In the CNC stone processing industry, many buyers often encounter 4+1, 4+2, and 4+3 model configurations for stone bridge saws. These specifications represent different upgraded functional modules based on the standard 4 axis bridge saw. Each configuration offers different processing capabilities, automation levels, and production efficiency, allowing stone factories to select suitable equipment according to their actual production needs. This article explains the differences and application scenarios of CNC stone cutting machine 4+1, 4+2, and 4+3 models in detail.
| Machine Config (Model) | Core Upgraded Modules | Key Functions | Best Target Scenarios |
| Standard 4-axis | Saw blade (X/Y/Z/A axes) | Straight cutting, 45° miter cutting, 360° rotation | Kitchen countertops, standard-size slabs, regular project orders |
| 4+1 axis | Independent high-speed milling spindle | Hole cutting, corner rounding, special-shaped carving, edge polishing | Shaped bar tops, under-mount/over-mount sink cutouts, whole-house customization |
| 4+2 axis | Dual vacuum suction-cup slab handling system | Automatic slab transfer, tight-nesting cutting, reduced waste | Large-format sintered stone slabs, production-line mass production, labor-saving & efficiency for large factories |
| 4+3 axis | Overhead HD vision camera | Automatic photo scanning, CAD-free programming, intelligent nesting | High-end stone fine-finishing, marble vein matching, premium turnkey custom fabrication |
Standard 4 Axis Bridge Saw
The basic 4 axis bridge saw adopts a heavy-duty gantry beam structure with excellent stability and rigidity. Equipped with a high-power cutting saw blade, the machine features X, Y, Z linear axes and an A rotation axis, allowing 360-degree blade rotation, 0-degree straight cutting, and 45-degree inclined cutting. Supported by servo motor drive or hydraulic drive systems, it is widely used for cutting, trimming, and chamfering marble, granite, quartz stone, sintered stone, and other common stone materials.
As a standard bridge saw machine, the 4-axis model focuses on stable and precise standard cutting. It is ideal for processing kitchen stone countertops, stone wall tiles, thin stone tiles, and engineering stone slabs, perfectly matching the production needs of small and medium-sized stone processing factories for regular stone cutting tasks.
4+1 Axis Bridge Saw (With Independent Milling Spindle)
The 4+1 axis bridge saw upgrades the standard 4-axis machine by adding an independent high-speed milling spindle. The original saw blade is responsible for cutting and trimming slabs, while the newly added milling spindle performs fine processing such as stone rounding, shape profiling, grooving, drilling, and edge polishing.
It realizes one-stop processing for customized bar stone countertops, special-shaped stone profiles, under-mount basins, and arc-shaped stone structures. The integrated cutting and milling process avoids repeated clamping, reduces processing errors, and improves finished product quality. For factories focusing on customized home decoration and special-shaped stone products, the 4+1 axis bridge saw provides powerful multi-functional processing capabilities with excellent cost performance.
4+2 Axis Bridge Saw (With Vacuum Suction Material Handling System)
Based on the full functions of the 4+1 model, the 4+2 axis bridge saw is equipped with dual vacuum suction cups, upgraded to a professional Bridge saw with vacuum lifter.
Traditional stone processing requires manual slab handling, flipping, and repositioning, which is time-consuming, labor-intensive, and easy to cause stone surface scratches and collisions. The vacuum suction system of the 4+2 model automatically completes slab moving, flipping, and position adjustment, minimizing manual operation. It supports continuous batch production, greatly improves production efficiency, reduces labor costs, and lowers stone material waste, making it perfect for mass production of stone countertops and large-size sintered stone processing.
4+3 Axis Bridge Saw (Top-Level Vision Camera Intelligent Model)
The 4+3 axis bridge saw is the top-tier fully automatic version. It integrates complete cutting, milling, and vacuum material handling functions, and is further equipped with a top-mounted high-definition vision camera system.
The vision system directly scans stone samples and irregular slab contours, automatically generating processing graphics and importing data into the CNC system. Manual CAD drawing creation is no longer required. Operators can easily adjust tool paths and shape editing on the on-board computer, greatly simplifying the programming process for complex special-shaped stones. It significantly shortens proofing and programming time, providing intelligent and efficient solutions for high-end customized stone production. It is the most advanced CNC stone cutting machine for high-grade stone fabrication.
Conclusion
The standard 4-axis model completes basic standard cutting; the 4+1 model adds milling functions for special-shaped processing; the 4+2 model realizes automatic slab handling for mass production; the 4+3 model achieves intelligent visual scanning and fast programming. Different configurations of bridge saw machine fully cover ordinary batch production and high-end customized stone processing. Contact our team to select the most cost-effective stone bridge saw according to your processing requirements.
