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Cardboard box
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Product information

The Mirka AROS-B 325 77 mm cordless random orbital sander is a compact and powerful random orbital sander designed for precise sanding work in professional applications. With a sanding pad diameter of 77 mm and an eccentric stroke of 2.5 mm, the tool is particularly suitable for fine surface finishing, spot repair applications and finishing work in the paint and bodywork sectors.

The sander is powered by a high-performance 12 V brushless motor and operates cordlessly with Mirka battery systems. Its compact design, low vibration levels and light weight enable ergonomic working even over longer periods.

System & Operating Principle

The Mirka AROS-B 325 operates on the random orbital principle. The machine combines a rotational movement with an eccentric oscillating movement, resulting in a uniform sanding finish without sanding marks.

The small stroke of 2.5 mm ensures a particularly fine surface finish and is ideal for finishing, intermediate and spot repair work.

Typical applications

• Spot repairs in the automotive sector
• Paint finishing and intermediate finishing
• Bodywork and smart repair work
• Fine finishing of small areas
• Furniture and surface finishing

Key technical specifications

• Sanding pad: 77 mm (3")
• Eccentric stroke: 2.5 mm
• Power source: 12 V cordless system
• Motor: Brushless motor
• Application: Fine sanding / spot repair

Diameter: 77mm
Item type: Exzenterschleifer
Performance: 12 V
More information
  • Product number: 2188141
  • Manufacturer: Mirka

Technical details

CharacteristicSpecification
ManufacturerMirka
ProductMirka® AROS-B 325 Ø 77 mm max 12V stroke 2.5 mm
Manufacturer’s No.8991153252
Battery voltagemax 12 V DC
Dust extraction systemNo extraction
Max. speed7,000 rpm
Min. speed4,000 rpm
Sound pressure level LpA61.0 dB
Stroke2.5 mm
Type of movementEccentric
Sanding disc diameter77 mm
Sanding discs included8294791211
Tool holder6 mm
Vibration level1.6 m/s²
Weight0.88 kg
Battery includedNo
Packaging typeCardboard box
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