Hangzhou Xinabo Intelligent Electromechanical Technology Co., Ltd manufactures lithium-ion brushless rotary hammers as the drilling and chiseling end of our Engineering Construction Pipeline Connection Solutions programme. The range covers 21V cordless hammers with SDS-plus chucks and 1.7J to 4.5J impact energy, sized for anchor holes, hanger and bracket supports, pipe clamp fixing and penetration work in concrete, masonry and stone. Fire protection, MEP installation, building construction and equipment maintenance teams use them where a corded hammer cannot reach or where site power is not yet available.
We have built pipe connection and thread processing equipment since 2010, developing nine generations of intelligent threading machines and holding 30 patents along the way. The cordless tools share that engineering base: brushless drive, electronic protection and a common 21V battery platform that also feeds the rest of our Cordless Power Tools range.
Our Range in This Product Family
As a Engineering Construction Pipeline Connection Solutions manufacturer, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.
Three rotary hammer models cover the span from light fixing to heavy concrete penetration. Every unit is a three-mode machine — drill, chisel and hammer — driven by a brushless motor with electronic protection and a vibration-damping handle layout.
21V 3-Mode Drill / Chisel / Hammer — 4.5J
The highest-impact unit in the range, built for drilling and chiseling in concrete, stone and other hard materials. Free switching between drilling, chiseling and impact modes, vibration damping for extended operation, and built-in overheat and overload protection with adjustable no-load speed and impact frequency.
XJ.709 21V High-Magnetic Brushless Rotary Hammer — 1.7J
The general-purpose model. The high-magnetic brushless motor delivers 30% higher torque and 20% lower energy consumption than a standard brushless motor, with an SDS-plus quick-change chuck for tool-free bit changes. Triple protection covers overheat, overload and under-voltage, and the vibration-reduction system keeps hand fatigue down on repetitive fixing work.
XJ.728 21V High-Magnetic Brushless Rotary Hammer (Heavy-Duty) — 2.8J
The heavy-duty option for high-hardness concrete and granite. An upgraded high-magnetic brushless motor raises impact energy to 2.8J, and the intelligent control system adjusts power output according to load resistance. An extended vibration-damping handle supports long shifts, with the same triple safety protection.
Model Comparison and Application Matching
| Model |
Impact energy |
Chuck |
Typical fit |
| 21V 3-Mode Drill / Chisel / Hammer |
4.5 J |
SDS-plus |
Heavy anchor and penetration work in concrete and stone; renovation, plumbing and electrical installation |
| XJ.709 High-Magnetic Brushless |
1.7 J |
SDS-plus quick-change |
General fixing in concrete, stone and wood; bracket, clamp and hanger setting; lighter overhead work |
| XJ.728 High-Magnetic Brushless (Heavy-Duty) |
2.8 J |
SDS-plus |
High-hardness concrete and granite; large-scale renovation and engineering projects |
Where a project mixes anchor drilling with light steel fixing, the Lithium-Ion Brushless Hammer Drill/Driver covers the smaller diameters, while the rotary hammers handle the masonry and concrete side of the same installation.
Where the Hammers Fit on a Pipeline and MEP Site
Rotary hammer work on a pipeline or fire protection contract sits before the pipe itself: hanger anchors into a concrete soffit, bracket and clamp fixing to slab or wall, sleeve and penetration openings, and support steelwork where a hole must be drilled rather than punched.
- Fire protection engineering — sprinkler main hangers, riser clamps and pipe support anchors in concrete ceilings and walls.
- Building construction and MEP — cast-in and post-installed fixing for pipe routes, cable tray supports and equipment bases.
- Renovation and retrofit — chiseling out old fixings, opening pockets and re-drilling in existing structures.
- Equipment maintenance — anchor replacement and baseplate work on pumps, compressors and skids.
The cordless format matters most on overhead work and on sites where temporary power is not yet live. A 21V platform removes the cable run and the trailing-lead risk, and the same battery family powers our cutting, punching and wrench tools so a crew carries one charging set.
Motor, Battery Platform and Controls
Brushless motors are used across the range because they remove carbon brush wear, hold torque under load and reduce energy consumption per hole. On the high-magnetic versions we specify a stronger magnetic circuit, which is where the torque and consumption figures come from.
- Battery platform — 21V lithium-ion, shared with our cordless cutting, punching, wrench and spray tools; backpack battery packs are available for long shift work.
