Bosch GEX Professional Random Orbit Sanders

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The Bosch GEX Professional Random Orbit Sanders are available in multiple models: GEX 125 (280W, 125mm, 1.4kg) ; GEX 125-1 AE (250W, 125mm, 1.3kg) ; GEX 34-150 (340W, 150mm, 2.1kg) ; PRO GEX 40-150 (400W, 150mm, 2.4kg, multi-hole sanding pad) ; GEX 125 AC (340W, 125mm, 2.0kg, 5.0mm orbit) ; GEX 150 AC (340W, 150mm, 2.1kg, 4.0mm orbit) ; and GEX 185-LI (18V cordless, 125mm, 0.93kg, brushless motor) . Features may include variable speed selection, Bosch Microfilter dust boxes, Click & Clean dust extraction compatibility, vibration control, and multi-hole sanding pads. Suitable for carpenters, painters, cabinet makers, drywallers, and woodworkers.
Description

Table of Contents

Bosch GEX Professional Random Orbit Sanders

PRIMARY USES

1. Professional Sanding and Surface Finishing for Woodworking and Construction
Primary Use: A range of professional random orbit sanders (available in corded and cordless 18V models, 125mm and 150mm sanding pad diameters) used for sanding, in-between sanding, lacquer removal, finishing surfaces, and polishing . Essential for carpenters, cabinet makers, painters, drywallers, and woodworkers requiring a high-quality, swirl-free finish on various materials.
How it helps: For professionals, the GEX series delivers high-performance sanding with a swirl-free finish. The random orbital action combined with powerful motors up to 400W ensures efficient material removal and a smooth finish . The multi-hole sanding pads enable significantly increased dust extraction and are compatible with sanding sheets with different hole patterns . Low vibration designs allow for extended, fatigue-free working, making these sanders ideal for time-intensive applications . The cordless GEX 185-LI features a brushless motor for consistent removal rate almost equivalent to a corded sander, with up to 40 minutes runtime with a GBA 4Ah battery .

SECONDARY USES

1. Paint and Varnish Removal: Removes old paint, varnish, and lacquer from wood and metal surfaces .
2. Surface Preparation: Prepares surfaces for painting, staining, or sealing.
3. Polishing: With appropriate accessories, polishes surfaces to a high-gloss finish .
4. In-Between Sanding: Smooths intermediate coats of paint, varnish, and filler for a flawless final finish .
5. Multi-Material Sanding: Suitable for wood, veneer, lacquer, filler, mineral surfaces, acrylic, metal, and plastic .
About brand
**Bosch** is a leading German brand founded in **1886**, renowned for its high-quality, innovative, and reliable engineering solutions. In the hardware industry, Bosch is best known for its durable power tools, measuring equipment, and accessories, trusted by professionals and DIY users worldwide. With a strong focus on performance, precision, and innovation, Bosch continues to set the standard for quality in construction, manufacturing, and home improvement.
KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

  • Device Type: Random orbit sander; not a medical device.
  • Designation: Bosch GEX Professional Series
  • Power Source: Corded electric or 18V cordless
  • Sanding Pad Attachment: Hook-and-loop fastening 
  • Country of Origin: Not specified
MODEL SPECIFICATIONS
Model
Order Number
Power
No-Load Speed
Orbital Stroke Rate
Pad Diameter
Orbit Diameter
Weight
GEX 125
0.601.3A8.0K0
280W
7,500-12,000 rpm
15,000-24,000 opm
125mm
2.6mm
1.4kg 
GEX 125-1 AE
0.601.387.540
250W
7,500-12,000 rpm
15,000-24,000 opm
125mm
2.5mm
1.3kg 
GEX 34-150
0.601.372.800
340W
4,500-12,000 rpm
9,000-24,000 opm
150mm
4.0mm
2.1kg 
PRO GEX 40-150
0.601.37B.270
400W
5,500-12,000 rpm
11,000-24,000 opm
150mm
4.0mm
2.4kg 
GEX 125 AC
3.601.C72.4..
340W
4,500-12,000 rpm
9,000-24,000 opm
125mm
5.0mm
2.0kg 
GEX 150 AC
3.601.C72.6..
340W
4,500-12,000 rpm
9,000-24,000 opm
150mm
4.0mm
2.1kg 
GEX 185-LI
0.601.3A5.020
18V
6,000-10,000 rpm
12,000-20,000 opm
125mm
2.5mm
0.93kg 

