Mirka DEROS II: random orbital sanders
Manufacturer information on versions, sanding orbit and machine equipment.
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Mirka® DEROS II 550 Electric eccentric - 125 mm stroke 5.0
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Mirka PROS 625CV 150-2.5 stroke, 48L - Compressed air
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€248.71*
€209.00*
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Mirka ROS 550CV 125-5,0 stroke- 12000 rpm
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€224.91*
€189.00*
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Mirka® DEROS II 650 150mm stroke 5.0 CH box - Electric random-orbit sander
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Mirka ROS 625CV 150-2.5 stroke, 52L
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€224.91*
€189.00*
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Mirka® DEROS II 750 175mm stroke 5.0 Case - Electric random-orbit sander
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Mirka AROS-B 350 77 mm max. 12 V (battery and charger not included)
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Finixa Pneumatic random orbital sanders Ø150mm - 2.5mm stroke
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€221.59*
€194.18*
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Mirka AROS-B 150NV 32mm 10.8V w/o Battery/Charger
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Mirka - Machinery | Electric sanders | Mirka DEROS II 5650 125/150mm Orbit 5.0 Case CH Case
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Mirka® DEROS RS 600 EU Ø 150 mm cardboard - rotary sander
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Mirka® DEROS RS 600 EU Ø 150 mm Case – Rotary sander
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Mirka ROS2 650CV 150-5.0 stroke, 52L, 12,000
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Mirka AROS-B 150NV 32mm 10.8V 2.5Ah Stroke 5.0
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Random orbital sanders – versatile surface sanding with a matched sanding orbit
Random orbital sanders combine eccentric motion with rotation of the backing pad. Applications include surface preparation, sanding between coats and targeted refinement of a scratch pattern. The right version depends on material, pad size, orbit and workload. Good results come from the right combination of sanding disc, pad and extraction, not from high speed alone.
Select the sanding orbit according to removal and finish
Larger and smaller orbits place different emphasis on removal and fine finishing. The actual effect also depends on grit, support, speed and material. Follow the intended applications of the specific model. An orbit value does not guarantee a particular finish and should not be assessed separately from the sanding task.
Consider pad diameter and contour together
A larger pad covers a different working area from a compact pad for smaller sections. Alongside diameter, pad hardness influences how well a surface can be kept flat or a contour followed. Change pad size only when the manufacturer approves it for the machine model; matching threads alone are not sufficient.
Check machine guidance and abrasive
Guide the machine steadily according to the instructions and avoid tilting it onto one side where possible. Excessive pressure can impair the intended motion and result. Foreign particles, damaged discs or clogged abrasives can cause visible marks. Clean and inspect the surface between sanding stages instead of compensating for defects solely through longer sanding.
Match the extraction arrangement to the disc
Disc, protective interface and pad form the start of dust capture. Choose a matching hole pattern or an approved mesh combination, and keep air paths clear. A flexible, correctly connected hose should not hinder guidance unnecessarily. The extractor's suitability for the dust generated remains decisive.
Manufacturers & system selection
- Mirka – The DEROS II product family includes electric random orbital sanders. Compare the specific version, sanding orbit and approved backing pad.
Guides & resources
Frequently asked questions: random orbital sanders
How does a random orbital sander differ from an orbital sander?
A random orbital sander uses a round pad and a combined motion. Orbital sanders use an oscillating sanding plate, often rectangular or triangular. This particularly affects surface contact and access to corners.
Which sanding orbit suits painted surfaces?
This depends on the removal objective and subsequent process. Manufacturers distinguish models or orbits for different working priorities. Coordinate the choice with the abrasive and coating system.
Can a soft interface always be fitted?
No. The interface must suit the machine and pad. It changes contact behaviour and may be unsuitable when flat sanding is required.
Customer feedback
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Tell us the material, required pad diameter and whether your priority is removal or fine sanding. We will help you choose a suitable random orbital sander.
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