- Mode selection — drill, chisel and hammer on all three models, set at the selector rather than by changing tooling.
- Electronic protection — overheat, overload and under-voltage cut-outs that stop the tool before the motor or battery is damaged.
- Load-adaptive output — the XJ.728 control system reads load resistance and adjusts power delivery, which keeps speed stable as the bit meets harder aggregate.
- Vibration control — damping in the handle assembly; the XJ.728 uses an extended damped handle for prolonged overhead work.
Tooling, Materials and Working Limits
All three models use the SDS-plus interface, so standard masonry, cross-tip and chisel bits fit without adapters. Hammer mode is intended for concrete, masonry and stone; drill-only mode covers wood and light steel with the appropriate bit, and chisel mode handles removal work.
Bit diameter, hole depth and aggregate hardness decide which model suits a task. The 1.7J unit is the sensible choice for repetitive small-diameter fixing where tool weight and control matter more than penetration speed. The 2.8J and 4.5J units take over as diameter, depth and concrete strength rise, or where chiseling volume is significant.
Quality Control and Compliance Evidence
Our production base in Hangzhou, Zhejiang, China runs incoming material inspection, in-process checks and finished-product testing, with a stated finished product rate of 99.9%. Cordless tools are function-tested for mode switching, electronic protection response and chuck run-out before packing.
Our certification file includes an Attestation of Conformity referencing the Machinery Directive and the Electromagnetic Compatibility Directive, alongside invention, utility model and design patents covering pipe connection and thread processing equipment. Documents relevant to a specific order are issued with the shipment.
Information We Use to Configure Your Solution
We prepare a rotary hammer proposal from the working point rather than from a catalogue number. The inputs below are what our engineering team needs to fix the model, battery quantity and accessory scope.
| Project input |
How it shapes the configuration |
| Base material and hardness |
Selects impact energy class and whether the load-adaptive XJ.728 is required |
| Hole diameter, depth and anchor type |
Confirms SDS-plus bit range and drilling versus chiseling duty |
| Holes per shift and shift pattern |
Sets battery and charger quantities, and whether backpack packs are specified |
| Working position — overhead, wall or floor |
Drives tool weight, handle and vibration-control choice |
| Site power availability and charging location |
Determines charger voltage, quantity and charging logistics |
| Spare parts, documentation language and packaging |
Defines the delivery scope, labels and training material |
Maintenance, Spare Parts and Training
Brushless drive removes brush replacement from the maintenance schedule, leaving chuck condition, switch function, ventilation paths and battery health as the routine checks. We supply spare parts for our products and support installers with replacement components and service guidance.
Our technical team provides product training and demonstrations for partners and site crews, covering mode selection, bit fitting, protection behaviour and battery care. Training scope and scheduling are agreed as part of the order.
These hammers sit inside a wider equipment set: the Pipe Fabrication & Installation Equipment range covers cutting, threading, tightening and pressure testing, so a pipeline package can be quoted as one coordinated scope. The current Lithium-Ion Brushless Rotary Hammer manufacturer page lists the models and their stated impact energies.
Frequently Asked Questions
Which rotary hammer should I specify for overhead sprinkler hanger anchors?
For repetitive small-diameter anchors into a concrete soffit, the XJ.709 at 1.7J gives the best control-to-weight balance. Where the slab is high-strength or the anchor diameter is larger, the 2.8J XJ.728 holds speed better under load and reduces drilling time per hole.
Do the rotary hammers share batteries with your other cordless tools?
Yes. All three models run on the 21V lithium-ion platform used across our cordless cutting, punching, wrench and spray tools, and backpack lithium battery packs are available for extended shift work. That means one charging set can serve a full crew.
What protection is built into the tools?
Every model carries electronic protection against overheat, overload and under-voltage. The XJ.728 adds a control system that reads load resistance and adjusts power output automatically, which protects the motor when the bit meets hard aggregate.
Can the hammers be used for chiseling as well as drilling?
Yes. All three are three-mode machines with drill, chisel and hammer settings selected at the mode switch. Chisel mode is used for removing old fixings, opening pockets and breaking out masonry; drill-only mode covers wood and light steel with the correct bit.
What do you need from us to quote a rotary hammer package?
Send the base material and hardness, hole diameter and depth, anchor type, working position, expected holes per shift, site power availability, and any spare parts, documentation language or packaging requirements. With those inputs we confirm the model mix, battery and charger quantities, bit scope and delivery configuration.
English
Español
عربى
