DK255B Mitre Saw – 1800W Pure Copper Motor, 255mm Blade, 0-45° Bevel Cutting
Precision Sliding Compound Mitre Saw for Aluminium, Wood, and Plastic
Introduction
The DK255B mitre saw from DERA is a professional sliding compound mitre saw designed for cutting aluminium profiles, aluminium sheets, aluminium pipes, plastic pipes, wood, and more. With an 1800W high-power pure copper motor, 6000 r/min no-load speed, and a 255mm carbide-tipped saw blade, this machine delivers clean, accurate cuts across a wide range of materials.
Whether you are a contractor, a workshop owner, or a serious DIY enthusiast, the DK255B offers the power, precision, and durability you need for daily cutting tasks.
In this article, we will explore the key features, technical specifications, and real-world applications of the DK255B mitre saw.
Key Features at a Glance
| Feature | Benefit |
|---|---|
| 1800W pure copper motor | Powerful, long-lasting performance |
| 6000 r/min no-load speed | Fast, clean cuts |
| 255mm carbide-tipped blade | Cuts aluminium, wood, plastic |
| 0-45° bevel cutting | Multi-angle cuts for versatile applications |
| Four-point positioning dual rails | High precision, smooth extension |
| Extendable fence (146mm) | 11% wider than competitors |
| Laser indicator | Accurate alignment, convenient cutting |
| Rotating bracket | 0-45° mitre cuts |
| Aluminium cutting plate | Smooth cuts on thin materials |
| Large capacity clamp | Safer operation |
| Dust collection bag | Reduced dust, eco-friendly |
| Safety trigger guard | Prevents accidental start-up |
Powerful 1800W Pure Copper Motor
At the heart of the DK255B is an 1800W high-power pure copper motor. Unlike aluminium-wound motors that overheat and lose efficiency, the pure copper windings offer superior electrical conductivity and heat dissipation.
What this means for you:
High torque for cutting through dense materials
Consistent power output even under load
Cooler operation during extended use
Longer motor life
The motor drives the 255mm blade at an impressive 6000 r/min, ensuring smooth, fast cuts with minimal material tear-out.
Precision Four-Point Positioning Dual Rails
The DK255B features a four-point positioning dual rail system made with imported aviation-grade linear bearings. This design provides:
High cutting precision – The blade stays true to the cutting line
Smooth extension – The sliding mechanism moves effortlessly
Increased cutting width – Maximum cutting width of 300mm (30cm)
Whether you are cutting wide aluminium profiles or large wooden boards, the dual rail system ensures stability and accuracy.
Extendable Fence – 11% Wider Than Competitors
The DK255B comes with a high-precision widened and thickened base featuring an extendable fence that reaches 146mm – that is 11% wider than competing models.
Benefits:
Supports larger workpieces
Provides better material stability
Improves cutting accuracy on wide materials
0-45° Bevel and Mitre Cutting
The DK255B is designed for versatility:
| Cutting Type | Angle Range |
|---|---|
| Bevel cutting (tilt) | 0-45° |
| Mitre cutting (rotate) | 0-45° |
Cutting Capacities:
| Material Position | 0° Cut | 45° Cut |
|---|---|---|
| Vertical (height) | 70mm x 305mm | 70mm x 200mm |
| Horizontal (width) | 43mm x 305mm | 43mm x 200mm |
The precision engraved scale provides clear, accurate angle readings, allowing you to set up repeatable cuts quickly and confidently.
Laser Indicator – Cut with Confidence
The DK255B is equipped with a red laser indicator that projects a precise line onto the workpiece. This feature:
Shows exactly where the blade will cut
Eliminates guesswork and marking errors
Speeds up setup time
Improves cutting accuracy
The laser is powered by two AA batteries (included).
Safety Features
Safety Trigger Guard
Prevents accidental start-up. The trigger cannot be engaged without first releasing the safety lock-off.
Large Capacity Clamp
Securely holds the workpiece in place during cutting, reducing the risk of movement and kickback.
Machine Head Locking Pin
Locks the saw head in the down position for safe transport and storage.
Dust Collection Bag
Captures a significant portion of sawdust and debris, keeping your workspace cleaner and reducing airborne dust.
Additional Design Highlights
Aluminium Cutting Plate
Ensures clean, flat cuts even on thin materials. Prevents tearing and distortion.
Cutting Depth Stop
A quick-set depth stop allows you to adjust the cutting depth for grooving or partial cuts.
Telescopic Rods
Provide smooth extension and retraction of the sliding mechanism.
