- Item No: FES691139
- Weight: 1.49kg
- Dimensions: 27.00mm x 19.50mm x 17.00mm
- SKU: FES691139
- UPC: 4014549140123
Available Options
Festool LEX 3 77/2,5 Compressed Air Eccentric Sander
At a Glance: Compact 77 mm pneumatic eccentric sander with 2.5 mm sanding stroke, 700 g body weight and low compressed air consumption
The Festool LEX 3 77/2,5 is a compact compressed air eccentric sander designed for fine finishing, spot repair, blending and sanding smaller or difficult-to-reach areas. With its 77 mm sanding pad, 2.5 mm sanding stroke and extremely low tool weight, this pneumatic sander gives the user excellent control when working on transitions, edges, seams, beading and small surfaces. Built for professional paint, automotive, furniture and finishing work, the LEX 3 77/2,5 combines low vibration, pleasant operating noise and efficient compressed air use to support smoother work and a healthier working environment.
The LEX 3 77/2,5 is made for surface finishing where a full-size sander is simply too large. It is ideal for spot repairs, small panels, furniture edges, blending work and polishing preparation. When used with the correct IAS 2 or IAS 3 connection system and suitable dust extraction, it becomes a clean, efficient and comfortable finishing solution for professional users.
Product highlights
- Compact 77 mm sanding pad: Ideal for small areas, transitions, seams, edges and difficult-to-access surfaces.
- Fine 2.5 mm sanding stroke: Designed for finishing, blending and controlled surface preparation.
- Very lightweight: The 700 g body weight helps reduce fatigue during detailed sanding work.
- Low vibration: High balancing quality supports smoother operation and healthier working.
- Low operating noise: More pleasant to use during longer finishing and paint-preparation tasks.
- Sanding pad brake: Helps reduce sanding marks when setting the machine onto the surface.
- Low air consumption: Efficient compressed air use helps reduce operating costs.
- IAS system operation: Requires an IAS 2 or IAS 3 connecting system for proper operation.
Extra Information
- The LEX 3 77/2,5 is a compressed air sander and requires a suitable compressed air supply.
- An IAS 2 or IAS 3 connecting system is required for operation.
- The small 77 mm pad makes this sander especially useful for spot repair and blending work.
- Use with suitable Festool StickFix abrasives for best sanding performance.
- For dust-controlled work, use the correct Festool IAS hose and compatible dust extraction setup.
- The machine is designed for professional finishing applications where low vibration, low noise and precise handling matter.
Pro Tips
- Use the LEX 3 77/2,5 for small surface correction and blending where a larger 125 mm or 150 mm sander would be too aggressive or awkward.
- Keep air pressure consistent at the recommended operating pressure for best sanding performance.
- Use the correct IAS hose setup. This tool is happiest when the air supply, exhaust air and dust extraction are all working properly.
- Let the abrasive do the work. Pressing too hard can reduce finish quality and shorten abrasive life.
- Use progressively finer grits before polishing preparation to avoid leaving visible sanding marks.
- Add the supplied cleaning and lubricating oil as required by the maintenance instructions to support long service life.
How to Use
- Check that the compressed air supply is clean, suitable and set to the required operating pressure.
- Connect the sander using the correct IAS 2 or IAS 3 connecting system.
- Fit the required 77 mm StickFix abrasive disc to the sanding pad.
- Connect suitable dust extraction if the sanding setup requires extraction.
- Place the sanding pad flat on the workpiece before starting the machine.
- Guide the sander evenly over the surface with light pressure and controlled movement.
- Work through the required abrasive grits until the desired finish is achieved.
- Stop the machine and allow the sanding pad to come to rest before lifting it away from the workpiece.
- Disconnect the air supply before changing accessories, inspecting the pad or cleaning the tool.
- Clean and lubricate the machine according to the Festool maintenance instructions.
Features
- Compressed air drive: Designed for professional pneumatic sanding applications.
- 77 mm sanding pad: Small pad size improves access and control on compact surfaces.
- 2.5 mm sanding stroke: Supports fine sanding and high-quality finishing results.
