time on large surfaces; you then finish with the 650 if the final finish requires it.

For a workshop that only wants one machine, the DEROS II 680 is the most versatile choice: it covers 80% of common work for the carpenter, auto body repairer, or furniture maker.

Applications and materials: wood, metal, plaster, and automotive

The Mirka DEROS II 680 is a sander designed to work on a wide range of surfaces. Its 8.0 mm orbit and Ø 150 mm pad make it efficient in very different contexts.

On wood, it excels in furniture making, carpentry, and interior outfitting. It ensures a homogeneous finish without swirl marks, even on sensitive wood species.

On metal, it prepares surfaces before treatment, stripping, or painting. The absence of excessive vibrations limits fatigue during long sessions.

In automotive applications, it integrates naturally into inter-coat sanding and lacquer finishing processes. The 8.0 mm orbit removes material faster than a 5.0 mm, without sacrificing the final result.

On plaster and fillers, it quickly flattens joints and irregularities. Coupled with a vacuum system, it keeps the job site clean.

Here is an overview of uses according to the surface:

• Solid wood / panels: stock removal, finishing, inter-coat varnish sanding
• Metal / steel: surface preparation, removal of light corrosion
• Automotive: primer sanding, lacquer finishing, scratch removal
• Plaster / filler: joint smoothing, repair sanding
• Composites / plastics: light finishing, bonding preparation

Model	Orbit	Primary Use	Material Removal	Finish
Mirka DEROS II 680	8.0 mm	Automotive, wood, metal	★★★★☆	★★★★☆
Mirka DEROS II 550	5.0 mm	Fine finishing, varnish	★★★☆☆	★★★★★
Festool ETS EC 150/5	5.0 mm	Wood / lacquer finishing	★★★☆☆	★★★★★
Festool ETSC 125/3	3.0 mm	Ultra-fine finishing	★★☆☆☆	★★★★★

Compatible accessories and recommended consumables for the DEROS II 680

The Mirka DEROS II 680 accepts Ø 150 mm abrasive discs with Velcro interface. To fully exploit the machine, you must choose the right consumables.

Mirka offers its Abranet range: an abrasive with a net structure that extracts dust directly through the disc. Result: less clogging, a cleaner surface, and an extended service life.

For finishing on varnish or paint, the Mirka Basecut and Mirka Galaxy discs are particularly suitable. They handle heat well and keep their bite longer than conventional abrasives.

Here are the consumables and accessories to plan for with the DEROS II 680:

• Abranet discs Ø 150 mm, grits 80 to 400, for wood and automotive use
• Galaxy discs Ø 150 mm, grits 80 to 1000, for paint and varnish finishing
• Basecut discs Ø 150 mm, grits 40 to 320, for rapid stock removal
• Replacement backing pad Ø 150 mm, replace as soon as the Velcro wears out
• Collection bag or dust extractor, compatible with Ø 27 mm connection

Abrasive	Available Grits	Recommended Materials	Key Highlight
Mirka Abranet	80-400	Wood, MDF, automotive	Through-extraction, anti-clogging
Mirka Galaxy	80-1000	Varnish, paint, plastic	Ultra-smooth finish, long life
Mirka Basecut	40-320	Raw wood, composites	Aggressive and fast stock removal
Mirka Goldflex	80-400	Metal, lacquered wood	Flexibility, ideal for curved shapes

At Dagobert Industrie, we carry all these Mirka consumables to ensure you work with discs perfectly adapted to your machine.

FAQ - Mirka DEROS II 680 Orbital Sander

1. What is the difference between the DEROS II 680 and the DEROS II 650?

The main difference lies in the orbit: 8.0 mm for the 680, versus 5.0 mm for the 650.

A larger orbit means a higher rate of material removal. The 680 is therefore tailored for stock removal, large surfaces, and aggressive sanding.

The 650 is better suited for fine finishing and automotive work where precision is paramount.

2. Is the DEROS II 680 suitable for automotive professionals?

Yes, but with a nuance. Its 8.0 mm orbit makes it particularly efficient for sanding large bodywork areas quickly.

For finishing or polishing stages, you would prefer the DEROS II 650 or a sander with an even finer orbit.

The 680 remains a benchmark tool in automotive repair for sanding primers and fillers.

3. Which abrasive should I use with the Mirka DEROS II 680?

Mirka recommends its Abranet or Galaxy discs in Ø 150 mm, compatible with the machine's Velcro attachment.

For general sanding, start with grit P80 to P150. To refine before painting, go up to P240 or P320.

Abranet is particularly appreciated for its optimal dust extraction thanks to its net structure.

4. Does the DEROS II 680 require a compressor?

No. It is an electric tool, powered directly from the mains. No need for a compressor or compressed air network.

This is one of its great advantages over pneumatic sanders: it can be used anywhere, without specific infrastructure.

5. What suction system should I connect to the DEROS II 680?

Mirka recommends coupling it to a compatible vacuum, ideally the Mirka DE or DECO range, for optimal extraction.

The machine has an integrated suction connection. Proper extraction extends the lifespan of the abrasives and improves surface quality.

Any vacuum with an adapted connection and sufficient airflow will do the job, but Mirka models are designed to operate as a closed system with the DEROS II.

6. Why choose the Mirka DEROS II over a classic orbital sander?

The DEROS II features a brushless motor: quieter, more durable, and with better speed regulation under load.

Its reduced weight and ergonomics, designed for intensive use, limit fatigue during long work sessions.

Compared to a classic brushed sander, it offers a significantly longer lifespan and less vibration.