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Compressed air eccentric sander LEX 3 125/3

Order number 691140
LEX 3 125/3

Set versions

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Items included

LEX 3 125/3
  • StickFix sanding pad Ø 125 mm (extra soft)
  • bottle of cleaning and lubricating oil LFC 9022 (50 ml)
  • screwdriver, WAF 5
  • Qty. in pack: 1.00 Pieces
  • in carton

Saves compressed air without affecting results.

Saves compressed air without compromising results. With a 3 mm sanding stroke, the LEX 3 125/3 compressed air eccentric sander creates a high-quality sanding finish, e.g. with the final sanding of filler in the four-step sanding process. With a 125 mm pad diameter it is also suitable for the fine and final sanding of roundings and for sanding blending zones. Weighing just 1 kg, with minimal vibration values, comfortably low noise levels, a robust and durable motor as well as extremely low compressed air consumption, it is ideal for the automotive sector as well as for kitchen and furniture assembly.

  • Low compressed air consumption ensures high cost savings
  • Low vibration levels and a pleasant operating noise protect the user's health
  • Extremely sturdy design ensures a long service life, minimal servicing requirements and high cost savings
  • Simplifies permanent dust extraction, guarantees the best working results and protects the user's health when combined with the IAS 3 light hose
  • High-quality FUSION-TEC sanding pad with MULTI-Jetstream principle ensures efficient dust extraction, minimises rework and saves on costs
  • Fine 3 mm sanding stroke produces a very high-quality sanding finish and saves on costs
  • Sanding pad brake reduces sanding errors when setting down the machine, thereby avoiding rework and additional costs
  • Note: an IAS 2/IAS 3 connecting system is required for operation

Product highlights

  • Achieve ideal results more quickly:

    Dust-free for first-class varnishing results: The IAS system guarantees perfect dust extraction and compressed air supply.

  • Convenient and safe:

    Lightweight, handy, low-vibration, quiet – for fast work and a healthy working environment.

  • Systems get it done:

    Perfectly matched: Tool, sanding pad and abrasive – for gleaming results and considerable time savings.

Product details

  • Extremely robust and durable

    The low-maintenance and robust motor with double-sealed bearings and high speed rigidity minimises downtimes and guarantees a long service life.

  • Three functions in one: The IAS system

    The IAS three-hose system combines three functions in a single hose: Compressed air supply, exhaust air extraction and dust extraction. Sanding dust and exhaust air are kept away from the work surface. Thanks to an intelligently designed exhaust air extraction system, no cold air escapes: Hands and wrists stay warm, work is more comfortable and better for health.

  • Designed to fit your hand

    Accurate guidance and precise sanding thanks to SoftGrip coating on the device. The well-balanced ergonomics also ensure effortless work.

  • Minimal compressed air consumption

    Less is more. The LEX 3 125 has the lowest compressed air consumption of them all: Just 290 l/min. That's approx. 30% less than devices from other manufacturers – which saves a lot of money.

  • Maximum surface quality

    The unique sanding pad brake prevents the sanding pad from turning upwards and prevents the surface being scratched during sanding, thereby minimising both reworking and costs.

  • Pad hardnesses for every application

    Hard, soft, ultra-soft. Festool offers sanding pads with three different degrees of hardness for work that is optimally adapted to the material and surface.

  • Speed adjustment during sanding

    The ergonomic position of the speed pre-selection enables infinite adjustment with the thumb, even during sanding.

  • Clearly visible stroke indicator

    The sanding stroke is printed on the head of the ergonomic dead-man switch as a clearly legible number. The dead-man switch is also used as a variable speed trigger for controlled sanding.

Main applications

  • Fine and final sanding, ideal for curves
  • Final sanding of filler, e.g. in 4-step sanding system
  • Light sanding of blending zones
  • Sanding high-gloss surfaces ready for polishing
  • Sanding wooden surfaces ready for waxing
  • Final sanding of clear coats, wood, plastic and mineral materials

Performance features

  • Antistatic function

    Mobile dust extractors and tools with the antistatic function to prevent static charge from accumulating when working.

