Bosch PWS Angle Grinders

Product Overview

This document provides operating instructions, safety warnings, and technical data for the Bosch PWS series of angle grinders. The tools are designed for cutting, roughing, and brushing metal and stone materials without water. Various models are available, indicated by numerical designations (e.g., PWS 680-115, PWS 700, PWS 750-115).

This manual is available in multiple languages, including German (Originalbetriebsanleitung), English (Original instructions), French (Notice originale), Spanish (Manual original), Portuguese (Manual original), Italian (Istruzioni originali), Dutch (Oorspronkelijke gebruiks-aanwijzing), Danish (Original brugsanvisning), Swedish (Bruksanvisning i original), Norwegian (Original driftsinstruks), Finnish (Alkuperäiset ohjeet), Greek (Πρωτότυπο οδηγιών χρήσης), and Turkish (Orijinal işletme talimatı).

General Safety Warnings

⚠️ WARNING: Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

The term "power tool" refers to mains-operated (corded) or battery-operated (cordless) power tools.

Work Area Safety

• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmospheres (e.g., near flammable liquids, gases, or dust). Power tools create sparks that may ignite dust or fumes.
• Keep children and bystanders away. Distractions can lead to loss of control.

Electrical Safety

• Ensure power tool plugs match the outlet. Never modify the plug. Do not use adapter plugs with earthed (grounded) power tools.
• Avoid body contact with earthed or grounded surfaces (pipes, radiators, etc.).
• Do not expose power tools to rain or wet conditions.
• Do not abuse the cord. Keep it away from heat, oil, sharp edges, and moving parts.

Personal Safety

• Stay alert, use common sense, and do not operate when tired or under the influence of drugs, alcohol, or medication.
• Use personal protective equipment: always wear eye protection. Use dust masks, safety shoes, hard hats, or hearing protection as appropriate.
• Prevent unintentional starting: ensure the switch is OFF before connecting to power or battery.
• Remove any adjusting key or wrench before turning the tool on.
• Maintain proper footing and balance; do not overreach.
• Dress properly: avoid loose clothing, jewelry, or long hair that can get caught in moving parts.
• Ensure dust extraction and collection facilities are connected and used properly.

Power Tool Use and Care

• Do not force the tool; use the correct tool for the application.
• Do not use the tool if the switch does not operate correctly.
• Disconnect power/battery before making adjustments, changing accessories, or storing the tool.
• Store idle tools out of reach of children and untrained users.
• Maintain tools: check for misalignment, binding, or broken parts. Have damaged tools repaired before use.

Safety Warnings for Angle Grinder

Common Warnings for Grinding, Sanding, Wire Brushing, or Abrasive Cutting Off Operations

• This tool is intended for grinding, sanding, wire brushing, or cut-off operations. Read all provided safety warnings and instructions.
• Polishing operations are not recommended.
• Use only accessories specifically designed and recommended by the manufacturer.
• Accessory rated speed must be at least equal to the tool's maximum speed.
• Accessory diameter and thickness must be within the tool's capacity rating.
• Threaded mounting of accessories must match the grinder spindle thread.
• Do not use damaged accessories. Inspect wheels for chips/cracks, backing pads for cracks/wear, wire brushes for loose wires. Perform a one-minute no-load test run after installing an accessory.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged rotating accessory. It can cause the tool to be forced in the direction opposite to the accessory's rotation.

• Maintain a firm grip and position your body to resist kickback forces. Use auxiliary handles.
• Never place your hand near the rotating accessory.
• Do not position your body in the path of the tool's potential movement during kickback.
• Use special care on corners, sharp edges, and avoid bouncing or snagging the accessory.
• Do not attach saw chain woodcarving blades or toothed saw blades.

Safety Warnings specific for Grinding and Abrasive Cutting-Off operations

• Use only recommended wheel types and guards.
• Ensure center-depressed wheels are mounted below the guard lip.
• Attach guards securely for maximum safety.
• Use wheels only for recommended applications (e.g., do not grind with the side of a cut-off wheel).
• Use undamaged wheel flanges of the correct size and shape.
• Do not use worn-down wheels from larger power tools.

Additional safety warnings specific for abrasive cutting off operations

• Do not "jam" the cut-off wheel or apply excessive pressure. Avoid excessive depth of cut.

Safety warnings specific for sanding operations

• Do not use excessively oversized sanding disc paper.

