The Bernardo UWF 80 E Vario universal milling machine offers ISO 40 vertical and horizontal spindles, continuously variable vertical speed 75-600/250-2,000 rpm with Delta-Frequency inverter, 9-stage horizontal speed 60-1,350 rpm, 1,000×240 mm table tiltable ±45° with 14 mm T-slots, ±90° swiveling head, travels 590/175/320 mm, automatic X and Y feeds with rapid traverse, 2.2 kW vertical motor + 1.5 kW horizontal motor, 1,010 kg cast iron structure. ES-12 H 3-axis DRO included. Manufactured in Austria, distributed in Italy by Krollit as official Bernardo distributor since 2007.
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Vertical spindle: ISO 40 with variable speed 75-600 / 250-2,000 rpm
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Horizontal spindle: ISO 40, 9 stages: 60 – 1,350 rpm
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Inverter: Delta-Frequency for continuous vertical spindle speed regulation
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Table: 1,000 × 240 mm tiltable ±45°
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Vertical motor: 2.2 kW (vs 0.85/1.5 kW of the basic UWF 80 E)
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3-axis DRO: ES-12 H included
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Weight: 1,010 kg
Who uses the UWF 80 E Vario and for what
The Bernardo UWF 80 E Vario is the professional superior version of the UWF 80 E, distinguished by its variable speed vertical spindle (Delta-Frequency inverter) and higher motor power (2.2 kW vs 0.85/1.5 kW). The inverter allows continuous adjustment of the vertical speed between 75-600 rpm (low range) and 250-2,000 rpm (high range): the advantage compared to the 8 staged speeds of the basic UWF 80 E is the ability to find the optimal speed for each tool-material combination. On hardened steels, the optimal speed may fall between two predefined stages: with an inverter, the exact correct value can be set. Optimal torque in all working conditions is a characteristic of the Delta-Frequency inverter, which maintains torque even at low speeds (a critical situation for motors without an inverter). The basic mechanical characteristics (table, travels, dual spindle, ES-12 H DRO included) are identical to the UWF 80 E. In Krollit customer workshops, it is chosen by mechanical workshops with precision requirements, laboratories working with different materials at variable optimal speeds, and prototype production requiring optimization of cutting parameters.
Its place in the Bernardo range
The UWF 80 E Vario is the 'Vario' version (with inverter) of the UWF 80 E. Key difference UWF 80 E vs UWF 80 E Vario: same mechanical machine, but the vertical spindle has a Delta-Frequency inverter for continuous speed (vs 8 stages). Superior vertical motor (2.2 vs 0.85/1.5 kW) to correctly manage the extended speed range. For workshops working with standard materials with tools suitable for predefined speeds, the basic UWF 80 E is correctly dimensioned with a lower cost. For workshops that alternate different materials (steel, aluminum, plastic, special alloys) and seek optimal speed for each, the UWF 80 E Vario repays the difference. The difference is similar to that between entry-level milling machines and CNC milling machines: the principle of optimizing cutting parameters. Above it in the family: UWF 90 V (1,270×280 mm table, 2.2+2.2 kW motors), UWF 90-1270, UWF 95 N (mid-range top), UWF 110 (360° universal head), UWF 150 (top of the range with ISO 50).
Krollit logistics and support
Bernardo shipping in 5-9 business days (7 days to the South). At 1,010 kg, it requires a crane or forklift of adequate capacity. Dimensions 1,600 × 1,500 × 2,100 mm. ISO 40 adapters, milling cutters, accessories, and original Bernardo spare parts available from stock with 3-5 business days shipping. Customer support available in Italian.
Who the UWF 80 E Vario is for
| Profile |
Compatibility |
Reason |
| Passionate hobbyist |
Not suitable |
Professional industrial machine. Exclusively professional application. |
| Mechanical workshop with variable materials |
Recommended |
Delta-Frequency inverter for continuous speed: optimizes cutting parameters for every material (steel, aluminum, alloys). 2.2 kW vertical motor manages stable torque at all speeds. |
| Prototyping laboratory / precision production |
Recommended |
Continuous speed allows fine optimization of cutting parameters for high-quality finishes. The basic UWF 80 E with 8 stages may require compromises on parameters. |
Not suitable for: workshops with standard processing on single materials (the basic UWF 80 E with 8 stages is correctly dimensioned with a lower cost); workshops without a 400V three-phase line; large parts beyond the 1,000×240 mm table (consider UWF 90 V or higher); high-volume series production (consider CNC).
