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
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1800W Motor: Designed for demanding core drilling applications.
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Three-Speed Mechanical Control: Select from three speed settings for different drilling diameters.
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Large Drilling Capacity: Supports specified brick-wall drilling diameters up to 190mm.
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Oil-Lubricated Gearbox: Designed to support smooth mechanical operation.
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Handheld Design: Offers flexibility for suitable on-site drilling tasks.
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Water Supply Accessories: Includes a water pipe and pipe connector.
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Auxiliary Handle: Helps improve grip and control during operation.
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Plastic Carrying Case: Supports storage and transportation.
Applications
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Large-diameter drilling in brick walls.
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Plumbing pipe and utility penetrations.
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Building-service installation work.
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Construction and renovation projects.
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Creating openings for compatible pipes and conduits.
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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
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Dongcheng DZZ190 Core Drilling Machine – 1 unit
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Water Pipe – 1 piece
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Pipe Connector – 1 piece
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Open-End Wrench – 1 piece
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Auxiliary Handle – 1 piece
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Carbon Brush – Included
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Plastic Carrying Case – 1 piece


