Safety warnings specific for wire brushing operations

• Be aware that wire bristles can be thrown. Do not overstress the brush.
• Ensure guards do not interfere with wire wheels or brushes.

Additional Safety Warnings

• Wear safety goggles.
• Use detectors to locate utility lines before working.
• Release the On/Off switch and set it to OFF when power is interrupted to prevent uncontrolled restarting.
• Do not touch grinding and cutting discs before they have cooled down.
• Secure the workpiece.

Product Description and Specifications

Intended Use

The machine is intended for cutting, roughing, and brushing of metal and stone materials without the use of water. For cutting with bonded abrasives, a special cutting guide (accessory) must be used. When cutting stone, provide for sufficient dust extraction. With approved sanding tools, the machine can be used for sanding with sanding discs.

Product Features

The numbering of the product features refers to the illustration of the machine on the graphics page.

• 1 Release lever for protection guard
• 2 Spindle lock button
• 3 On/Off switch
• 4 Auxiliary handle (insulated gripping surface)
• 5 Grinder spindle
• 6 Protection guard for grinding
• 7 Mounting flange
• 8 Grinding wheel*
• 9 Clamping nut
• 10 Protection guard for cutting*
• 11 Cutting disc*
• 12 Hand guard*
• 13 Rubber sanding plate*
• 14 Sanding sheet*
• 15 Round nut*
• 16 Cup brush*
• 17 Cutting guide with dust extraction protection guard*
• 18 Diamond cutting disc*
• 19 Handle (insulated gripping surface)
• 20 Securing device (only 3 603 CA2 0..)

*Accessories shown or described are not part of the standard delivery scope of the product. A complete overview of accessories can be found in our accessories program.

Diagram Descriptions

Noise/Vibration Information

Wear hearing protection! The vibration emission level has been measured according to EN 60745 and may be used for preliminary assessment. The declared level represents main applications, but may differ with varied use, accessories, or maintenance. Consider times when the tool is off or running without load to estimate actual exposure.

Technical Data

The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary.

The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary.

The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary.

Assembly

Mounting the Protective Devices

Before any work on the machine, pull the mains plug.

Note: If the grinding disc breaks or fixtures are damaged, send the machine for service.

Protection Guard for Grinding

Place protection guard (6) onto the spindle collar. Press and hold release lever (1) while doing this. Seat the guard until it engages audibly. Adjust guard position for optimal work process, ensuring all 3 red cams of the release lever (1) engage. Adjust guard to prevent sparking towards the operator. The guard can only be turned when the release lever (1) is actuated.

Protection Guard for Cutting

For cutting with bonded abrasives, always use protection guard for cutting (10). Provide sufficient dust extraction when cutting stone. Mounting is the same as for the grinding guard.

Cutting Guide with Dust Extraction Protection Guard

This guard (17) is mounted like the protection guard for grinding (6).

Auxiliary Handle

Always operate the machine with the auxiliary handle (4). Screw it onto the right or left of the machine head depending on the working method.

Hand Guard

For operations with rubber sanding plate (13), cup brush/wheel brush/flap disc, always mount the hand guard (12). The hand guard is fastened with the auxiliary handle (4).

Mounting the Grinding Tools

Before any work, pull the mains plug.

Do not touch discs before they have cooled down.

Clean the grinder spindle (5) and parts. Use the spindle lock button (2) to clamp/loosen tools. Actuate spindle lock only when the spindle is stationary.

Grinding/Cutting Disc

Ensure mounting hole diameter fits the flange without play. Do not use reducers or adapters.

For diamond cutting discs, ensure the direction-of-rotation arrow on the disc matches the machine's rotation direction.

Fasten the disc with clamping nut (9) using a two-hole spanner. After mounting, check that the tool is correctly mounted and turns freely without grazing the guard.

Flap Disc

Always mount the hand guard (12) for flap disc operations.

Rubber Sanding Plate

Always mount the hand guard (12) for rubber sanding plate (13) operations. Screw on round nut (15) and tighten.

Cup Brush/Disc Brush

Always mount the hand guard (12). Screw the brush onto the spindle until it rests firmly against the flange. Tighten with an open-end spanner.

Approved Grinding Tools

Use only tools with permissible speed [min⁻¹] or circumferential speed [m/s] matching or exceeding the values in the table. Observe the speed on the tool's label.

