DCK 20V MAX Cordless Angle Grinders

DCK 20V MAX Cordless Angle Grinders are battery-powered professional grinding and cutting tools within the DCK 20V MAX cordless platform. They are designed for users who need the mobility of an angle grinder without a mains cable for suitable metalworking, construction, installation, maintenance and repair tasks. DCK positions its 20V MAX Grinding, Sanding & Polishing range for trade use and currently lists eight cordless brushless angle grinder models in the European category.

The current range includes both 115 mm (4-1/2") and 125 mm (5") cordless angle grinders:

• KAG20V-115
• KAG20V-125
• KDSM04-115
• KDSM04-115P
• KDSM04-125
• KDSM04-125P
• KDSM08-115
• KDSM08-125.

All eight products currently shown in the official DCK European category are identified as Cordless Brushless Angle Grinders. The range contains models with different body designs, wheel sizes, speeds, safety functions, battery packages and handling characteristics, so the DCK 20V MAX designation should be understood as the shared cordless platform rather than as one common performance specification.

DCK states that its broader 20V MAX platform supports battery capacities from 2.0Ah to 12.0Ah for different working conditions. The batteries supplied with individual angle-grinder kits, however, vary by model and package, and several machines are also available as Type Z solo tools without batteries or charger.

115 mm and 125 mm DCK cordless angle grinders

The first major choice is wheel diameter.

DCK’s current 20V MAX angle-grinder range is divided between 115 mm and 125 mm machines.

A 115 mm grinder uses a smaller wheel and can be relevant where compact dimensions and manoeuvrability are important. A 125 mm grinder accepts a larger wheel and belongs to a slightly larger working-diameter class.

Wheel size alone does not determine which model is best. Two grinders using the same 125 mm wheel can still differ in motor output, no-load speed, body weight, switch design and electronic protection systems.

The wheel, bore diameter, maximum permitted rotational speed and intended use must all correspond to the selected grinder.

Brushless motor technology

Every model currently listed in DCK’s European 20V MAX Angle Grinder category is identified as brushless.

For example, the KDSM04-115, KDSM04-125 and KDSM04-125P are described by DCK with a brushless motor delivering up to 1000 W equivalent maximum power. These are manufacturer specifications for those particular models and should not automatically be generalized to every DCK 20V MAX grinder.

DCK also positions brushless motor technology as contributing to efficiency, strong output and durability. In practical product selection, however, motor type should be compared together with wheel size, speed, weight, safety functions and battery requirements.

Three-speed DCK angle grinders

Several DCK KDSM04 models use a three-speed electronic gear system.

For example, the KDSM04-115 and KDSM04-125 are specified with three operating speeds:

• 4000/min
• 6500/min
• 9000/min.

The KDSM04-125P uses the same 4000 / 6500 / 9000 per minute three-speed arrangement.

Selectable speed can help adapt the grinder to different approved accessories and working conditions. The appropriate speed must always remain within the limits specified for the accessory being used.

Not every DCK 20V MAX grinder uses this exact three-speed system. For example, the KDSM08-115 is specified with a single 8500/min no-load speed.

Compact KDSM08 models

The KDSM08 series represents a more compact configuration within the current range.

For the KDSM08-115, DCK specifies:

• 20V MAX battery system;
• 115 mm maximum wheel diameter;
• 22.2 mm wheel bore;
• M14 spindle thread;
• 8500/min no-load speed;
• 1.3 kg solo-tool weight;
• 132 mm ultra-slim body;
• brushless motor;
• soft start;
• over-temperature protection;
• over-current protection;
• power-off protection;
• detachable metal dustproof filter.

DCK also publishes a manufacturer test result of up to 63 cuts through 12 mm rebar with a 4.0Ah battery for this model. This is a model-specific test result under DCK’s test conditions and should not be treated as a universal runtime or cutting-performance figure.

The compact body and low solo weight can be relevant for repetitive handheld work, but the correct grinder should still be selected according to the required wheel size, workload and safety features.

KDSM04 models and multiple safety systems

The KDSM04 range adds several electronic and mechanical features depending on the exact version.

The KDSM04-115 is specified with:

• brushless motor;
• 1000 W equivalent maximum power;
• 4000 / 6500 / 9000 per minute speed settings;
• 115 mm wheel;
• 22.2 mm bore;
• M14 spindle;
• tool-free guard adjustment;
• detachable metal dustproof filter;
• Kickback Control;
• Drop Control;
• Overload Restart.

