Bernardo CK 400 x 750 CNC Lathe – Siemens 808D

Bernardo CK 400 x 750 CNC Lathe with Siemens 808D Advanced

The Bernardo CK 400 x 750 lathe is a compact and powerful CNC machine for precise and repeatable production. With a 400 mm swing over bed, 750 mm distance between centers, and a Ø 66 mm spindle bore (A2-6), it easily handles medium to large workpieces. The 210 mm X-axis and 750 mm Z-axis, with rapid traverses of 6/8 m/min, ensure short cycle times. The 8-station automatic tool turret (20×20 mm tool holders) and the Siemens 808D Advanced control guarantee intuitive programming, ±0.01 mm precision, and industrial reliability. Standard features include: Ø 200 mm hydraulic chuck with power unit, hydraulic tailstock, automatic lubrication, electronic handwheel, coolant system, and full enclosure. With a 5.5 kW motor and a continuously adjustable speed of 30–2500 rpm, it is the ideal choice for workshops, maintenance, and small-batch production.

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Key Specifications

Capacity: Swing over bed 400 mm, distance between centers 750 mm
Spindle bore Ø 66 mm, spindle nose A2-6
Spindle speed 30–2500 rpm (stepless)
Axis travel: X 210 mm / Z 750 mm
Rapid traverse: X 6 m/min / Z 8 m/min
8-station automatic turret, tools 20×20 mm
Siemens 808D Advanced with electronic handwheel
Positioning accuracy ±0.01 mm
Tailstock MT4 with quill Ø 55 mm, travel 140 mm (hydraulic adjustment)
Automatic axis lubrication and integrated coolant system
Rigid structure: bed width 330 mm, machine 1780 kg
5.5 kW motor, full enclosure and CE safety

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Technical table:

Specification	Value
Distance between centers	750 mm
Center height	200 mm
Swing over bed	400 mm
Swing over cross slide	240 mm
Bed width	330 mm
Spindle bore	Ø 66 mm
Spindle nose	A2-6
Spindle speed	30 – 2500 rpm (stepless)
X / Z axis travel	210 mm / 750 mm
Rapid traverse X / Z	6 / 8 m/min
Turret	8 stations
Tool section	20 × 20 mm
Positioning accuracy	± 0.01 mm
Tailstock quill diameter	55 mm
Tailstock quill travel	140 mm
Tailstock taper	MT4
Motor power	5.5 kW
Machine dimensions (L×W×H)	2850 × 1510 × 1950 mm
Weight	1780 kg

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Package contents:
Ø 200 mm 3-jaw hydraulic chuck with hydraulic power unit
8-station automatic tool turret + 3 tool holders
Hydraulic tailstock quill adjustment
Siemens 808D Advanced control
Coolant device and automatic axis lubrication
LED machine light
Rotating tailstock MT4
Electronic handwheel (MPG)
Full machine enclosure
Standard tool set and accessories

Logistics

Bernardo shipping: 5–9 working days (7 days for Southern Italy). Original spare parts available with 3–5 working day shipping. Customer support available in Italian.

Frequently asked questions

What is the Siemens 808D Advanced control and what does it allow?

The Siemens 808D Advanced is the CNC mounted on the CK 400 lathe. It allows for programming in ISO/DIN code (G-code) with graphic simulation of the tool path before execution, fixed cycles for turning, threading, and repeatable drilling, and management of up to 16 tools in memory. The ergonomic keyboard and color display make it accessible even to operators new to CNC.

Can an operator with experience only on manual lathes use the CK 400?

Yes, with a learning curve of 2–4 weeks. The Siemens 808D has an MDI (Manual Data Input) mode that performs single operations like a manual lathe, and conversational programming guides the operator in creating the program without having to write G-code from scratch. For those starting from scratch, the 16-hour Siemens Operate course is recommended.

What is the difference between CK 400 × 750 and versions with a different distance between centers?

The number after × indicates the distance between centers in mm — the maximum length of the workpiece that can be turned. CK 400 × 750: maximum length 750 mm. The swing over bed (400 mm) remains unchanged. The choice depends on the maximum length of shafts and bars to be machined in production.

Are spare parts, assistance, and training available?

Original spare parts available with 3–5 working day shipping. Siemens 808D CNC training available through authorized centers. Customer support available in Italian.

What foundation does the CK 400 require?

The CK 400 weighs 950–1,200 kg depending on the configuration. A standard industrial floor (15 cm reinforced concrete) is sufficient. No special foundation is required, but it should be leveled with adjusting screws — the flatness of the bed directly affects the taper of the turning.