Rotating the Machine Head

Only for power tools with article number 3 603 CA2 0..

Before any work, pull the mains plug.

The machine head can be turned 180° for better handling (e.g., for left-handers). Remove screw (20) from release lever (1). Unscrew the 4 screws holding the head. Turn the head carefully. Re-mount and tighten the 4 screws. Re-attach screw (20). Observe protective device mounting instructions.

Operation

Starting Operation

Observe correct mains voltage. Tools marked 230 V can operate on 220 V. Be aware of potential performance issues with mobile generators.

Switching On and Off

To start: push On/Off switch (3) forwards. To lock ON: push switch (3) down at the front until latched. To switch OFF: release switch (3) or, if locked, briefly push down the back of switch (3) and release.

Only switch the tool on when using it to save energy.

Check grinding tools before use. Ensure proper mounting and free rotation. Perform a one-minute no-load test run. Do not use damaged, out-of-centre, or vibrating tools.

Working Advice

• Use caution when cutting slots in structural walls.
• Clamp workpieces that may not remain stationary.
• Do not strain the machine to the point of standstill.
• After heavy strain, run the tool at no-load for several minutes to cool the accessory.
• Do not touch discs before they have cooled down.
• Do not use the power tool with a cut-off stand.

Rough Grinding

Never use a cutting disc for roughing. Set the machine at a 30°-40° angle. Move back and forth with moderate pressure to avoid overheating, discoloration, or grooves.

Flap Disc

Use flap discs for curved surfaces and profiles. They offer longer service life and lower noise/temperature than conventional sanding sheets.

Cutting Metal

Always use the protection guard for cutting (10). Work with moderate feed, adapted to the material. Do not exert excessive pressure, tilt, or oscillate the machine. Do not reduce disc speed by applying sideward pressure.

The machine must always work in an up-grinding motion to avoid being pushed out of the cut. For profiles and square bar, start at the smallest cross-section.

Cutting Stone

Provide sufficient dust extraction. Wear a dust respirator. Use only for dry cutting/grinding. A diamond cutting disc is recommended. If using cutting guide (17), ensure vacuum cleaner is approved for masonry dust.

For cutting especially hard material (e.g., concrete): Diamond discs can overheat. Interrupt cutting and cool the disc by running the tool at maximum speed with no load. Dull discs may be resharpened by briefly cutting into abrasive material (e.g., lime-sand brick).

Information on Structures

Slots in structural walls must comply with DIN 1053 Part 1 and country-specific regulations. Consult a structural engineer, architect, or supervisor before work.

Maintenance and Service

Maintenance and Cleaning

Before any work, pull the mains plug.

Keep the machine and ventilation slots clean for safe working.

In extreme conditions, use dust extraction. Blow out ventilation slots frequently. Install a residual current device (RCD). Conductive dust in metalworking can impair total insulation.

Store and handle accessories carefully. If the supply cord needs replacement, it must be done by Bosch or an authorized agent.

For repairs, contact an after-sales service centre for Bosch power tools. Always include the 10-digit article number from the type plate in correspondence and spare parts orders.

After-sales Service and Application Service

Bosch after-sales service provides support for maintenance, repair, and spare parts. Exploded views and spare part information are available at www.bosch-pt.com. The application service team can answer questions about products and accessories.

Great Britain

Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
Tel. Service: (0844) 7360109
Fax: (0844) 7360146
E-Mail: boschservicecentre@bosch.com

Ireland

Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888

Australia, New Zealand and Pacific Islands

Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia: Phone: (01300) 307044, Fax: (01300) 307045
Inside New Zealand: Phone: (0800) 543353, Fax: (0800) 428570
Outside AU and NZ: Phone: +61 3 95415555
www.bosch.com.au

Republic of South Africa

Customer service Hotline: (011) 6519600
Gauteng BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-Mail: bsctools@icon.co.za

Declaration of Conformity

Robert Bosch GmbH declares under its sole responsibility that the product described under Technical Data conforms to EN 60745 and directives 2011/65/EU, 2004/108/EC, 2006/42/EC.

Technical file (2006/42/EC) at: Robert Bosch GmbH, PT/ETM9, D-70745 Leinfelden-Echterdingen

Signed by Dr. Egbert Schneider (Senior Vice President Engineering) and Helmut Heinzelmann (Head of Product Certification PT/ETM9).

Date: 04.12.2012