XJ.570 21V Lithium-Ion Brushless Impact Wrench — 750N·m Torque, 1/2" Square Drive

Hangzhou Xinabo Intelligent Electromechanical Technology Co., Ltd designs and builds intelligent pipe threading equipment, pipe fabrication machinery and the cordless tools that support site installation. The XJ.570 21V Lithium-Ion Brushless Impact Wrench — 750N·m Torque, 1/2" Square Drive manufacturer is the high-torque bolting tool in our Lithium-Ion Brushless Wrench range: a light industrial-grade unit for M10–M30 fasteners, built around a 5220 brushless motor and a planetary gear impact mechanism. We supply it to crews that need wheel, chassis, steel structure and equipment bolting without an air line or a mains lead.

• 750 N·m maximum torque, 0–3200 bpm impact rate, 0–2150 rpm no-load speed
• 1/2" square drive anvil with an M10–M30 bolt range
• 21V DC platform with the 5220 brushless motor
• Intelligent power-off protection that stops the tool as the bolt reaches full tightness
• Battery, charger and portable tool case supplied as standard

Where the XJ.570 Fits on Site

The XJ.570 is a cordless bolting tool for work where a socket has to go onto a fastener quickly, in the field or at a bench, and where dragging a hose or a lead across the work area costs more time than the joint itself. Its 1/2" square drive accepts standard impact sockets, so one tool covers wheel nuts, chassis and suspension bolts, scaffold couplers, steel structure connections and machinery repair fasteners.

Specifications and What Each Figure Means

Torque figures are quoted at the anvil, which is the only place a manufacturer can state them repeatably. What reaches the joint is a different number: thread friction, washer face condition, rust, paint and the length of any extension all absorb part of the output. On a run of structural or safety-related connections, we set the working method from a sample joint checked with a calibrated torque wrench rather than from the catalogue figure alone.

Brushless Drive, Impact Mechanism and Torque Control

The 5220 brushless motor drives a planetary gear impact mechanism, a combination chosen for sustained bolting rather than for peak numbers on a single joint. Because commutation is electronic, there are no brushes to arc, wear or replace, and the tool keeps its output as the pack drains instead of fading with brush wear.

• One-touch forward/reverse switch — direction changes without moving the hand off the grip, useful when a bolt has to be run out and back in during a repair.
• Intelligent power-off protection — the tool stops automatically once the bolt is fully tightened, which limits over-torquing on repeat work and protects studs, alloy wheels and thin-wall fittings.
• Anti-slip, vibration-damping handle — keeps the grip stable through the impact cycle, where most of the operator fatigue in high-torque bolting originates.
• Variable-speed trigger — run-down and final seating are controlled from the trigger, so the operator can stop short of the protection point on sensitive joints.

The Lithium-Ion Brushless Wrench Range

The XJ.570 is one point in a range we build across torque classes, so a fleet can be equipped for the heaviest connection and the tightest access from the same supplier and the same battery platform.

Battery, Charging and Runtime Planning

Each XJ.570 ships as a working kit with battery, charger and portable tool case, so a crew can be issued a complete unit rather than a bare tool. For shift-long bolting we plan pack count against the bolt count per shift and keep a charging station away from the work face, where dust and metal swarf collect.

Where a single tool has to run continuously across a large structure or a long maintenance window, the 20Ah/30Ah backpack lithium battery pack powers multiple 21V–60V tools and removes the pack swap from the working cycle. We confirm the pack, charger and case combination against the tool list on each order.

Matching the Wrench to the Joint

Safe Use and Operator Practice

A 750 N·m tool develops real reaction torque at the housing. The anti-slip vibration-damping handle and the one-touch direction switch are there to keep both hands committed to the tool through the impact cycle, and the power-off protection removes the temptation to keep hammering a fastener that is already seated.

• Confirm the socket is fully seated on the fastener before pulling the trigger; a partly engaged socket is the most common cause of damaged nuts and anvil wear.
• Support the tool weight on vertical and overhead work so the reaction is taken through the grip, not through the wrist.
• Check the anvil retaining ring and socket drive square for wear at each shift change on high-volume bolting work.
• Keep battery contacts clean and dry; store packs away from direct sun and metal swarf.

Quality Control, Documentation and Acceptance

We build in a 10,000 m² factory in Hangzhou with a finished-product rate we hold at 99.9%, and the company has been recognised as a National High-Tech Enterprise with 30 patents covering pipe processing and clamping equipment. Attestation of conformity documentation for the Machinery Directive and the Electromagnetic Compatibility Directive is held for our equipment and is issued with export orders where the destination requires it.

For a tool order, acceptance is straightforward: function check on every unit, battery and charger pairing verified against the supplied pack, case contents confirmed against the packing list, and a sample joint tightened and checked with a calibrated torque wrench where the application calls for a documented setting.

Maintenance, Spare Parts and Serviceability

The brushless motor removes the routine brush replacement that dominates the service life of conventional corded impact tools, which leaves the anvil, socket retention, switch, trigger and battery contacts as the wear points to watch. We hold a spare parts range for our products and support installers with replacement components rather than whole-unit replacement.

Our technical team provides product demonstrations and training for partner teams on request, covering correct socket use, torque verification and battery handling, so a distributor's service desk can support the tool in the field.

Information We Use to Configure Your Solution

Frequently Asked Questions

What does 750 N·m actually achieve on an M20 bolt?

750 N·m is the peak torque the XJ.570 delivers at the 1/2" anvil. The preload that reaches an M20 joint depends on thread lubrication, washer face friction and joint stiffness, so we treat the figure as the tool's capability and confirm the working method on a sample joint with a calibrated torque wrench. For fasteners at the top of the M10–M30 range, a two-stage approach gives more consistent results than a single continuous burst.

Does the XJ.570 have selectable speed modes?

The XJ.570 uses a variable-speed trigger with a one-touch forward/reverse switch and intelligent power-off protection at full tightness. Where stepped speed selection is required for mixed fastener sizes on one line, the XJ.580 offers three adjustable speeds and the XJ.523 offers four.

What is included with each tool?

Every XJ.570 is supplied with a battery, a charger and a portable tool case. Sockets are not part of the standard kit; we specify the socket set against the fastener sizes on the order so the tool arrives ready to work.

Can the same battery run other tools in the range?

Yes. The XJ.570 sits on our 21V platform, which also runs the brushless rotary hammers, hammer drills, angle grinders, circular saws and hole punchers. Fleets that standardise on 21V carry fewer pack types and one charging routine across the site.

How do you support distributors after delivery?

We hold spare parts for our products and provide product demonstrations and training for partner teams on request, covering socket selection, torque verification and battery handling. Documentation for the Machinery Directive and the Electromagnetic Compatibility Directive is issued with export orders where required.