DERA DK426C Rotary Hammer: 1200W, 26mm, Dual‑Function for Concrete & Chiselling
Need a DERA DK426C rotary hammer for drilling into concrete, brick, or stone? You’ve come to the right place. This 1200W machine offers a maximum 26mm drilling diameter and a dual‑function design. Therefore, it is a great choice for electricians, plumbers, and builders.
1. Core Performance: 1200W High Power, 800r/min Efficient Drilling
The DK426C is powered by a 1200W high‑efficiency copper‑wound motor (stator and rotor both use Wuhan Steel 800 silicon steel sheets with pure copper enameled wire). Rated at 220V / 50Hz, the no‑load speed reaches 800r/min and the maximum drilling diameter is Φ26mm. Whether in concrete, brick walls or blocks, it drills clean, accurate holes to meet most job site requirements – interior/exterior renovation, plumbing/electrical installation, guardrail fixing, and more.
Dual‑function design – combines “hammer drilling” and “chiseling (rotation stop)”. Hammer drilling mode is for making holes to install expansion bolts or pass pipes through walls. Chiseling mode allows light chipping, grooving and breaking – two machines in one, improving on‑site efficiency.
Key Component Breakdown: A Rotary Hammer That’s Hard from the Core
According to the official DERA configuration list, the DK426C uses materials and processes that match top‑tier brands:
| Component | Material / Specification | Advantage |
|---|---|---|
| Housing | PA3‑GF30 reinforced nylon (color 144C) | Impact‑resistant, insulating, aging‑resistant, comfortable grip |
| Gear case | High‑quality die‑cast aluminium (D116 matt silver) | Precision casting, good heat dissipation, rigid structure |
| Rotor / Stator | Wuhan Steel 800 + pure copper windings | High magnetic flux, low temperature rise, no burn‑out under continuous use |
| Commutator | Φ28×Φ12×15H, 24‑segment hook type | Wear‑resistant, arc‑resistant, stable commutation |
| Eccentric shaft / Connecting rod / Cylinder | 40Cr alloy steel, hardness 50‑55HRC | Induction hardened, impact‑resistant, fatigue‑resistant, long life |
| Piston | LY11 high‑strength aluminium + GCr15 piston pin | Lightweight, good sealing, strong blow energy |
| Main / small gear | 20CrMnTi carburised and quenched, hardness 45‑50HRC | High tooth surface hardness, low noise, no tooth breakage |
| Bearings | KOYO, CYGS, ZXBRS, etc. (models: 627, 6002Z, 6907RS, etc.) | Precision rolling, reduced friction, smooth operation |
| Carbon brushes | IM839, 14×6×10mm | Self‑extinguishing material, low sparking, protects commutator |
| Power cord | CCC certified 2×0.75mm², 2.35m length | Cold‑resistant, flame‑retardant, flexible for job sites |
| Switch | CQC certified FA2‑10/2W, 10A | High current rating, crisp feel, with locking function |
In addition, the cylinder is fitted with a rubber piston seal for excellent air tightness. The impact mechanism (eccentric shaft, connecting rod, piston) efficiently converts rotational motor power into high‑frequency impact energy – each blow is solid and effective.
How to Use the DERA DK426C Rotary Hammer Safely
Follow these steps to get the best results from your DERA DK426C rotary hammer:
Pick the right bit – use a carbide‑tipped bit for concrete.
Set the function dial – choose “hammer drilling” for holes, or “chiselling” for grooving.
Hold the tool firmly – use both hands. The side handle helps control torque.
Start slowly – apply steady pressure. Do not force the tool.
Let it cool – after two minutes of continuous use, give the motor a break.
Always wear safety glasses, gloves, and ear protection. Concrete dust is harmful, so use a mask if needed.
User‑Friendly and Safety Features
Side‑mounted slide switch – easy one‑hand operation, lockable to reduce finger fatigue.
Dust protection – air intakes and bearings are designed to keep dust out, which extends the tool’s life.
All‑copper motor + large fan (Φ70mm, 41 blades) – high cooling efficiency and better overload protection.
Complete accessories – includes a manual, warranty card, special lubricant, and a chiselling bit. Ready to use out of the box.
Packaging and Shipping
The DERA DK426C comes in a 350g A‑grade kraft paper colour box with matt lamination, plus a double‑wall, extra‑thick imported A‑grade kraft outer carton. Inside, two units sit side by side. Net weight per unit is about 5.12 kg, and gross weight per master carton is 28.56 kg (bulk packaging). The colour box looks clean and modern, which strengthens the DERA brand identity. The outer carton is sealed with parallel strapping and dedicated tape – good for long‑distance shipping and retail shelves.
Who Should Use the DERA DK426C Rotary Hammer?
Target users: renovation plumbers, electricians, security system installers, door/window fitters, and concrete drilling operators.
Typical jobs:
Drilling holes in walls (for air conditioners, water heaters, or security camera brackets)
Grooving for conduits and junction boxes (use chiselling mode)
Fast drilling in brick‑and‑concrete structures and lightweight blocks
Final Verdict
With solid materials, a 1200W high‑power motor, and flexible dual‑function switching, the DERA DK426C rotary hammer gives you real “hard‑core” performance at an affordable price. If you want a tough, powerful, reliable rotary hammer that won’t burn out and won’t break the bank, the DERA DK426C rotary hammer belongs in your toolbox
Quick Specifications
Model: DERA DK426C
Voltage/Frequency: 220V～ 50Hz
Rated Input Power: 1200W
No‑Load Speed: 800 r/min
Max Drilling Diameter (concrete): Φ26mm
Functions: Hammer drilling + Chiselling (rotation stop)
Net Weight: 5.12 kg
Brand: DERA
Manufacturer: Zhejiang PaiDong Hardware Tools Co., Ltd.
No compromise on quality – DERA helps you work with confidence.