Hangzhou Xinabo Intelligent Electromechanical Technology Co., Ltd builds pipe fabrication equipment and the Xiaojia cordless power tool range, and the XJ.853 is the 140mm saw in that cordless group. A 21V high-magnetic brushless motor drives a 140mm blade to 45mm depth at 90°, the base bevels from 0-45°, and a laser guide line projects the cut path onto the workpiece. We supply it to renovation crews, carpentry shops and furniture fabricators who break down panels and trim timber on site and want an edge that does not need a second pass.
Where the XJ.853 Sits in Our Cordless Range
The saw shares its 21V platform with our brushless angle grinders, rotary hammers, impact wrenches and hammer drills, so a crew can carry one battery type across several tools. It is a handheld cutting tool rather than a bench machine: compact, single-blade, and intended for straight cuts in sheet and section timber, board and plastics.
- Carpentry: straight panel breakdown, furniture blanking, wardrobe carcass work and door trimming.
- Renovation: wood floor installation, ceiling keel and batten cutting, wall panel sizing.
- Outdoor work: yard timber processing, camping gear fabrication and outdoor furniture repair.
Reading the XJ.853 Specification
Each figure below translates into a working limit on site. We confirm the working point against your material and cut volume before a batch is prepared.
| Parameter |
XJ.853 value |
What it means in use |
| Rated voltage |
21V DC |
Common platform with our other 21V cordless tools |
| Motor type |
High-magnetic brushless |
No brush wear parts; speed holds under load |
| Blade diameter |
140mm |
Light enough for one-hand control on vertical work |
| Max cutting depth |
45mm at 90° / 30mm at 45° |
Covers 38mm battens, 40mm worktop and stacked 18mm board |
| No-load speed |
0-6200rpm |
Ramps up from start; suited to timber, board and plastics |
| Cutting angle |
0-45° adjustable |
Chamfers, splayed trims and angled keel cuts |
| Auxiliary |
Laser guide line |
Cut path shown on the workpiece before the blade enters |
| Safety features |
Anti-kickback guard, overload protection, anti-slip handle |
Guard closes over the blade; electronics cut power on overload |
| Standard accessories |
Blade, hex wrench, battery, charger, carry bag |
Kit runs from the case without extra purchases |
Material Fit and Blade Choice
The XJ.853 is built around wood-based sheet, solid timber and plastics. Melamine-faced and veneered board cut with a fine-tooth blade leave a cleaner line than a coarse rip blade, while solid timber and thick battens clear faster with fewer, larger teeth. Tell us the material mix on a project and we will confirm the blade specification that matches the kit.
Steel pipe, conduit and threaded rod are outside this saw's working range. For spark-free, burr-free metal cutting we point customers to our 220V 14" permanent magnet variable frequency cold cutting saw, which is the correct machine for pipe and profile work on a fabrication site.
Laser Guide, Bevel Setting and Cut Quality
The laser line removes the guesswork of walking a pencil mark past the blade. On a first cut, run the saw alongside a straight edge and check that the projected line sits on the intended kerf before committing to a finished panel.
- Set the bevel on the 0-45° scale and lock the base before the blade reaches the work.
- Support both sides of the cut so the offcut does not pinch the blade on exit.
- Let the blade reach full speed before entry, then feed at a steady rate rather than forcing the cut.
- Keep the base plate flat on the surface; lifting one side is the usual cause of a stepped edge.
Battery Platform and Configuration
The saw ships as a complete kit with battery, charger, blade, hex wrench and carry bag. Where a crew runs several cordless tools through a shift, our backpack lithium battery pack in 20Ah and 30Ah extends runtime across 21V tools without returning to a charger.
Configuration is settled per order: charger input for the destination market, quantity of batteries per kit, blade specification, carton labelling and the language of the operating documentation. Mixed consignments with our XJ.908 21V brushless angle grinder and other 21V tools are packed so that one battery platform serves the whole delivery.
Safety and Overload Protection
The anti-kickback guard closes over the blade when the saw is lifted, and the anti-slip handle keeps grip during a long run of cuts. Overload protection cuts the motor when the blade is forced, which protects both the electronics and the operator.
- Two-handed grip on every cut, with the workpiece clamped or supported, not held by hand.
- Eye and hearing protection, and a dust mask when cutting MDF or chipboard.
- Remove the battery before any blade change, guard check or cleaning.
- If the overload trips repeatedly, the blade or feed rate is wrong for the material, not the tool.
Factory Control, Acceptance and Support
We manufacture in Hangzhou in a 10,000m² facility and hold National High-tech Enterprise status with a patent portfolio covering our pipe equipment and tooling. Finished-product rate across our production is stated at 99.9%, and our technical team provides product training and demonstrations for partner teams, with spare parts and maintenance support available for the tools we supply.
On receipt, a short acceptance routine catches transit issues before the saw goes to site: spin the blade by hand and check for runout, confirm the guard returns freely, verify the laser line against a straight edge, lock and release the bevel through its full range, then charge and discharge one battery through a test cut.
First Use, Blade Changes and Maintenance
- Blade changes use the supplied hex wrench; keep the flange faces clean and seat the blade fully on the arbor.
- Clear dust from the guard and base plate after each shift; packed dust stiffens the guard return.
- The brushless motor has no brushes to replace, so routine work is limited to blade condition, guard movement and battery care.
- Store batteries at partial charge in a dry area, away from metal objects and direct heat.
Information We Use to Configure Your Order
A workable proposal for the XJ.853 21V Lithium-Ion High-Magnetic Brushless Circular Saw — 140mm Blade with Laser Guide Line comes from a short set of project facts. Send these and we will return a configuration, packing scope and delivery plan.
- Materials and thicknesses to be cut, and the finish standard required on visible edges.
- Approximate cut volume per shift and the number of operators using the tool.
- Battery platform already in use on site, and whether backpack packs are needed.
- Blade specification, spare blade quantity and whether kits or bare tools are preferred.
- Destination market, charger input, carton labelling and documentation language.
Frequently Asked Questions
What is the maximum cutting depth of the XJ.853?
45mm at 90° and 30mm at 45°. That covers 38mm battens, standard 40mm worktop and two stacked 18mm panels; deeper sections need a larger saw or a two-pass cut.
Can this circular saw cut steel pipe or metal profile?
No. The XJ.853 is specified for wood, wood-based panels and plastics. Metal pipe and profile belong on our variable frequency cold cutting saw, which produces a spark-free, burr-free cut suitable for fabrication.
What battery does the saw use, and what is in the standard kit?
It runs on our 21V DC lithium-ion platform. The standard kit contains the saw, one blade, a hex wrench, a battery, a charger and a portable carry bag; extra batteries and backpack packs are added at order stage.
How accurate is the laser guide line?
The laser projects the blade path onto the workpiece so the operator can align the saw before entry. We recommend checking the line against a straight edge on the first cut of a shift, since a bumped housing can shift the projection.
Can we order the saw configured for our market and mixed with other tools?
Yes. Charger input, battery quantity, blade specification, carton labelling and documentation language are confirmed per order, and consignments can combine the saw with our other 21V cordless tools. Order details are handled through our XJ.853 21V Lithium-Ion High-Magnetic Brushless Circular Saw — 140mm Blade with Laser Guide Line manufacturer page and the quotation that follows it.
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