The Bernardo Profi 450 S Vario bench lathe is sized for craft workshops, professional laboratories, and advanced hobbyists for continuous use, with full metric+inch threading capabilities and superior robustness. Distance between centers 450 mm, center height 115 mm, swing over bed Ø 230 mm, spindle bore Ø 20 mm with MK 3 taper, self-centering chuck Ø 125 mm with flange, speed range 100-1,100 / 200-2,200 rpm (continuously variable). Longitudinal feeds (2) 0.1 / 0.2 mm/revolution. Metric threads (14) 0.4-3.5 mm, imperial threads (12) 8-44 TPI. Tailstock quill travel 60 mm with MT 2 taper. Motor 0.9 kW (S1) - 1.35 kW (S6) at 230V single-phase, weight 112 kg, machine dimensions 1,000 × 580 × 500 mm (without stand). Distributed in Italy by Krollit as an official Bernardo distributor since 2007.
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Distance between centers: 450 mm
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Center height: 115 mm
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Swing over bed: Ø 230 mm
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Spindle bore: Ø 20 mm MK 3 taper
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Self-centering chuck: Ø 125 mm with flange
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Speed range: 100-1,100 / 200-2,200 rpm (continuously variable)
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Longitudinal feeds: (2) 0.1 / 0.2 mm/revolution
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Metric threads: (14) 0.4-3.5 mm
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Imperial threads: (12) 8-44 TPI
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Digital display: Speed indication
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Motor: 0.9 kW (S1) / 1.35 kW (S6) - 230V single-phase
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Weight: 112 kg
Who uses the Profi 450 S Vario and for what
The Bernardo Profi 450 S Vario is a professional bench lathe from the Profi medium range, weighing 112 kg, with dimensions of 1,000 × 580 × 500 mm. Distance between centers 450 mm, center height 115 mm, swing over bed Ø 230 mm. Self-centering chuck Ø 125 mm with Ø 20 mm bore, MK3 taper, and Ø 125 mm flange. The Profi 450 S Vario has a distinctive feature: continuous electronic speed regulation with digital rpm display. Dual speed range (100-1100 / 200-2200 rpm) selectable via mechanical gearbox for different torque requirements. Practical difference from the Profi 450 S (6-step mechanical gearbox): the Vario version allows for precise tuning of optimal speed for each material (turning stainless steel, aluminum, hard steels requires specific speeds), while the step gearbox has predefined speeds but greater stability under load. Longitudinal feeds 2 steps (0.1 / 0.2 mm/revolution). Metric threads 14 steps (0.4-3.5 mm) and imperial threads 12 steps (8-44 TPI): wide coverage for professional production of threaded parts. 4-position tool post for quick changes between roughing, finishing, threading, and drilling tools. Cross slide with top support for complex machining operations (taper turning, radii). Motor 0.90 kW (S1) - 1.35 kW (S6): higher power than the Profi compact range (0.50-0.60 kW) for more demanding operations. In Krollit customer workshops, the Profi 450 S/450 S Vario is chosen by craft workshops with regular daily use, professional technical schools, and advanced hobbyists with dedicated workshops.
Its place in the Bernardo range
The Bernardo Profi metal lathe range is organized by progressive dimensions and features: Profi 300 V, 400 G, 400 V (compact 60-65 kg, 0.50-0.60 kW motor, electronic variable speed) for advanced hobbyists and small workshops; Profi 450 S and 450 S Vario (medium 112 kg, 0.90 kW motor) for craft workshops with daily use; Profi 550 WQ and 550 WQV (heavy 120 kg, 0.75 kW motor but with separate longitudinal+cross feeds and full threading capabilities) for professional production of complex threaded parts. Below the Profi range is the Hobby range (entry-level 14-130 kg); above is the Goliath range (heavy industrial 1,500-3,500 kg).
The Profi 450 S Vario differs from the Profi 450 S in: continuous speed regulation (vs 6 mechanical steps), digital rpm indication, an advantage in fine-tuning for specific materials. Disadvantage: possible speed drops under heavy load. For workshops with a variety of materials (different steels, stainless steel, aluminum), the Vario version is preferable; for workshops specializing in high-load operations, the 450 S step version is more stable. For more demanding use with separate feeds and more complete threading, the Profi 550 WQ/WQV is correctly sized.
