BRETON Contourbreton NC 260 K23 stone machining center

BRETON Contourbreton NC 260 K23 stone machining center was built in 2010 in Italy by Breton S.p.A.. The machine is used for the efficient machining of natural stone slabs and blocks with a maximum weight of 4000 kg. It enables a number of advanced operations to be performed, such as milling, profiling, bevelling and hole drilling. All these machining processes are performed fully automatically, while maintaining the high repeatability and quality of the manufactured parts. The reliable spindle, operating at a maximum speed of 9000 rpm, moves in three numerically-controlled axes. This enables precise positioning of the tool relative to the workpiece during the machining. All axes, driven by powerful motors, achieve a high feed rate and dynamics, which in turn translates into increased production efficiency. All of this makes the offered Contourbreton NC 260 K23 CNC machining center for marble and granite an excellent choice for the production of kitchen worktops, stairs, window sills and other elements made of marble and granite. The total weight of the machine is 8000 kg.

Technical specifications of the BRETON Contourbreton NC 260 K23 stone CNC milling machine

General data

• machinable materials: marble, granite, concrete, other natural stones
• feed in the X/Y/Z axis: 3500/2300/260 mm
• maximum feed rate in the X/Y/Z axis: 60/40/20 m/min
• work table dimensions (L x W): 3515 x 2250 mm
• maximum workpiece weight: 4000 kg
• spindle rotational speed: 0-9000 rpm
• spindle drive power (S1): 14 kW
• laser class II
• X/Y/Z axis drive power: 5/2,5/1,7 kW
• water system pressure: 3 bar
• water consumption: 60 l/min
• pneumatic system pressure: 6 bar
• air consumption: 15 Nl/min
• sound pressure level: 96 dB(A)
• dimensions (L x W x H): 5950 x 3640 x 2800 mm
• weight of the BRETON Contourbreton NC260 K23 machine: 8000 kg

Tool magazine

• number of tools: 18+18
• maximum tool diameter: 140 mm
• maximum tool length: 200 mm
• maximum tool weight: 15 kg
• maximum tool weight at 2000 rpm: 15 kg
• maximum tool weight at 9000 rpm: 6 kg
• tool holder: HSK-B80
• tool balancing: dynamic G6.3 (ISO 1940/1)

Machining capacity of the BRETON stone milling machine

Cutting with 250 mm diameter disc (marble)

• spindle rotational speed: 2800 rpm
• peripheral speed of the cutting disc: 50 m/s
• working feed rate (material thickness 2 cm): 2500 mm/min
• working feed rate (material thickness 3 cm): 1600 mm/min
• working feed rate (material thickness 4 cm): 1250 mm/min
• working feed rate (material thickness 5 cm): 1000 mm/min

Cutting with 250 mm diameter disc (granite)

• spindle rotational speed: 1350 rpm
• peripheral speed of the cutting disc: 30 m/s
• working feed rate (material thickness 2 cm): 1250 mm/min
• working feed rate (material thickness 3 cm): 800 mm/min
• working feed rate (material thickness 4 cm): 600 mm/min
• working feed rate (material thickness 5 cm): 500 mm/min

Cutting with 190 mm diameter convex disc (marble)

• spindle rotational speed: 3200 rpm
• peripheral speed of the cutting disc: 38 m/s
• working feed rate (material thickness 2 cm): 2000 mm/min
• working feed rate (material thickness 3 cm): 1300 mm/min
• working feed rate (material thickness 4 cm): 1000 mm/min

Cutting with 190 mm diameter convex disc (granite)

• spindle rotational speed: 2600 rpm
• peripheral speed of the cutting disc: 30 m/s
• working feed rate (material thickness 2 cm): 1000 mm/min
• working feed rate (material thickness 3 cm): 650 mm/min
• working feed rate (material thickness 4 cm): 500 mm/min

Hole drilling

• hole diameter: 240 mm, 260 mm, 280 mm, 300 mm, 320 mm, 340 mm, 360 mm, 380 mm, 400 mm, 460 mm
• hole tolerance: 0-1 mm

(The photos in the offer are for reference only and are only a visualisation of the machine. The photos have been generated automatically.)