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Model#: FESN571823

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Festool RO 90 DX Rotex 3-1/2 in. Multi-Mode Sander

Model#: FESN571823
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Product Overview


The only professional sander that sands open spaces as easily as it conquers corners.
How do you seamlessly move between rough sanding and finish sanding without switching tools? It's easy with the Rotex RO 90 DX Multi-Mode Sander. Nothing short of an engineering marvel, the RO 90 DX easily switches between aggressive sanding action for paint, varnish or wood removal to fine sanding action for smooth finish sanding. Equip the RO 90 DX with polishing pads, sponges, felts or sheepskin to get astonishing finishes that gleam with brilliance.
  • Change between aggressive gear-driven mode, random orbital mode, polishing mode, and delta gear-driven orbit mode for endless capabilities with any application
  • Sealed metal tool housing protects the gears to provide power and durability
  • Multi-Material Control (MMC) electronics provide soft-start and step-less variable speed control while maintaining constant load speeds and providing thermal/overload protection
  • Minimal vibration and ambidextrous operation provide comfortable operation with maximum control for any user
  • Plug-It interchangeable power cord fits various Festool tools for quick and easy tool changes
  • Rotex RO 90 DX 3-1/2 in. Multi-Mode Sander - 571823
  • SYS-2 T-Loc Systainer
  • StickFix Sanding Pad
  • StickFix V93 Delta Sanding Pad
  • Edge Protector
  • Plug-It Power Cord


Series: Rotex
Weight: 1.5 kg
Pad Diameter: 3.5 in. (90mm)
Rotary Speed: 260 - 520 RPM
Sanding Stroke: 1/8 in. (3mm)
Shipping Weight: 8.55 lbs.
Speed Eccentric Motion: 3,500 - 7,000 RPM

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Questions & Answers

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1 Question | 1 Answer
Displaying question 1
  • Rotex 3-1/2 in. Multi-Mode Sander


    will this adapt to the 36 mm antistatic hose from my ct 36
    Asked on 3/15/2015 by guy

    1 answer

    • Staff Reviewer


      Yes it will.

      Answered on 3/16/2015 by Ray from Atlanta
Displaying question 1

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Festool Warranty

Festool offers a 3-year warranty, one of the longest in the industry. This warranty is valid on the pre-condition that the tool is used and operated in compliance with the Festool operating instructions. Festool warrants that the specified tool will be free from defects in materials and workmanship for a term of 3 years from the date of purchase.

Conditions of 1 + 2 warranty

You are entitled to a free extended warranty (1 year + 2 years = 3 years) for your Festool power tool. Festool is responsible for all shipping costs during the first year of the warranty. During the second and third year of the warranty the customer is responsible for shipping the tool to Festool. Festool will pay for return shipping to the customer using UPS Ground Service. All warranty service is valid 3 years from the date of original purchase on your receipt or invoice.

Festool makes no other warranty, express or implied, for Festool portable power tools. No agent, representative, distributor, dealer, or employee of Festool has the authority to increase or otherwise change the obligations or limitations of this warranty. The obligations of Festool in its sole discretion under this warranty shall be limited to the repair or replacement of any Festool portable power tool that is found to be defective as packaged with the User Manual.

Excluded from the coverage under this warranty are: normal wear and tear; damages caused by misuse, abuse, or neglect; damage caused by anything other than defects in material and workmanship. This warranty does not apply to accessory items such as circular saw blades, drill bits, router bits, jigsaw blades, sanding belts, and grinding wheels. Also excluded are "wearing parts," such as carbon brushes, lamellas of air tools, rubber collars and seals, sanding discs and pads, and batteries.

Festool portable power tools requiring replacement or repair are to be returned to Festool. Call (800) 554-8741 for address details. In no event shall Festool be liable for any consequential or incidental damages for breach of this or any other warranty, express or implied whatsoever. All warranties implied by state law, including the implied warranties of merchantability and fitness for a particular purpose are hereby limited to the duration of three years.

Some states in the U.S. do not allow the limitations on how long an implied warranty lasts, so the above limitation may not apply to you. With the exception of any warranties implied by state or province law as hereby limited, the foregoing express limited warranty is exclusive and in lieu of all other warranties, guarantees, agreements, and similar obligations of Festool.

This warranty gives you specific legal rights and you may also have other rights that vary from state to state in the U.S.