CNC Granite Cutting Machine
CNC granite cutting machine solutions centered on machining
Granite is a relentless stone. With a Mohs hardness of 6-7 and a high quartz content, thick slabs can weigh over 200 kg/m², making it a nightmare for machines designed for softer stones. A saw blade that can easily cut marble will jam, veer off course, and even chip when dealing with dense black granite. Most bridge cutters suffer from a gap between being able to cut and being able to cut quickly and cleanly when handling non-linear rectangular orders.
The BHKNC 650J overcomes this limitation by mounting a 26.4 kW diamond cutter and a 37 kW abrasive waterjet cutter on the same five-axis CNC worktable. A granite slab can be processed from raw stone to finished countertops, sink openings, and 45° waterfall joints without ever leaving the worktable.
The BCTC BHKNC 650J is a five axis CNC sawing and waterjet integrated machine developed specifically to address this processing need, simplifying and maximizing efficiency.
It integrates a diamond saw blade and a high pressure abrasive waterjet into the same processing platform. It can select the appropriate tool based on different cutting geometries, completing more granite processing tasks within a single CNC machining cycle.
Why do granite processors need more than just straight cuts?
Straight cutting is usually only the first step in processing granite slabs; a kitchen countertop may require:
Sheet material cutting
1
>>
Outer contour cutting
2
>>
Sink hole cutting
3
>>
Faucet hole cutting
4
>>
Inner corner cutting
5
>>
45° splicing
6
If these processes are performed by different equipment, the sheet metal needs to be transferred back and forth between different machines. Each time it is repositioned, the reference points and dimensions need to be reconfirmed.
The granite CNC machine uses a unified CNC machining platform, allowing these machining processes to be more centralized.
The saw blade provides efficient cutting, while the waterjet offers geometric flexibility.
Diamond Saw Cutting
Suitable for high efficiency operations:
- Long distance straight cutting
- Large slab cutting
- 45° cutting
- Tabletop perimeter cutting
Waterjet cutting
Especially suitable for:
- Grooving
- Curved contours
- Narrow interior angles
- Irregular openings
- Complex stone contours
Five axis control for complex granite geometries
|
CNC Axis |
Function |
|
X Axis |
Longitudinal movement |
|
Y Axis |
Cross movement |
|
Z Axis |
Cutting depth |
|
C Axis |
0°–360° rotation |
|
A Axis |
Oblique shear motion |
The saw blade's A axis has a maximum tilt angle of 90°, and the waterjet cutting head supports tilts from 0° to 60°.
This structure is highly practical for custom granite processing.
- When creating waterfall-edge countertops, different slabs need to be joined at a 45° angle.
- When processing architectural stone, different beveling directions and irregular contours may be required.
- With the help of a five axis control system, the tool angle can be automatically adjusted according to the CNC machining program, eliminating the need for workers to repeatedly flip or move the slabs to adjust the processing angle.
One Slab, Two Cutting Technologies
The core of the BHKNC 650J isn't simply putting two machines together, but rather allowing two cutting technologies to share the same CNC machining platform.
Rapid Material Removal
A 26.4 kW saw blade motor paired with a 400–650 mm diamond saw blade easily cuts large slabs of granite, marble, and other high hardness stones.
Complex Contour Machining
A 37 kW abrasive waterjet system, with a maximum operating water pressure of up to 60,000 psi, easily handles curves and complex internal contours that are difficult to machine with conventional saw blades.
From CAD drawings to finished granite components
The BHKNC 650J employs digital machining methods, combined with the ESA five axis CNC system and Pegasus CAD/CAM software. It is suitable for stone processing companies with high customization requirements and frequent changes in order dimensions. A typical processing flow is simplified as follows:
01
Design
02
Programming
03
Sawing
04
Waterjet Cutting
05
Five Axis Machining
06
Finished Components
Large working area to meet professional production needs
BHKNC 650J features a 4200 × 2200 mm worktable
Features:
X axis travel: 3600 mm
Y axis travel: 2200 mm
Z axis travel: 500 mm
Maximum cutting thickness: 200 mm
Blade diameter: 400–650 mm
Applications:
Kitchen countertops
Architectural stone
Decorative stone
Other large custom parts processing
Specification and applications
Applications of BHKNC 650J
- Granite Countertop Processing
- Architectural Granite
- Custom Stone Components
CNC Granite Cutting Machine Specification
| Name | Parameter |
| Saw blade diameter | 400-650 mm |
| Working platform | 4200 x 2200 mm |
| X / Y / Z stroke | 3600 / 2200 / 500 mm |
| Max cutting thickness | 200 mm |
| Saw blade motor power | 26.4 kw |
| Abrasive waterjet power | 37 kw |
| Maximum working water pressure | 60000 psi |
| Area of the site (L x W x H) | 6200 x 3900 x 3930 mm |
| Gross weight |
10500 kg |
What makes the BHKNC 650J different?
However, when orders start to include irregular shapes, complex internal angles, bevel cuts, water tank holes, and 45° splicing, the sawing equipment alone will get stuck. It's not that it can't cut, but that it can't cut well, can't cut fast, and has to be repaired after cutting.
Single CNC Platform
Sawing and waterjet cutting operate in the same coordinate system, ensuring consistent machining datum and eliminating the need for secondary positioning.
01
Two Cutting Techniques
Straight lines and bevel joints are machined by saw blades, while internal angles and irregular contours are machined by waterjet cutting, fully leveraging the advantages of each.
02
Five Axis Motion
Axis tilt angle 0-60°, C axis rotation angle 0-360°, allowing for machining of complex angles in a single clamping operation without flipping the sheet material.
03
Large Working Area
The 4200×2200mm worktable can fully accommodate European standard sheet material, enabling large format loading without cutting.
04
Digital Workflow
DXF files can be directly imported; the ESA Pegasus system automatically generates nesting and cutting paths, reducing manual programming and trial cuts.
05
CNC Granite Cutting Machine for Stone Processing Companies
If you are planning a new stone processing production line and wish to integrate bridge cutting and waterjet cutting onto the same CNC platform, please provide BCTC with the following information:
Stone type
Slab dimensions
DXF drawing
Target processing
Monthly output
BCTC will create a customized processing solution for your BHKNC 650J based on your needs !
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