DONG CHENG DZZ02-250 Diamond Core Drill Max 250 mm

DONG CHENG DZZ02-250 Diamond Core Drill Stand Max 250 mm
The DONG CHENG DZZ02-250 250 mm Diamond Core Drill is an industrial-grade concrete coring tool trusted by electricians, plumbers, and general contractors. Powered by a high-grade 3,800 W pure copper motor, it delivers immense torque to drive large diamond core bits up to 10 inches (250 mm). Mounted on a stable, rigid steel drill stand, it ensures coring holes for AC piping, drainage lines, or concrete core sampling is smooth, fast, safe, and minimizes damage to surrounding structures.

Features
- High-Power 3800W Motor: Ultra-powerful 3,800 W electric motor delivers robust and stable driving power, effortlessly handling concrete and thick embedded rebar without bogging down.
- Mechanical Safety Clutch: Maximum safety with an overload safety clutch that immediately disengages power from the motor if the core bit binds or jams on rebar, preventing sudden kickback and protecting the gear system.
- Integrated Water Feed System: Features a brass fitting to supply cooling water directly into the core bit center, reducing diamond segment heat, preventing bit burnout, and effectively suppressing coring dust.
- Rigid Column & Precision Feed: The stand's column and drive rack are crafted from extra-thick hardened metal to withstand high thrust and torque, providing smooth, steady feeds without bit wobble for perfectly round, accurate holes.
- Overload Circuit Breaker: On/off switch equipped with an automatic circuit breaker system (Overload Protection) that prevents the motor, field coil, and armature from burning out due to overload.

Applications
- Concrete coring for floor and beam openings for running supply/drainage pipes, fire sprinkler pipes, and industrial electrical conduits.
- Drilling openings for ventilation ducts in large air conditioning systems in buildings and shopping malls.
- Drilling for installing large anchor bolts or heavy structural steel columns in civil engineering works.
- Suitable for structural contractors, MEP installers, and teams performing concrete strength testing on roads or foundations.

Specification
- Model Number: DZZ02-250
- Rated Power Input: 3,800 Watts (W)
- Rated Voltage: 220 - 240 Volts (V) / 50 Hertz (Hz)
- Max. Drilling Diameter in Concrete: 250 millimeters (10 inches)
- No-Load Speed: 390/1100 rpm (r/min)