Table
| Specification |
Value |
| Table dimensions |
1,000 × 240 mm |
| Table T-slots |
14 mm |
| Table tilt |
-45° / +45° |
Spindles
| Specification |
Value |
| Spindle taper |
ISO 40 (vertical and horizontal) |
| Vertical spindle speed (Vario) |
75-600 / 2,500-2,000 rpm continuously |
| Horizontal spindle speed |
(9) 60 – 1,350 rpm |
| Spindle stroke |
125 mm |
| Inverter |
Delta-Frequency |
Travels and capacity
| Specification |
Value |
| Travels (X / Y / Z) |
590 / 175 / 320 mm |
| Spindle – table distance |
55 – 375 mm |
| Spindle – column distance |
225 – 650 mm |
Swiveling head
| Specification |
Value |
| Head tilt |
-90° / +90° |
Feeds
| Specification |
Value |
| Longitudinal feeds (x) |
(8) 32 – 700 mm/min |
| Automatic feeds |
X and Y (with rapid traverse included) |
Motor and power supply
| Specification |
Value |
| Vertical motor power |
2.2 kW |
| Horizontal motor power |
1.5 kW |
| Power supply |
400V – 50Hz – three-phase |
DRO included
| Specification |
Value |
| Display |
ES-12 H 3-axis with LCD display |
Dimensions and weight
| Specification |
Value |
| Machine dimensions (L × W × H) |
1,600 × 1,500 × 2,100 mm |
| Weight |
1,010 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/EC |
Standard equipment
- Bernardo UWF 80 E Vario universal milling machine
- ES-12 H 3-axis digital display with LCD
- Drawbar M16
- Integrated LED lamp
- Coolant device
- Delta-Frequency inverter
- Automatic feed on X and Y axes
- ISO 40/MT 3 and ISO 40/B18 adapters
- Morse taper sleeve MT 3/2
- Long milling arbor ISO 40/27 mm
- Horizontal counter support
- Adjustable guards and horizontal milling cover
- Service tools
Frequently Asked Questions
What does 'Delta-Frequency inverter' mean?
It is an inverter (electronic frequency converter) of the Delta brand that supplies the motor with variable frequency, generating continuously adjustable rotational speed. It maintains optimal torque even at low speeds.
Asynchronous motors powered directly by the mains (fixed 50 Hz) generate reduced torque at low speeds. The inverter modulates the frequency, maintaining constant torque: at 5 Hz (1/10 of the nominal speed), the torque is still 90-100% of the nominal. This feature is crucial for heavy milling at low speeds, a typical situation for hard steels and large tools.
Are the 2 ranges 75-600 and 250-2,000 separate?
Yes, they are 2 separate speed ranges, selectable via mechanical gearbox. Within each range, the speed is continuously adjusted via the inverter.
The dual range is a design feature: a single 75-2,000 range would be possible but with compromises on torque at the extremes. The 2 separate ranges (low range for high torque, high range for high speeds) offer optimal performance across the entire range. For most operations, a single range covers the need; changing is only necessary for radical changes in operation.
Does the UWF 80 E Vario replace the basic UWF 80 E?
No, they are 2 parallel models with different characteristics. The basic UWF 80 E is entry-level with 8 predefined stages; the UWF 80 E Vario is professional with continuous speed. Both remain in the Bernardo catalog for workshops with different needs.
For workshops with standard production on known materials, the basic UWF 80 E is sufficient and more economical. For workshops with needs to optimize cutting parameters (variety of materials, prototypes, precision production), the UWF 80 E Vario justifies the difference. The price difference reflects the inverter, the more powerful motor, and the electrical complexity.
How reliable is the Delta-Frequency inverter?
Delta is one of the leading industrial inverter manufacturers in the world, with recognized reliability in continuous industrial applications. Operating life is typically over 10 years in standard daily use.
Inverters are electronic components with a finite lifespan (vs mechanical components of the machine). In case of failure, replacing the inverter is a standard maintenance operation (1-2 hours of intervention). The replacement cost is low compared to the value of the machine. For intensive use, it is recommended to monitor operating conditions (temperature, cleanliness of air intakes) to maximize lifespan.
Which range should be used for milling on standard steel?
For standard steels (S235, C40) with Ø 10-20 mm tools, the high range 250-2,000 rpm is generally suitable. For large tools (Ø over 50 mm) or hardened steels, the low range 75-600 rpm is more appropriate.
The optimal cutting speed depends on the tool diameter and material: the formula is V = π × D × n / 1,000 (V in m/min, D in mm, n in rpm). For mild steel with a Ø 12 mm HSS cutter, a typical V is 25-30 m/min, corresponding to approximately 700-800 rpm. For carbide, the same operation can go up to 60-100 m/min (1,500-2,500 rpm). Fine continuous adjustment with the inverter allows finding the optimal value.