- 10 500 min⁻¹ eccentric motion speed: Provides fast, smooth sanding action.
- 21 000 min⁻¹ stroke rate: Supports efficient finishing on suitable materials.
- 270 l/min air consumption: Low compressed air requirement helps keep running costs under control.
- Antistatic function: Helps reduce static charge when used with compatible extraction and hose systems.
- StickFix STF system: Allows quick abrasive changes without adhesive or clamping.
- Safe exhaust air dispersion: Exhaust air is guided through the compressed air hose to help protect the user.
Benefits
- Excellent detail control: The small sanding pad is perfect for spot repair, blending and working close to edges.
- Cleaner finishing: The fine 2.5 mm stroke helps achieve smooth surface results before polishing or coating.
- Reduced user fatigue: The lightweight body and low vibration make the tool easier to guide for longer periods.
- Lower operating costs: Low compressed air consumption helps save energy in professional pneumatic sanding setups.
- Less rework: The sanding pad brake helps reduce accidental sanding marks when placing the sander on the workpiece.
- Better system workflow: Works as part of the Festool pneumatic sanding and IAS extraction system.
Application
- Fine finishing work
- Sanding transitions during spot repair and blending
- Sanding small surfaces and detail areas
- Removing paintwork blemishes and paint drips before polishing
- Sanding inaccessible areas, seams, beading and edges
- Trimming and sanding edges in furniture manufacture
- Automotive refinishing, paint preparation and surface correction
- Furniture finishing, cabinetmaking and detailed workshop sanding
Safety
- Wear eye, ear and dust protection when sanding paint, filler, timber, coatings or bodywork materials.
- Use the sander only with a suitable compressed air supply and the required IAS 2 or IAS 3 connection system.
- Check the sanding pad, abrasive and air connection before starting work.
- Do not exceed the recommended operating pressure.
- Use dust extraction and suitable respiratory protection when sanding materials that may create harmful dust.
- Keep hands clear of the sanding pad while the machine is running.
- Do not use damaged hoses, damaged connectors or worn sanding pads.
- Disconnect the compressed air supply before changing abrasives, inspecting the pad, cleaning or lubricating the machine.
- Allow the sanding pad to stop completely before placing the tool down.
- Follow the maintenance instructions for lubrication and cleaning to keep the pneumatic motor working properly.
Specifications
| Description | Spec |
|---|---|
| Brand | Festool |
| Cat No. | 691131 |
| Product Type | Compressed Air Eccentric Sander |
| Model | LEX 3 77/2,5 |
| Drive Type | Compressed Air |
| Operating Pressure | 6.00 bar |
| No. Of Strokes | 21 000 min⁻¹ |
| Eccentric Motion Speed | 10 500 min⁻¹ |
| Sanding Stroke | 2.50 mm |
| Sanding Pad Diameter | 77.00 mm |
| Air Consumption At Rated Load | 270.00 l/min |
| Product Weight Without Accessories | 0.70 kg |
| Connection System Required | IAS 2 / IAS 3 |
| Abrasive Fastening | StickFix STF |
| Antistatic Function | Yes |
| Vibration Protection | Yes |
| Sanding Pad Brake | Yes |
| Vibration Emission Value Ah, Single-Axle | 0.80 m/s² |
| Vibration Emission Value Ah, Three-Axle | 1.90 m/s² |
| Sanding Total Vibration Average Ah | 2.50 m/s² |
| Sanding Vibration Uncertainty K | 1.50 m/s² |
| Sound Pressure Level | 72.00 dB(A) |
| Sanding Sound Pressure Level LpA | 72.00 dB(A) |
| Sanding Sound Power Level LWA | 83.00 dB(A) |
| Noise Uncertainty K | 3.00 dB |
| Main Use | Fine Finishing, Spot Repair, Blending And Small Surface Sanding |
In the box:
- Festool LEX 3 77/2,5 compressed air eccentric sander
- ST D77-M5-W sanding pad
- LFC 9022/50 cleaning and lubricating oil
- Screwdriver, WAF 4