The KDSM04-125 uses a 125 mm wheel and is likewise listed with three-speed control, Kickback Control, Drop Control and Overload Restart.

The KDSM04-115P and KDSM04-125P use a different protection combination. DCK lists Kickback Control, an electronic disc brake and Overload Restart on these P versions. The KDSM04-115P also uses a paddle switch.

These safety systems are model-specific and should not be assumed to exist on every DCK cordless grinder.

Kickback Control, Drop Control and electronic braking

Some DCK 20V MAX angle grinders include electronic functions intended to respond to abnormal operating conditions.

Kickback Control is listed on KDSM04 models as a protection function associated with sudden reaction events such as wheel binding.

Drop Control is specified on models including KDSM04-115 and KDSM04-125.

The P versions replace the listed Drop Control feature with an electronic disc brake in their current specifications.

Because the exact protection package varies, customers should compare the full model number rather than assuming that all KDSM04 grinders have identical electronics.

Tool-free guards and accessories

DCK includes tool-free guard systems on several current grinders.

The KDSM04-115, KDSM04-125 and P variants include a tool-free grinding guard and tool-free cutting guard in their listed package contents. Depending on the model, a tool-free flange may also be included.

These details matter because grinding and cutting are different operations. The correct manufacturer-approved guard and wheel configuration must be used for the task.

A physical ability to mount a wheel does not by itself confirm that the wheel is suitable for that grinder or operation.

Who are these products for?

DCK positions the wider 20V MAX system and its Grinding, Sanding & Polishing products for trade usage.

Depending on the model and application, DCK cordless angle grinders can be relevant for:

• metal fabricators;
• welders;
• construction professionals;
• installers;
• maintenance technicians;
• workshop users;
• renovation and repair teams;
• mobile service professionals;
• users already working with DCK 20V MAX batteries.

Their main advantage over corded grinders is mobility: the grinder can be used without a mains cable running through the work area.

Main applications

With a suitable manufacturer-approved accessory, cordless angle grinders can be used for tasks such as:

• metal grinding;
• weld preparation and finishing;
• deburring;
• surface preparation;
• cutting suitable metal components;
• trimming and repair work;
• suitable construction-material applications where the grinder, accessory and guard are approved for the task.

Not every wheel is suitable for cutting, and a grinding wheel should not automatically be used as a cutting wheel.

Accessory compatibility and the manufacturer’s operating instructions should always take priority over generic angle-grinder terminology.

How to choose the right DCK 20V MAX angle grinder

1. Choose between 115 mm and 125 mm

This is the most basic product distinction in the current collection. Both sizes are available across several model families.

If you already standardise your consumables around one wheel size, maintaining that size may simplify stock management. Otherwise, choose according to the required working diameter and manufacturer-approved accessories.

2. Compare body size and weight

For repeated handheld work, tool weight can be important.

The KDSM08-115 weighs approximately 1.3 kg as a solo tool, while KDSM04-115 and KDSM04-125 variants are listed around 1.9 kg as solo tools.

Battery weight must then be added to determine the complete working weight.

3. Compare speed control

If adjustable speed is useful for your work, compare the KDSM04 models with their 4000 / 6500 / 9000 per minute electronic speed settings.

If a fixed-speed compact tool is sufficient, a KDSM08 model may be more relevant.

4. Compare protection functions

Depending on the model, DCK lists:

• Kickback Control;
• Drop Control;
• electronic brake;
• Overload Restart;
• soft start;
• over-temperature protection;
• over-current protection;
• power-off protection.

The functions differ by model.

5. Check switch type

The P variants such as KDSM04-115P are equipped with a paddle switch.

Switch design can influence how the tool is controlled during repeated work, so this is worth comparing if users have a strong preference.

6. Check spindle and wheel bore

Verified KDSM04 and KDSM08 models use an M14 spindle thread and a 22.2 mm wheel bore.

Always verify these dimensions on the exact model before selecting accessories.

7. Check battery package

DCK commonly offers several configurations.

For example, KDSM04-125P is listed as:

• Type FK – two 5.0Ah batteries and 4A charger;
• Type EK – two 4.0Ah batteries and 4A charger;
• Type Z – solo tool without those batteries or charger.

KDSM08-115 uses the same 5.0Ah, 4.0Ah and solo package structure.

DCK 20V MAX battery platform

The wider DCK 20V MAX system is specified with battery capacities from 2.0Ah to 12.0Ah.