All-Aluminium Base
Solid and strong support for the entire machine. Resists warping and maintains accuracy over time.
Soft-Grip Handle
- The ergonomic soft-skin handle provides comfortable operation and reduces hand fatigue during extended use.
Luxurious Colour Transparent Blade Guard
Offers strong protection while allowing clear visibility of the blade and cutting line.
Dust Protection Device
Adjustable Fence (Backstop)
Can be repositioned to accommodate long workpieces. Provides a solid, accurate reference surface.
Gear Transmission – Superior Torque
The DK255B uses a gear drive transmission system (as opposed to a belt drive). This provides:
Higher torque for cutting dense materials
More direct power transfer from motor to blade
Reduced maintenance compared to belt systems
Technical Specifications
| Specification | Detail |
|---|---|
| Product Name | Mitre Saw / Sliding Compound Mitre Saw |
| Model | DK255B |
| Brand | DERA |
| Rated Voltage | 220V ~ 50Hz |
| Rated Input Power | 1800W |
| No-Load Speed | 6000 r/min |
| Blade Diameter | Φ255mm |
| Bevel Angle Range | 0-45° |
| Mitre Angle Range | 0-45° |
| Max Cutting Width (0°) | 305mm |
| Max Cutting Height (0°) | 70mm |
| Extendable Fence | 146mm |
| Laser | Red laser indicator (2 x AA batteries) |
| Base Material | All-aluminium |
| Transmission | Gear drive |
What's in the Box?
When you unbox the DK255B mitre saw, you will find:
DK255B mitre saw unit
Φ255mm carbide-tipped saw blade (installed)
Large capacity clamp
Dust collection bag
2 x AA batteries for laser
Wrenches for blade changes
User manual
Warranty card
Cutting Capabilities
The DK255B is designed to cut a variety of materials:
| Material | Suitability |
|---|---|
| Aluminium profiles | ✓ Excellent |
| Aluminium sheets | ✓ Excellent |
| Aluminium pipes | ✓ Excellent |
| Aluminium extrusions | ✓ Excellent |
| Plastic pipes | ✓ Good |
| Wood / Timber | ✓ Excellent |
| Copper | ✓ Good (use appropriate blade) |
Ideal Use Cases
🔧 Aluminium Fabrication
Cutting aluminium extrusions for window frames, door frames, railings, and signage.
Woodworking
Cross-cutting and mitre cutting for picture frames, trim, moulding, and furniture components.
Plastic Cutting
Cutting PVC pipes, plastic profiles, and acrylic sheets.
Construction Sites
On-site cutting of trim, baseboards, and framing materials.
Workshop Production
Repeatable, precise cuts for batch production of components.
Warranty and After-Sales
Please note the following warranty guidelines for the DK255B:
Covered:
Normal wear of commutator (wear depth less than 0.10-0.20mm, no visible groove)
Not Covered:
Burnout due to overload
Normal wear parts (switch, cable, gears, carbon brushes, plastic housings)
Manually damaged components
Motor (as a separate component)
Policy Note: The complete machine is generally non-returnable. For new machines with defects upon arrival, please contact customer service for case-by-case evaluation. Replacement parts or repair options may be offered.
Why Choose DERA?
DERA is a trusted brand in power tools, known for:
High-performance pure copper motors – Built to last
Precision engineering – Four-point positioning dual rails
Safety-first design – Trigger guard, large clamp, dust collection
Value for money – Professional features at competitive prices
The DK255B is part of DERA’s commitment to delivering high performance and cost-effective cutting solutions to workshops and job sites worldwide.
Final Verdict
The DK255B mitre saw from DERA is a powerful, precise, and versatile sliding compound mitre saw. With its 1800W pure copper motor, 6000 r/min blade speed, 0-45° bevel and mitre capability, and four-point positioning dual rails, it handles a wide range of cutting tasks with ease.
Whether you are cutting aluminium profiles for window frames, trimming wood for picture frames, or cutting plastic pipes for plumbing, the DK255B delivers clean, accurate cuts every time.
Upgrade your workshop with the DK255B mitre saw today.
Ready to Add the DK610E to Your Tool Collection?
🔹 1800W pure copper motor – Powerful and durable
🔹 6000 r/min no-load speed – Fast, clean cuts
🔹 Φ255mm carbide-tipped blade – Cuts aluminium, wood, plastic
🔹 0-45° bevel and mitre – Versatile angle cutting
🔹 Four-point positioning dual rails – High precision
🔹 Laser indicator – Cut with confidence
🔹 1.6m cable with CCC plug – Safe and convenient
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