  • Jetstream principle

    The 9-hole principle for reduced dust accumulation, less heat and less clogging. Up to a 30 % longer service life.

  • Vibration stop

    Patented VS balancing so that tools run smoothly during sanding, which makes working less hazardous.

  • StickFix STF

    Quick, economical fastening system for abrasives – no adhesives, no clamping.

  • Quick-acting brake

    For safe work when planing, sawing and routing.

  • IAS 3

    Hose system incorporates compressed air, dust extraction and exhaust air.

  • IAS 3 light

    Dust extraction, compressed air with external exhaust air dissipation.

Technical data

Operating pressure (flow pressure)
6.00 bar
No. of strokes
19 000 min⁻¹
Eccentric motion speed
9 500 min⁻¹
Sanding stroke
3.00 mm
Vibration emission value Ah (single-axle)
1.10 m/s²
Vibration emissions value Ah (three-axle)
3.60 m/s²
Air consumption at rated load
290.00 l/min
Sound pressure level
70.00 dB(A)
Sanding pad dia.
125.00 mm
1.00 kg

Noise and vibration values

Sanding: Uncertainty (noise) K
3.00 dB
Sanding: A-weighted sound pressure level, LpA
70.00 dB(A)
Sanding: A-weighted sound power level, LWA
81.00 dB(A)
Sanding: Total vibration average, Ah
4.40 m/s²
Sanding: Uncertainty (vibration) K
2.00 m/s²

Items included LEX 3 125/3


Compressed air eccentric sander

  • Accessories
    Sanding pad

    ST-STF 125/8-M8-J SW

  • Accessories
    Cleaning and lubricating oil

    LFC 9022/50


  • IAS hose IAS 3-5000 AS

    for LEX 3, LEX 2, LRS

    Order number: 497209

  • IAS hose IAS 3-3500 AS

    for LEX 3, LEX 2, LRS

    Order number: 497208

  • IAS hose IAS 3-7000 AS

    for LEX 3, LEX 2, LRS

    Order number: 497210

  • IAS hose IAS 3 light 3500 AS

    for LEX 3, LEX 2, LRS

    Order number: 497478

  • Adapter IAS 3-FA

    for LEX 3, LEX 2, LRS

    Order number: 499025

  • Sanding pad ST-STF 125/8-M8-J W-HT

    for ETS EC 125, LEX 125

    Order number: 492286

  • Sanding pad ST-STF 125/8-M8-J H

    for ETS EC 125, LEX 125

    Order number: 492284

  • IAS hose IAS 3 light 10000 AS

    for LEX 3, LEX 2, LRS

    Order number: 497480

  • IAS adapter IAS 3-SD

    for LEX 3, LEX 2, LRS

    Order number: 497214

  • Interface pad IP-STF-D120/8-J

    Order number: 492271

  • IAS hose IAS 3 light 7000 AS

    for LEX 3, LEX 2, LRS

    Order number: 497479

Additional versions

  • Sanding and brushing
    Compressed air eccentric sander LEX 3 125/3
    LEX 3 125/3
  • Sanding and brushing
    Compressed air eccentric sander LEX 3 125/5
    LEX 3 125/5
  • Sanding and brushing
    Compressed air eccentric sander LEX 3 150/3
    LEX 3 150/3
  • Sanding and brushing
    Compressed air eccentric sander LEX 3 150/5
    LEX 3 150/5
  • Sanding and brushing
    Compressed air eccentric sander LEX 3 150/7
    LEX 3 150/7
  • Sanding and brushing
    Compressed air orbital sander LRS 93
    LRS 93M
  • Sanding and brushing
    Compressed orbital sander LRS 400
    LRS 400
  1. Recommended retail price of manufacturer. Prices of retailers may vary.