The Dongcheng DZZ190 Diamond Core Drilling Machine is a powerful 1800W handheld drilling tool designed for large-diameter drilling applications in brick walls and suitable masonry materials. Its three-speed mechanical gearbox allows users to select an appropriate speed according to the drilling diameter and application.

With drilling capacities ranging from 15mm to 190mm across three gear settings, the DZZ190 is suitable for construction, plumbing, renovation and building-service installation work. The oil-lubricated mechanical system is designed to support reliable gearbox operation, while its handheld configuration offers flexibility on the job site.

Supplied with water-supply accessories, an auxiliary handle and a plastic carrying case, the Dongcheng DZZ190 is a practical choice for professional construction and installation work.

Key Features

1800W Motor: Designed for demanding core drilling applications.
Three-Speed Mechanical Control: Select from three speed settings for different drilling diameters.
Large Drilling Capacity: Supports specified brick-wall drilling diameters up to 190mm.
Oil-Lubricated Gearbox: Designed to support smooth mechanical operation.
Handheld Design: Offers flexibility for suitable on-site drilling tasks.
Water Supply Accessories: Includes a water pipe and pipe connector.
Auxiliary Handle: Helps improve grip and control during operation.
Plastic Carrying Case: Supports storage and transportation.

Applications

Large-diameter drilling in brick walls.
Plumbing pipe and utility penetrations.
Building-service installation work.
Construction and renovation projects.
Creating openings for compatible pipes and conduits.
Professional masonry drilling applications.

Use compatible core bits and follow the manufacturer's instructions for water supply, drilling speed and material suitability.

Technical Specifications

Specification	Details
Brand	Dongcheng
Model	DZZ190
Product Type	Diamond Core Drilling Machine
Rated Power Input	1800 W
Speed Control	3-Speed Mechanical
Gear 1 – Brick Wall Drilling Capacity	110–190 mm
Gear 1 – No-Load Speed	750 RPM
Gear 2 – Brick Wall Drilling Capacity	65–110 mm
Gear 2 – No-Load Speed	1650 RPM
Gear 3 – Brick Wall Drilling Capacity	15–65 mm
Gear 3 – No-Load Speed	3300 RPM
Lubrication	Oil Lubrication
Machine Type	Handheld
Net Weight	6.0 kg
Power Source	Corded Electric
Packaging	Plastic Carrying Case

Gear-Wise Specification Table

Gear	Drilling Capacity in Brick Wall	No-Load Speed
Gear 1	110–190 mm	750 RPM
Gear 2	65–110 mm	1650 RPM
Gear 3	15–65 mm	3300 RPM

Package Contents

Dongcheng DZZ190 Core Drilling Machine – 1 unit
Water Pipe – 1 piece
Pipe Connector – 1 piece
Open-End Wrench – 1 piece
Auxiliary Handle – 1 piece
Carbon Brush – Included
Plastic Carrying Case – 1 piece

Dongcheng DZZ190 Diamond Core Drilling Machine 1800W, 3-Speed Handheld Core Drill for Brick Wall Drilling, 15–190mm Drilling Capacity

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