DCK 20V MAX Cordless Reciprocating Saws

DCK 20V MAX Cordless Reciprocating Saws are professional battery-powered cutting tools designed for fast cutting, demolition, installation and maintenance work where mobility and access are important. Unlike a circular saw, which uses a rotating blade for controlled straight cuts, a reciprocating saw uses a back-and-forth blade movement, making it particularly useful for cutting in confined spaces, existing structures and applications where the workpiece cannot easily be moved to a stationary saw.

The current DCK 20V MAX Reciprocating Saw range includes three cordless brushless models:

• KDJF32
• KRS20V-22S
• KDJF22

All three use brushless motors and belong to the DCK 20V MAX cordless platform. Their specifications differ substantially, however. The KDJF22 and KRS20V-22S use a compact 22 mm stroke system, while the larger KDJF32 increases stroke length to 32 mm and adds orbital cutting, six-speed adjustment and greater maximum cutting capacities.

This means that the correct DCK reciprocating saw should be selected according to the material, required cutting capacity, working position and expected workload rather than simply choosing the model with the largest specification.

What is a reciprocating saw?

A reciprocating saw uses a narrow removable blade that travels rapidly backwards and forwards.

This cutting principle is particularly useful when:

• working inside an existing structure;
• cutting close to walls or obstacles;
• removing old construction materials;
• cutting pipes or profiles;
• cutting timber during renovation;
• working where a circular saw would be difficult to position;
• changing between wood- and metal-cutting blades for different tasks.

The blade can be changed according to the material being cut. DCK supplies selected reciprocating saw packages with separate blades intended for wood and metal.

A reciprocating saw should therefore be understood as a versatile cutting and demolition tool rather than a direct replacement for a circular saw, jig saw or chain saw.

DCK 20V MAX reciprocating saw range

The current range contains two distinct size classes.

KDJF22 and KRS20V-22S

• 22 mm stroke length;
• up to 3000 strokes per minute;
• maximum cutting capacity of 180 mm in wood;
• maximum cutting capacity of 15 mm in metal;
• maximum pipe capacity of Ø100 mm;
• approximately 1.8 kg solo-tool weight.

KDJF32

• 32 mm stroke length;
• up to 2800 strokes per minute;
• maximum cutting capacity of 255 mm in wood;
• maximum cutting capacity of 20 mm in steel;
• maximum pipe capacity of Ø130 mm;
• approximately 3.3 kg solo-tool weight;
• orbital/straight cutting adjustment;
• six-speed adjustment.

The larger KDJF32 is therefore designed for a different level of cutting capacity, while the 22 mm models prioritise lower weight and compact handling.

Brushless motors

All three current DCK 20V MAX reciprocating saws use brushless motors.

DCK describes the brushless motor systems as providing high efficiency, strong output and durability. In a cordless saw, this motor works together with the battery, electronic control system, blade and reciprocating mechanism.

Brushless construction alone does not determine which saw is appropriate. Stroke length, cutting capacity, vibration control, tool weight and blade selection should also be considered.

Stroke length – 22 mm or 32 mm?

Stroke length describes how far the saw blade travels during each reciprocating movement.

The KDJF22 and KRS20V-22S use a 22 mm stroke, while the KDJF32 uses a 32 mm stroke.

A longer stroke allows more of the blade teeth to pass through the material during each cycle and is one of the specifications that distinguishes the larger KDJF32 from the compact models.

However, a longer stroke is not automatically better for every task. Compact dimensions and lower weight can be more important when cutting in confined areas, working overhead or carrying the saw throughout the day.

DCK KDJF22

The KDJF22 is a compact 20V MAX cordless brushless reciprocating saw.

Manufacturer specifications include:

• brushless motor;
• 22 mm stroke length;
• variable speed up to 3000/min;
• maximum cutting capacity of 180 mm in wood;
• maximum cutting capacity of 15 mm in metal;
• maximum pipe diameter of 100 mm;
• tool-free blade-changing system;
• vibration-reduction system;
• switch-lock mechanism;
• compact one-hand-oriented design;
• approximately 1.8 kg solo-tool weight.

