Bernardo Surface Grinder BSG 4080 PLC
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Description
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Description
Bernardo BSG 4080 PLC Surface Grinding Machine
The Bernardo BSG 4080 PLC is a high-end surface grinding machine (tangential grinder) designed for processing large flat surfaces with high precision and rigidity. Equipped with a Siemens PLC control with touchscreen, it allows for automatic programming of grinding cycles with digital setting of feeds, strokes, and automatic lift at the end of the program. The 405 x 815 mm table, with a longitudinal travel of up to 900 mm and a transverse travel of 450 mm, can support workpieces up to 500 kg thanks to the 400 x 800 mm magnetic chuck. The servo-assisted vertical feed allows for digital adjustments from 0.005 to 0.05 mm, while the Ø 350 mm grinding wheel with a 4.0 kW motor ensures consistent performance. With a weight of 3400 kg and a massive cast iron structure, it ensures stability even under extreme loads. A perfect machine for machine shops and precision departments that demand maximum productivity and reliability.
Main features:
CNC surface grinding machine with Siemens PLC touch control
Table 405 x 815 mm, longitudinal travel 900 mm, transverse travel 450 mm
Capacity up to 500 kg with 400 x 800 mm magnetic chuck
Automatic servo-assisted vertical feed (0.005 – 0.05 mm)
Grinding wheel Ø 350 mm, 4.0 kW motor, 1450 rpm
Advanced hydraulic system with separate unit and heat exchanger
Massive cast iron structure, weight 3400 kg for heavy-duty work
Complete with 2-axis DRO, demagnetization device, cooling, and centralized lubrication
Technical specifications
| Specification | Value |
|---|---|
| Brand | Bernardo |
| Model | BSG 4080 PLC |
| Table dimensions | 405 x 815 mm |
| Number / width of T-slots | 3 / 14 mm |
| Magnetic chuck | 400 x 800 mm |
| Max. longitudinal travel | 900 mm |
| Max. transverse travel | 450 mm |
| Max. distance spindle / table | 580 mm |
| Max. workpiece weight (with chuck) | 500 kg |
| Grinding wheel | Ø 350 x 40 x 127 mm |
| Hydraulic table speed | 5 – 25 m/min |
| Automatic transverse feed | 0.5 – 8 mm/stroke |
| Rapid transverse feed | 990 mm/min |
| Automatic vertical feed | 0.005 – 0.05 mm |
| Rapid vertical feed | 480 mm/min |
| Grinding wheel motor power | 4.0 kW |
| Spindle speed | 1450 rpm |
| Hydraulic pump power | 2.2 kW |
| Vertical feed power | 0.5 kW |
| Machine dimensions (L x W x H) | 2650 x 2200 x 1900 mm |
| Weight | approx. 3400 kg |
Standard equipment
2-axis DRO ES-12 H with LCD
Siemens SMART-panel IE V3 with touchscreen
Electronic handwheel
Electric magnetic chuck 400 x 800 mm
Grinding wheel Ø 350 mm with flange
Support and balancing arbor
Parallel dresser
Diamond dressing tool
Coolant system
Centralized lubrication system
Machine feet
LED work light
Protective covers
Demagnetization device
Safety splash guards
Tool kit
Logistics
Bernardo shipping: 5–9 working days (7 days to the South). Original spare parts available with 3–5 working day shipping. Customer support available in Italian.
Frequently Asked Questions
What grinding precision can be achieved with the Bernardo BSG 4 surface grinding machine?
Bernardo surface grinding machines achieve dimensional tolerances of IT5–IT6 and roughness Ra 0.4–0.8 µm under optimal conditions. The actual precision depends on the condition of the grinding wheel (periodic dressing), the workpiece material, the coolant, and the operator's experience.
What does the "PLC" suffix in the Bernardo BSG 4 surface grinding machine model mean?
The PLC suffix indicates that the grinding machine is equipped with a programmable PLC control – it allows for setting automatic grinding cycles (number of passes, depth per pass, feed) without manual intervention during the cycle. Compared to the manual version, it reduces cycle times and produces more repeatable results on batches of identical parts.
Which abrasive wheel to use for steel vs cast iron vs aluminum?
Steel: aluminum oxide (Al₂O₃) A46K–A60K wheel. Cast iron: silicon carbide (SiC) C46K–C60K wheel. Aluminum: silicon carbide C46J–C60J wheel with abundant lubrication. Do not mix different materials on the same wheel – metal residues contaminate the ground surface.
Does the Bernardo BSG 4 surface grinding machine require integrated coolant?
The BSG and FSM surface grinding machines are equipped with an integrated cooling system – essential for precision grinding of hardened steel to prevent surface burns that alter the material's structure. Always use appropriate coolant for the material being processed.
Are spare parts and grinding wheels available?
Original spare parts available with 3–5 working day shipping. Customer support available in Italian.