2. TECHNICAL & PERFORMANCE PROPERTIES

  • Primary Action: Random orbital sanding via eccentric mechanism
  • Motor Type: Brushed universal motor (corded models) ; brushless motor (GEX 185-LI) 
  • Speed Control: Variable speed preselection for multi-material applications 
  • Dust Extraction: Compatible with Bosch Click & Clean System ; Bosch Microfilter System dust box for practically dust-free work 
  • Vibration Control: Unique vibration damping for continuous work ; Vibration Control on select models
  • Sanding Pad: Multi-hole design for sanding sheets with different hole patterns and increased dust extraction 

3. PHYSICAL & OPERATIONAL PROPERTIES

  • Preparation: Attach the appropriate sanding sheet to the hook-and-loop sanding pad. Connect dust extraction if required.
  • Usage Instructions: Switch on using the On/Off switch. Select appropriate speed for the material. Guide the sander over the workpiece with even pressure.
  • Ergonomics: Compact, ergonomic design with soft grip surfaces for variable grip positions and outstanding comfort ; decoupled sanding unit for consistent contact pressure 
  • Included Accessories: Varies by model; may include sanding sheets, dust box, dust bag, L-BOXX or carrying case, hex key
  • Storage Conditions: Store in a dry, secure place.
  • Cleaning: Clean housing with soft, dry cloth. Empty dust box or bag regularly.

4. SAFETY & COMPLIANCE ATTRIBUTES

  • Safety Classification: Power tool; risk of injury from rotating parts and dust. Eye protection and dust mask recommended.
  • Dust Hazard: Some materials generate hazardous dust. Use appropriate respiratory protection (at least P2 or N95 mask) and dust extraction systems.
  • Electrical Safety: Check power cord for damage before use (corded models). Use with original Bosch Professional batteries and chargers only (cordless models). Do not operate in wet conditions.
  • Regulatory: Complies with applicable safety standards.
SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Personal Protective Equipment (PPE): Always wear safety goggles and appropriate respiratory protection when sanding. Dust from sanding materials can be hazardous—use local exhaust ventilation and dust extraction where possible.
Electrical Safety: Check power cord and extension cord for damage before use (corded models). Use with original Bosch Professional 18V batteries and chargers only (cordless models). Do not operate in wet conditions.
Dust Hazard: Some materials generate hazardous dust. Use appropriate respiratory protection (at least P2 or N95 mask) and dust extraction systems.
Operational Safety: Do not wear loose clothing or gloves that could become entangled in the tool. Secure the workpiece firmly before sanding.
Maintenance: Unplug tool or remove battery before changing sanding sheets or performing maintenance. Allow the tool to cool before storing.
Training requirement: Operators should be familiar with correct usage and safety procedures. Supervisors should ensure all safety protocols are followed.

2. FIRST AID MEASURES

Eye Injury (dust/debris): Do not rub. Rinse immediately with plenty of clean water for at least 15 minutes, holding eyelids open. Seek medical attention.
Skin Contact (dust): Wash skin with soap and water. If irritation develops, seek medical attention.
Inhalation of Dust: Move a person to fresh air. If symptoms persist (coughing, difficulty breathing), seek medical attention.

3. FIRE FIGHTING MEASURES

Flammability: The tool is not flammable, but plastic casing may burn if exposed to fire. Sparks from sanding can ignite flammable materials.
Extinguishing Media: Use water spray, foam, dry chemical powder, or carbon dioxide (CO₂) for fires involving tools.
Fire Response: In event of fire, evacuate the area and call emergency services. Use appropriate extinguishers; water may be used for general fires but not for electrical fires where live equipment is involved.