DCK specifically highlights the low centre of gravity and compact body as features intended to improve manoeuvrability and handling.

The combination of 22 mm stroke, low weight and tool-free blade changing makes KDJF22 particularly relevant for maintenance, installation and renovation work where the saw needs to be moved frequently between cuts.

DCK KRS20V-22S

The KRS20V-22S shares many of the core cutting specifications of the KDJF22.

Its verified specifications include:

• brushless motor;
• 22 mm stroke;
• speed range of 0–3000/min;
• maximum cutting depth of 180 mm in wood;
• maximum cutting depth of 15 mm in metal;
• pipe cutting capacity up to Ø100 mm;
• tool-free blade change;
• vibration-absorbing system;
• compact one-hand design;
• approximately 1.8 kg solo weight.

The KRS20V-22S is offered with additional battery-package choices compared with the KDJF22, including both 5.0Ah and 4.0Ah kit versions as well as a solo configuration.

For customers already using DCK 20V MAX batteries, the solo version can avoid duplicating battery and charging equipment.

DCK KDJF32 – higher-capacity reciprocating saw

The KDJF32 is the larger and more extensively adjustable model in the current DCK range.

Manufacturer specifications include:

• brushless motor;
• 32 mm stroke length;
• maximum speed of 2800/min;
• maximum cutting capacity of 255 mm in wood;
• maximum cutting capacity of 20 mm in steel;
• maximum pipe capacity of Ø130 mm;
• four-position orbital/straight cutting system;
• six-speed adjustment;
• tool-free blade change;
• adjustable base plate with three positions;
• Super Vibration Control;
• maximum stated vibration value of 4.1 m/s²;
• approximately 3.3 kg solo-tool weight.

The KDJF32 therefore provides significantly greater maximum cutting capacities than the two 22 mm models.

It is also a substantially heavier machine, making it more relevant where cutting capability and adjustment options are more important than minimum tool weight.

Orbital and straight cutting

The KDJF32 includes a four-position orbital/straight cutting action.

In conventional straight reciprocating action, the blade primarily moves backwards and forwards.

Orbital action introduces additional blade movement intended to improve cutting efficiency in suitable materials.

The appropriate orbital setting depends on the material, blade and required cut quality. Not every material or blade is suitable for aggressive orbital cutting, so the operating mode should be selected according to the manufacturer instructions.

The KDJF22 and KRS20V-22S do not share this verified four-position orbital specification.

Six-speed adjustment on KDJF32

The KDJF32 also provides six-speed adjustment, allowing the cutting rate to be adapted to different materials and operating conditions.

This can be useful because wood, steel and other materials do not necessarily benefit from the same blade speed.

Speed selection should also be coordinated with the blade manufacturer’s requirements. A blade designed for wood cutting can differ substantially from one intended for steel or pipe.

Vibration control

Reciprocating saws inherently generate repeated back-and-forth movement, making vibration an important comparison criterion.

Both 22 mm models use a vibration-absorbing system intended to reduce operator fatigue.

The KDJF32 uses DCK's Super Vibration Control Technology, for which the manufacturer specifies a maximum vibration value of 4.1 m/s².

Vibration exposure still depends on the material, blade, operating speed, tool condition and length of use. Model-specific safety and exposure information should therefore be followed.

Tool-free blade changing

All three current DCK reciprocating saws use a tool-free blade-change system.

This allows the cutting blade to be installed or removed without using a separate blade-change tool.

This can be particularly useful when switching repeatedly between:

• wood blades;
• metal blades;
• different blade lengths;
• blades intended for demolition or installation work.

The blade itself must still be suitable for both the tool and the material.

Maximum cutting capacity

Cutting capacity is one of the clearest ways to distinguish the models.

KDJF22 / KRS20V-22S

• wood: 180 mm;
• metal: 15 mm;
• pipe: Ø100 mm.

KDJF32

• wood: 255 mm;
• steel: 20 mm;
• pipe: Ø130 mm.

