The Bernardo BDS 75-2 belt grinder is designed for grinding surfaces, contours, and profiles with a combined abrasive belt + abrasive disc configuration. It features a 75 × 1,180 mm abrasive belt, belt speed of 11 / 22 m/s (2 speeds), a Ø 150 mm abrasive disc, integrated Ø 50 mm dust extraction, a 1.5 kW (S1) and 2.5 kW (S6 40%) 400V three-phase motor. Machine dimensions are 580 × 680 × 765, weight 69 kg. Suitable for mechanical workshops, metal fabrication, blacksmiths, woodworking shops, and metalworking laboratories. Distributed in Italy by Krollit as an official Bernardo distributor since 2007.
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Abrasive belt: 75 × 1,180 mm
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Belt speed: 11 / 22 m/s (2 speeds)
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Abrasive disc: Ø 150 mm
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Dust extraction: Ø 50 mm
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Motor (S1 / S6): 1.5 kW / 2.5 kW
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Voltage: 400V three-phase
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Weight: 69 kg
Who uses the BDS 75-2 and for what
The Bernardo BDS 75-2 is the 2-speed version of the BDS 75 with identical mechanical characteristics (75 × 1,180 mm belt + Ø 150 mm disc) but with a distinctive feature: dual belt speed (11 / 22 m/s) selectable via a switch. The low speed (11 m/s) is suitable for delicate work (thin stainless steel, aluminum, thin pieces where excessive heat causes deformation) or heat-sensitive materials; the high speed (22 m/s) is suitable for rapid roughing on standard steels and intensive deburring operations. It has a more powerful motor than the BDS 75 (1.5/1.8 kW S1 and 2.1/2.5 kW S6 vs 1.1 kW for the BDS 75) to handle the higher speed without fatigue. In Krollit customers' workshops, the BDS 75-2 is chosen by workshops with a variety of tasks (different steels, aluminum, stainless steel), professional blacksmiths, and mixed workshops that alternate between rapid roughing and delicate finishing.
Its place in the range
The Bernardo belt grinder range is organized into 4 models by application: BDS 75 (combined belt 75 + disc 150, 1 speed) and BDS 75-2 (same configuration, 2 speeds) for general workshops with mixed operations; BS 100 × 1220 S-2 (long belt only 100 × 1,220, 2 speeds, base) for metal fabrication with long welds to be finished; KBR 100 × 2000 Duo (belt 100 × 2,000 + device for tubes Ø 20-76 mm) for workshops specializing in tubular fabrication.
The BDS family is the basis of the range: combined belt + disc configuration for general-purpose use. The difference between BDS 75 (1 speed) and BDS 75-2 (2 speeds): the BDS 75 costs less, is sized for standard use on mild steels; the BDS 75-2 is sized for workshops with a variety of materials (mild steels, stainless steel, aluminum) that require different speeds. For workshops specializing in long welds, the BS 100 × 1220 S-2 is correctly sized; for workshops specializing in tubes and profiles, the KBR 100 × 2000 Duo is the correct choice.
Logistics and Krollit support
Bernardo shipping in 5-9 working days (7 days in the South). With a weight of 69 kg, it requires two people for unloading and handling. Dimensions 580 × 680 × 765: check access to the workshop. Original Bernardo abrasive belts, abrasive discs, and spare accessories are available from stock with shipping in 3-5 working days. Customer support available in Italian.
Who the BDS 75-2 is for
| Profile |
Compatibility |
Reason |
| Advanced metal hobbyist |
Adequate |
Combined belt + disc configuration for versatile use in a home workshop. 400V three-phase voltage requires an industrial meter or adapters. |
| General mechanical workshop |
Recommended |
Suitable for deburring, finishing, grinding on mild steels and standard workshop materials. The dual speed allows adaptation to different materials (stainless steel, aluminum). |
| Blacksmith / light fabrication |
Recommended |
Tilting tables (0-90° for belt, 0-45° for disc) to position the workpiece at the optimal angle. Ø 50 mm extraction for connection to a centralized system. |
Not suitable for: deburring long welds over 800 mm (the BS 100 × 1220 S-2 with a long belt is the correct choice); working on tubes and profiles (the KBR 100 × 2000 Duo with a dedicated device is the specialized choice); 230V single-phase power supply (all Bernardo grinders require industrial 400V three-phase); use in dusty environments without connected extraction (metallic abrasive dusts are dangerous to the operator's health).