For angle grinders, battery choice matters because grinding and cutting can place sustained load on the cordless system. Higher-capacity batteries may provide more available energy, while smaller packs reduce complete tool weight.

The correct battery should be selected according to the specific grinder and manufacturer recommendations rather than simply choosing the highest Ah figure.

Verified product examples

DCK KDSM04-125P

The KDSM04-125P is a 125 mm cordless brushless angle grinder with 1000 W equivalent maximum power and three no-load speeds of 4000, 6500 and 9000/min. It uses a 22.2 mm wheel bore and M14 spindle. DCK specifies Kickback Control, Disc Brake, Overload Restart, a detachable metal dustproof filter and tool-free guard adjustment. The solo-tool weight is listed at approximately 1.9 kg.

DCK KDSM08-115

The KDSM08-115 is a compact 115 mm brushless grinder with an 8500/min no-load speed, 132 mm slim body and approximately 1.3 kg solo weight. DCK lists soft start, over-temperature protection, over-current protection, power-off protection and a detachable metal dustproof filter.

DCK KDSM04-125

The KDSM04-125 uses a 125 mm wheel with 4000 / 6500 / 9000 per minute electronic speed selection, M14 spindle and 22.2 mm wheel bore. DCK lists 1000 W equivalent maximum power together with Kickback Control, Drop Control and Overload Restart.

Frequently Asked Questions (FAQ)

How many DCK 20V MAX cordless angle grinders are currently listed?

The official European category currently lists eight models.

What wheel sizes are available?

The current DCK 20V MAX range contains 115 mm and 125 mm cordless angle grinders.

Are DCK 20V MAX angle grinders brushless?

All eight models currently listed in the official European category are identified as cordless brushless angle grinders.

Do DCK cordless grinders have adjustable speed?

Some do. KDSM04 models use three electronic speeds of 4000, 6500 and 9000/min, while the KDSM08-115 is specified at 8500/min.

What is the difference between KDSM04 and KDSM08?

They represent different model families. Verified KDSM04 models offer three-speed control and selected electronic protection functions, while the KDSM08-115 is built around a lighter 1.3 kg solo body, 8500/min speed and a different protection package.

What is the difference between KDSM04 and KDSM04P?

The P versions include a paddle switch and DCK lists an electronic disc brake as part of their safety system. Non-P KDSM04 specifications instead list Drop Control alongside Kickback Control and Overload Restart.

Do the grinders include a battery and charger?

It depends on the package. Type FK and EK versions of verified models include batteries and a 4A charger, while Type Z is the solo configuration.

Can I use the same DCK 20V MAX battery with other DCK tools?

The angle grinders are part of DCK’s wider 20V MAX platform, which covers many cordless tool categories. Compatibility should still be confirmed for the exact battery and tool model.

What spindle size do DCK cordless angle grinders use?

Verified KDSM04 and KDSM08 European models use an M14 spindle thread with a 22.2 mm wheel bore.

Cordless or corded angle grinder?

A cordless grinder offers greater mobility and eliminates the mains cable from the immediate work area. A corded grinder can be preferable where uninterrupted mains-powered operation is more important. The correct choice depends on the work environment and workload.

Tricks & Tips

• Choose wheel diameter first. Decide whether your work and consumables are better suited to 115 or 125 mm.
• Do not compare models by speed alone. Weight, protection systems, switch type and battery configuration can be just as important.
• Check the full model code. KDSM04, KDSM04P and KDSM08 variants have different feature sets.
• Match the battery to the work. Larger batteries can provide more available energy but also increase complete tool weight.
• Check whether you are ordering FK, EK or Z. Z versions are solo tools on the verified models.
• Use the correct guard for grinding or cutting. Follow DCK’s instructions for the exact operation.
• Check the wheel speed rating. The accessory must be approved for the grinder’s rotational speed.
• Inspect consumables before use. Never operate a damaged grinding or cutting wheel.

Safety

Cordless angle grinders operate cutting and abrasive wheels at high rotational speeds. Always use the grinder according to the exact DCK model manual and only with accessories specified for the correct diameter, bore, speed rating and application.

Use the required guard and auxiliary handle and wear appropriate eye, hearing and other task-specific personal protective equipment. Inspect the wheel and grinder before operation. Remove the battery before changing wheels, adjusting guards or carrying out maintenance when required by the manufacturer.