The KDJF32 therefore adds:

• 75 mm more maximum wood cutting capacity;
• 5 mm more specified steel/metal capacity;
• 30 mm more maximum pipe diameter.

These are manufacturer maximum specifications. Actual cutting performance depends heavily on the blade and material.

Who are these products for?

DCK positions its 20V MAX Saws platform for trade use.

Cordless reciprocating saws can be relevant for:

• construction professionals;
• renovation contractors;
• plumbers;
• HVAC installers;
• electricians;
• carpenters;
• maintenance technicians;
• demolition and strip-out work;
• mechanical installers;
• property-maintenance teams;
• mobile repair professionals;
• users already operating DCK 20V MAX tools.

Their cordless design is especially useful where the cutting point changes frequently or where running a mains cable through the work area would be inconvenient.

Main applications

Depending on the blade and selected saw, typical applications can include:

• cutting timber;
• cutting wooden construction elements;
• cutting suitable metal sections;
• cutting pipes;
• renovation and strip-out work;
• cutting materials in confined locations;
• installation work;
• maintenance and repair;
• removal of old components;
• rough construction cutting.

A reciprocating saw is often used where versatility and access are more important than achieving the long, guided straight cut associated with a circular saw.

Choosing the correct blade

The saw is only one part of the cutting system. Blade selection is critical.

Check:

• blade material;
• tooth design;
• tooth pitch;
• blade length;
• intended workpiece material;
• maximum thickness;
• compatibility with reciprocating saws.

DCK supplies wood and metal blades with the verified models, but replacement blades should still be selected according to the exact material and application.

A blade that is too short for the workpiece can create unsafe operating conditions. The blade needs sufficient length throughout the full reciprocating stroke.

How to choose the right DCK 20V MAX reciprocating saw

1. Compare cutting capacity

For larger timber, pipe or steel cutting, KDJF32 provides the greatest verified capacity.

For more moderate cutting requirements, KDJF22 or KRS20V-22S may provide sufficient capacity with lower weight.

2. Compare weight

Solo-tool weights:

• KDJF22 – approximately 1.8 kg;
• KRS20V-22S – approximately 1.8 kg;
• KDJF32 – approximately 3.3 kg.

The difference is substantial.

If the saw is used frequently overhead or in confined areas, the lighter models may be easier to control.

3. Consider stroke length

• compact models: 22 mm;
• KDJF32: 32 mm.

Choose according to the workload rather than assuming that the longest stroke is always required.

4. Decide whether orbital cutting is needed

If you want adjustable orbital/straight cutting action, the KDJF32 is the verified model that provides it.

5. Consider speed adjustment

KDJF32 provides six-speed adjustment.

The compact 22 mm models use variable speed up to 3000/min.

6. Compare pipe capacity

If pipe cutting is a common task:

• KDJF22 / KRS20V-22S – up to Ø100 mm;
• KDJF32 – up to Ø130 mm.

7. Consider vibration

For frequent cutting, compare vibration-control systems and follow applicable exposure guidance.

8. Check the package

Battery and charger contents vary by package.

Battery and package configurations

KDJF22

Type EK includes:

• two 4.0Ah batteries;
• 4A charger;
• wood blade;
• metal blade;
• plastic case.

Type Z includes:

• wood blade;
• metal blade;
• colour-box packaging;
• no Type EK batteries or charger.

KRS20V-22S

Type FK includes:

• two 5.0Ah batteries;
• 4A charger;
• wood and metal blades;
• plastic case.

Type EK includes:

• two 4.0Ah batteries;
• 4A charger;
• wood and metal blades;
• plastic case.

Type Z is the solo-tool configuration.

KDJF32

Type FK includes:

• two 5.0Ah batteries;
• 4A charger;
• BIM metal blade;
• HCS wood blade;
• belt clip;
• plastic case.

Type EK includes:

• two 4.0Ah batteries;
• 4A charger;
• blades;
• belt clip;
• plastic case.

Type Z is supplied without the batteries and charger included in FK/EK packages.

Manufacturer cutting-test examples

DCK publishes application test figures for its reciprocating saws.

