Bernardo Surface Grinder BSG 50100 PLC

Bernardo BSG 50100 PLC Surface Grinder with ES-12 H 2-axis Digital Readout

The Bernardo BSG 50100 PLC Surface Grinder with ES-12 H 2-axis digital readout is designed for industrial applications where precision, rigidity, and reliability are essential. The table with hardened and ground guideways, combined with Durcit-B coated counter-guideways, ensures smooth movement and long service life. Longitudinal and transversal movements occur via a combined V-flat guide, while the Siemens PLC control allows for programming automated grinding cycles with return to the initial position. The massive structure with stress-relieved base and thick reinforcements guarantees stability even under high loads of up to 700 kg. The 350 mm grinding wheel, combined with the powerful 7.5 kW motor and state-of-the-art hydraulic system, enables fast and precise grinding. A complete solution for workshops and companies requiring high-level professional grinding machines.

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Key features:
Table with hardened and ground guideways, Durcit-B coated counter-guideways
Longitudinal and transversal movements on combined V-flat guide
High-performance hydraulic system for smooth and consistent feeds
Siemens PLC control with touchscreen for automated cycles
ES-12 H 2-axis digital readout included
Working capacity up to 700 kg with 500 x 1000 mm magnetic chuck
Ø 350 mm grinding wheel with spindle on preloaded axial and radial bearings
Massive structure with stress-relieved base and thick reinforcements for high stability

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Logistics

Bernardo shipping: 5–9 working days (7 days to the South). Original spare parts available with 3–5 working days shipping. Customer support available in Italian.

Technical specifications

Specification	Value
Brand	Bernardo
Model	BSG 50100 PLC
Work table	500 x 1100 mm
T-slots (No. / width)	3 / 18 mm
Magnetic chuck	500 x 1000 mm
Max. longitudinal travel	1150 mm
Max. cross travel	560 mm
Max. distance grinding wheel / table	600 mm
Max. workpiece weight (with magnetic chuck)	700 kg
Grinding wheel size	350 x 50 x 127 mm
Hydraulic table speed	5 – 25 m/min
Automatic cross adjustment	0.5 – 30 mm/stroke
Rapid cross feed	0 – 600 mm/min
Automatic vertical adjustment	0.005 – 0.04 mm
Rapid vertical feed	0 – 300 mm/min
Spindle motor	7.5 kW
Spindle speed	1440 rpm
Hydraulic pump motor	3.0 kW
Total power input	13.2 kW
Machine dimensions (L x W x H)	3880 x 2150 x 2420 mm
Weight	5500 kg

Standard equipment

ES-12 H 2-axis digital readout
Siemens SMART panel with touchscreen
Electronic handwheel
Grinding wheel and flange
LED work light
500 x 1000 mm magnetic chuck
Balancing stand and balancing arbor
Protective covers
Parallel dresser and demagnetizing device
Coolant system and diamond dressing device
Machine feet
Central lubrication
Hydraulic oil cooler
Service tools

Warranty terms and support procedures are available on the dedicated Krollit page.

View Krollit warranty terms

Frequently Asked Questions

What is the achievable grinding precision with the Bernardo BSG 5 surface grinder?

Bernardo surface grinders achieve dimensional tolerances of IT5–IT6 and surface roughness Ra 0.4–0.8 µm under optimal conditions. 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 5 surface grinder model mean?

The PLC suffix indicates that the grinder is equipped with a programmable PLC control—it allows for setting automatic grinding cycles (number of passes, depth per pass, feed rate) without manual intervention during the cycle. Compared to the manual version, it reduces cycle times and produces more repeatable results for identical part series.

Which grinding wheel should be used for steel vs. cast iron vs. aluminum?

Steel: aluminum oxide (Al₂O₃) grinding wheel A46K–A60K. Cast iron: silicon carbide (SiC) grinding wheel C46K–C60K. Aluminum: silicon carbide grinding wheel C46J–C60J with ample lubrication. Do not mix different materials on the same grinding wheel—metal residues contaminate the ground surface.

Does the Bernardo BSG 5 surface grinder require integrated coolant?

BSG and FSM surface grinders 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 the appropriate type of coolant for the material being processed.

Are spare parts and grinding wheels available?

Original spare parts available with 3–5 working days shipping. Customer support available in Italian.