Bernardo UGM 300 Universal Grinding Machine – 400V
Bernardo UGM 300 Universal Grinding Machine – 400V is backordered and will ship as soon as it is back in stock.
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Description
The Bernardo UGM 300 universal grinding machine sharpens tools up to Ø 380 mm and 300 mm length, circular saw blades Ø 90–630 mm, with a 24-position indexing head, Ø 125 mm diamond grinding wheel, 3,500 rpm spindle, 370 W three-phase 400V motor, integrated coolant pump. Weight approx. 270 kg. Distributed in Italy by Krollit as an official Bernardo distributor since 2007.
- Max. tool diameter: Ø 380 mm
- Max. grinding length: 300 mm
- Sharpenable circular saw blades: Ø 90 – 630 mm
- Indexing head: 24 positions
- Diamond grinding wheel: Ø 125 × 10 / 8 × 32 mm
- Grinding wheel spindle speed: 3,500 rpm
- Grinding wheel motor: 370 W – 400V three-phase
- Coolant pump: 40 W integrated
- Weight: approx. 270 kg
Who uses the UGM 300 and what for
The Bernardo UGM 300 is a universal bench grinder for mechanical workshops and tool services: unlike dedicated grinders (DG for drills, SBS for circular saw blades, HMS for planer knives), the UGM 300 sharpens a wide range of rotary tools — milling cutters, inserts, disc tools, circular saw blades up to Ø 630 mm — with the 24-position indexing head that positions each tooth precisely and repeatedly. The integrated coolant pump is essential for HM tools that quickly overheat during sharpening without cooling. At 270 kg and three-phase 400V, it is a stationary workshop machine for workshops with high consumption of various tools.
Who is the Bernardo UGM 300 for
| Profile | Compatibility | Reason |
|---|---|---|
| Hobbyist | Not suitable | Professional machine weighing 270 kg with three-phase 400V. |
| Mechanical workshop / tool service | Ideal | Universal sharpening of milling cutters, circular saw blades, and special tools in a single machine with precise indexing head and integrated coolant. |
| Industrial production | Adequate | For high volumes of identical tools, consider specialized automatic CNC grinders. |
Not suitable for: workshops without three-phase 400V; hobby use; those who sharpen only one type of tool (dedicated DG, SBS, HMS grinders are more economical and simpler).
Technical specifications
| Specification | Value |
|---|---|
| Max. tool diameter | Ø 380 mm |
| Max. grinding length | 300 mm |
| Circular saw blades (range) | Ø 90 – 630 mm |
| Indexing head | 24 positions |
| Diamond grinding wheel (Ø × thk. / bore) | 125 × 10 / 8 × 32 mm |
| Spindle head height adjustment | 225 mm |
| Radial relief angle | +50° … −50° |
| Spindle head tilt | 50° left / 50° right |
| Side relief angle | −20° … +20° |
| Longitudinal table travel | 300 mm |
| Cross table travel | 130 mm |
| Handwheel reading | 0.05 mm |
| Grinding wheel spindle speed | 3,500 rpm |
| Grinding wheel motor power | 370 W |
| Coolant pump power | 40 W |
| Power supply | 400V – three-phase |
| Dimensions (L × W × H) | 1,050 × 830 × 1,450 mm |
| Weight | approx. 270 kg |
Compliance and safety
| Specification | Value |
|---|---|
| Marking | CE |
| Directive | Machinery 2006/42/CE |
Logistics
Bernardo shipping: 5–9 working days (7 days for Southern Italy). Original spare parts available with 3–5 working days shipping. Customer support in Italian available.
Frequently Asked Questions
What tools can the UGM 300 sharpen besides circular saw blades?
The UGM 300 can sharpen: disc milling cutters, peripheral milling cutters, turning tools with HM inserts, special drills, profile tools. The 24-position indexing head ensures precise positioning of each tooth for all multi-point tools. Contact Krollit to verify compatibility with specific tools.
What is the 24-position indexing head?
The indexing head is a device that rotates the tool by a precise angle between one tooth and the next, ensuring that each tooth is sharpened identically. The 24 positions cover tools with 2, 3, 4, 6, 8, 12, and 24 teeth (any divisor of 24). For tools with a different number of teeth (e.g., 5, 7, 9), an additional indexing head is required.
Is the coolant pump essential for HM tools?
Yes. Tungsten carbide (HM) tools are sensitive to heat during sharpening: insufficient cooling causes micro-cracks in the carbide that drastically reduce tool life. The integrated 40 W pump ensures a continuous flow of coolant throughout the sharpening process.
Are spare parts and grinding wheels available?
Yes. Replacement diamond grinding wheels and original Bernardo parts for the UGM 300 are available with 3–5 working days shipping.
How much space is needed in the workshop?
Overall dimensions: 1,050 × 830 × 1,450 mm. With 270 kg, it requires adequate flooring for delivery. For operation around the machine, a clear space of about 1.5 m on all sides is needed.