For KDJF22 and KRS20V-22S, the manufacturer lists up to 45 cuts through 200 × 40 mm pine board using a 4.0Ah battery.

For KDJF32, DCK lists up to 110 cuts through 200 × 40 mm pine board using a 6.0Ah battery.

These figures are model-specific manufacturer test results and should not be interpreted as guaranteed runtime. Actual cuts per charge depend on the battery, blade, material, cutting technique, temperature and machine load.

KDJF32 vs KRS20V-22S vs KDJF22

Specification	KDJF32	KRS20V-22S	KDJF22
Platform	20V MAX	20V MAX	20V MAX
Motor	Brushless	Brushless	Brushless
Stroke	32 mm	22 mm	22 mm
Max. speed	2800/min	3000/min	3000/min
Wood capacity	255 mm	180 mm	180 mm
Steel/metal capacity	20 mm	15 mm	15 mm
Pipe capacity	Ø130 mm	Ø100 mm	Ø100 mm
Orbital action	4-position	–	–
Speed adjustment	6-speed	Variable	Variable
Tool-free blade change	Yes	Yes	Yes
Solo weight	3.3 kg	1.8 kg	1.8 kg

Frequently Asked Questions (FAQ)

How many DCK 20V MAX reciprocating saws are currently available?

The current range contains three models: KDJF32, KRS20V-22S and KDJF22.

Are DCK 20V MAX reciprocating saws brushless?

Yes. All three current models are specified with brushless motors.

What is the maximum cutting depth in wood?

KDJF22 and KRS20V-22S are specified up to 180 mm, while KDJF32 reaches up to 255 mm.

Can DCK reciprocating saws cut metal?

Yes, with the correct blade. The 22 mm models are specified up to 15 mm in metal, while KDJF32 is specified up to 20 mm in steel.

Can they cut pipes?

Yes. KDJF22 and KRS20V-22S are specified up to Ø100 mm pipe, KDJF32 up to Ø130 mm.

What is the difference between 22 mm and 32 mm stroke?

Stroke length describes blade travel during each cutting cycle. KDJF32 uses a longer 32 mm stroke, while the compact models use 22 mm.

Which model is lightest?

KDJF22 and KRS20V-22S both weigh approximately 1.8 kg without a battery. KDJF32 weighs approximately 3.3 kg.

Which DCK reciprocating saw has orbital action?

KDJF32 provides a four-position orbital/straight cutting system.

Can the blade be changed without tools?

Yes. All three current models use tool-free blade-change systems.

Do batteries and chargers come with the saw?

It depends on the package. FK and EK versions include batteries and a charger according to model, while Type Z versions are supplied without those battery-system components.

Reciprocating saw or circular saw?

Choose a circular saw for controlled straight and bevel cuts using a rotating blade. A reciprocating saw is better suited to versatile cutting, demolition, pipe cutting and working in difficult-to-access areas.

Tricks & Tips

• Choose the saw according to cutting capacity and access. The largest machine is not automatically the most convenient.
• Use the correct blade for the material. Wood and metal require different blade characteristics.
• Check blade length before cutting large material. The blade must remain long enough throughout its full stroke.
• Use tool-free blade change to switch blades according to the task rather than trying to use one blade for everything.
• Consider the 1.8 kg models for frequent overhead or confined-space cutting.
• Choose KDJF32 when greater capacity, orbital action and six-speed adjustment are genuinely useful.
• Support pipes and workpieces correctly before cutting.
• Do not judge runtime only by battery Ah. Blade condition, material and load can significantly affect cuts per charge.
• Check FK, EK and Z package codes before ordering.

Safety

Reciprocating saw blades move rapidly backwards and forwards and can extend beyond the material being cut. Check the space behind the workpiece before starting a cut and make sure the blade cannot contact concealed objects, electrical cables or other hazards.

Use the correct blade, secure the workpiece and keep hands away from the cutting path. Use appropriate eye, hearing and other task-specific personal protective equipment. Remove the battery before changing the blade, adjusting the tool or carrying out maintenance as required by the manufacturer.