21V Brushless Cordless Rotary Hammer Drill

Product Overview

Engineered for effortless heavy-duty drilling in concrete, stone, brick, and tough masonry, our 21V Brushless Cordless Rotary Hammer Series delivers pro-grade impact performance without the hassle of cords. Driven by advanced brushless motor technology, this tool series offers up to 50% longer working efficiency, extended motor lifespan, and zero carbon brush maintenance. The lineup features maximum concrete drilling capacities ranging from compact Φ12mm (ZC-10/12) up to heavy-duty Φ28mm (ZC-26), with impact frequencies reaching up to 5000 bpm. Equipped with an SDS-Plus quick-change chuck, an ergonomic anti-vibration soft grip, and intelligent 21V Li-ion battery protection, it is the ultimate cordless solution for electricians, plumbers, construction crews, and HVAC installers.

Key Features

Advanced Brushless Motor Technology:Eliminates carbon brush wear to deliver higher motor torque, reduced internal heat generation, longer runtime per charge, and maintenance-free operation.

Powerful Impact Energy for Concrete:Precision pneumatic impact mechanism generates high blow energy with impact frequencies up to 5000 bpm, effortlessly penetrating reinforced concrete.

Broad Drilling Range: Φ12mm to Φ28mm:Complete model options with maximum drilling diameters from 12mm for quick light anchors up to 28mm for heavy structural bolt anchoring.

Cordless Freedom & 21V Li-Ion Battery:Powered by a high-capacity 21V battery system featuring fast-charging capability and electronic safety protection against over-current and over-heating.

Ergonomic Anti-Vibration Design:Features a dynamic anti-vibration handle and soft rubber grip that absorbs operational kickback, significantly reducing operator wrist fatigue.

Applications

Electrical & Plumbing Installation: Drilling anchor holes in concrete walls for conduit clamps, cable trays, and pipe supports.

Building Construction & Anchoring: Precision drilling for chemical anchors, mechanical expansion bolts, and rebar doweling.

Interior Renovation & Tile Removal: Drilling mounting holes in tile, brick, or mortar, and light chiseling/grooving.

Stone & Masonry Fabrication: Fast hole drilling in granites, bricks, hollow blocks, and outdoor stone cladding.

Specifications

Why Choose Us

Full Range Matrix: Offers targeted models for light electrical work as well as heavy structural concrete drilling.

Heavy-Duty Pneumatic Cylinder & Motor Longevity: Premium precision cylinder components prevent pressure leakage under high heat and heavy vibration.

Rigorous Fatigue & Drop Testing: Every batch is 100% load-tested on high-strength concrete blocks before leaving the factory.

Manufacturer Direct Wholesale Supply: Direct B2B pricing, customizable battery pack options, and reliable supply capacity for international distributors.

Customization Services

We partner with power tool brands, hardware importers, and retail chains worldwide:

Custom Housing Colors: Mold tool housings in custom Pantone brand colors (e.g., Industrial Red, Deep Blue, Safety Yellow, Matte Black).

Brand Private Labeling: High-definition logo printing on housings, custom battery pack labels, and laser-etched nameplates.

Battery Pack Options: Customize 21V Li-ion battery capacity (e.g., 3.0Ah, 4.0Ah, 6.0Ah) using high-rate 18650/21700 cells.

BMC Carrying Case & SDS Drill Bit Kits: Custom heavy-duty BMC carrying cases, color retail display boxes, depth stops, and inclusion of SDS-Plus drill bit sets.

FAQ

Q1: What is the maximum concrete drilling capacity of the flagship model in this series?

A: Model ZC-26 delivers the maximum concrete drilling diameter of Φ28mm, with an impact frequency of up to 5000 bpm at 21V.

Q2: What type of drill bit chuck is compatible with these cordless rotary hammers?

A: All models utilize a standard SDS-Plus quick-change chuck system, allowing rapid, tool-free installation of standard masonry drill bits and chisels.

Q3: How does the brushless motor benefit heavy concrete drilling?

A: The brushless motor maintains consistent torque under heavy drilling loads without bogging down, generates lower internal heat, and extends battery runtime by up to 50%.

Q4: Do these rotary hammers feature anti-vibration technology for long-time use?

A: Yes, the series is engineered with ergonomic rubberized soft grips and dynamic internal shock absorption that reduces recoil vibration to protect the user's wrists.

Q5: What is the Minimum Order Quantity (MOQ) and delivery lead time for OEM branding orders?

A: The standard MOQ for custom housing colors, brand logo printing, and custom BMC box packaging is 300 to 500 sets per model, with typical delivery within 35 to 45 days.