Abrasives
| Specification |
Value |
| Abrasive belt |
75 × 1,180 mm |
| Belt speed |
11 / 22 m/s (2 speeds) |
| Abrasive disc |
Ø 150 mm |
Table tilt
| Specification |
Value |
| Belt table tilt |
0° - 90° |
| Disc table tilt |
0° - 45° |
Extraction
| Specification |
Value |
| Extraction diameter |
Ø 50 mm |
Motor and power supply
| Specification |
Value |
| Motor power S1 100% |
1.5 kW |
| Motor power S6 40% |
2.5 kW |
| Voltage |
400V three-phase / 50 Hz |
Dimensions and weight
| Specification |
Value |
| Machine dimensions (L × D × H) |
580 × 680 × 765 mm |
| Weight |
69 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/CE |
Standard equipment
- Bernardo BDS 75-2 belt grinder
- Grinding belt grit 80
- Abrasive disc Ø 150 mm grit 80
- Grinding table and support
- Graphite coating for belt smooth running
- Ø 50 mm extraction connection
- 2-speed switch
- Spark protection
- User manual in Italian
Frequently asked questions
Why 400V three-phase and not 230V single-phase?
The grinder's motor (1.1-3.3 kW, depending on the model) requires power that a civil 230V single-phase line cannot provide stably. Industrial 400V three-phase is mandatory for professional use.
For workshops without an industrial 400V three-phase line, it is necessary to request connection from the electricity provider (typical cost €500-€2,000) or use a single-phase to three-phase converter (cost €200-€800, suitable only for occasional use due to limited duration). For workshops with expected continuous use, a dedicated industrial three-phase meter is recommended. Krollit does not sell grinders with single-phase motors: the required power does not allow it.
How to choose the abrasive belt grit?
Low grits (40-60) for aggressive roughing (fast material removal, deburring of rough pieces); medium grits (80-120) for standard workshop finishing; high grits (180-400) for fine pre-polishing finishing. Changing grit requires replacing the abrasive belt or disc.
Abrasive belts are consumables: typical lifespan 2-10 hours of actual work depending on grit and material. For professional use, it is recommended to keep a stock of belts of various grits. Original Bernardo abrasive belts (grit 36, 60, 80, 120, 180, 240) available from stock with shipping in 3-5 working days.
What is the graphite coating for?
The graphite coating on the front surface of the belt (the area where the workpiece comes into contact with the belt) significantly reduces friction between the belt and the support, lowering the working temperature and extending the life of the abrasive belt (typically +30-50% compared to belts without coating).
The graphite coating is a design feature on professional Bernardo grinders: it also reduces noise and heat generation on the workpiece, a crucial characteristic for working with stainless steel where excessive heat causes difficult-to-remove overheating stains. For intensive professional use, the coating is a consumable component: replaceable by an authorized Bernardo service center.
Is the machine safe for use by unskilled personnel?
The grinder is an industrial machine that requires basic safety training: respect for guards, use of PPE (glasses, gloves, dust masks), emergency procedures. The machine has standard guards (belt cover, workpiece support, safety switch) but use by untrained personnel carries a risk of serious injury.
For professional environments, staff training is mandatory according to occupational safety regulations (Legislative Decree 81/2008). For vocational schools and educational workshops, the presence of an experienced operator is recommended during use by students. The machine is CE marked in accordance with Machinery Directive 2006/42/CE.
How much noise does it generate during operation?
The typical sound level of belt grinders is 80-90 dB during operation under load. For prolonged use in enclosed spaces, the use of noise-canceling headphones (PPE compliant with EN 352) is mandatory.
The sound level varies based on: belt speed (high speeds generate more noise), workpiece material (steel makes more noise than wood), condition of the abrasive belt (worn belts vibrate and make more noise). For shared environments, positioning the machine in a dedicated room or with acoustic barriers is recommended. For professional workshops, noise risk assessment according to Legislative Decree 81/2008 is mandatory.