Logistics and Krollit support
Bernardo shipping in 5-9 working days (7 days to the South). With a weight of 112 kg, a pallet truck or two-three people with care are required for unloading. The machine is supplied WITHOUT a stand: for positioning, a dedicated Bernardo stand or a robust workbench (capacity 200+ kg) is recommended. Spare steel gears, additional self-centering chucks, inserts for 4-position tool post, original Bernardo accessories and spare parts are available from stock with shipping in 3-5 working days. Customer support in Italian is available.
Who the Profi 450 S Vario is for
| Profile |
Compatibility |
Reason |
| Advanced hobbyist with dedicated workshop |
Recommended |
112 kg machine with 0.90 kW motor: professional features for daily use in a dedicated workshop. Superior robustness and capacity compared to the Profi compact range. |
| Craft workshop with daily use |
Recommended |
Continuous speed for variety of materials and fine-tuning, digital rpm indication. |
| Technical school / professional training laboratory |
Recommended |
Professional lathe with complete features (threading, feeds, DK11 chuck) for teaching industrial turning. Robustness suitable for intensive use by multiple students. |
Not suitable for: production of threaded parts with separate cross feeds (the Profi 550 WQ/WQV with separate 6+4 step feeds is correctly sized); heavy industrial use with parts over Ø 230 mm (the Goliath range is correctly sized); three-phase 400V power supply (for workshops with three-phase lines, the 400V version of the Hobby 500 or Goliath range is correctly sized); programmed CNC (Profi are manual lathes, not CNC).
Machining capacity
| Specification |
Value |
| Distance between centers |
450 mm |
| Center height |
115 mm |
| Swing over bed |
Ø 230 mm |
| Bed width |
135 mm |
Spindle
| Specification |
Value |
| Spindle bore |
Ø 20 mm |
| Spindle bore taper |
MK 3 |
| Self-centering chuck |
Ø 125 mm with flange |
Speed and feeds
| Specification |
Value |
| Speed range |
100-1,100 / 200-2,200 rpm (continuously variable) |
| Longitudinal feeds |
(2) 0.1 / 0.2 mm/revolution |
Threading
| Specification |
Value |
| Metric threads |
(14) 0.4-3.5 mm |
| Imperial threads |
(12) 8-44 TPI |
Tailstock
| Specification |
Value |
| Tailstock quill travel |
60 mm |
| Tailstock taper |
MT 2 |
Motor and power supply
| Specification |
Value |
| Motor power S1 100% |
0.9 kW |
| Motor power S6 40% |
1.35 kW |
| Voltage |
230V single-phase / 50 Hz |
Digital indication
| Specification |
Value |
| Speed display |
Digital rpm indication |
Dimensions and weight
| Specification |
Value |
| Machine dimensions (L × W × H) |
1,000 × 580 × 500 mm (without stand) |
| Weight |
112 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/EC |
Standard equipment
- Bernardo Profi 450 S Vario lathe complete
- Self-centering chuck Ø 125 mm with flange
- Flange Ø 125 mm
- Cross slide with top support
- Spare gears
- 4-position tool post
- Fixed tailstock center
- Spindle guard
- Splash guard
- Leadscrew cover
- Digital speed indication
- Tool kit
- User manual in Italian
Frequently asked questions
Should I choose the Vario version or the standard 450 S?
It depends on the use: the standard version (450 S, 6-step mechanical gearbox) is preferable for workshops with intensive use where speed stability under load is important (precision threading, aggressive roughing, machining with carbide tools). The Vario version (continuously variable regulation) is preferable for workshops with a variety of materials where fine-tuning the optimal speed is important.
Practical difference: the mechanical gearbox has 6 predefined speeds, but the set speed remains constant even under heavy load. Continuous regulation allows any speed within the range but may experience speed drops (5-15%) under heavy load. For most craft workshops, the standard 450 S version is sufficient; for laboratories working with exotic materials (titanium, special alloys), the fine-tuning of the Vario is valuable.
Is the 230V single-phase power supply truly sufficient for professional use?
For the Profi 450 S Vario, yes. The 0.9 kW (S1) - 1.35 kW (S6) motor is sized for continuous use at 230V single-phase. The machine is sized for professional craft workshop use, not for heavy industrial production.
Recommended check before installation: electrical line with adequate cross-section (4 mm² cable for 0.90+ kW motor, 2.5 mm² for 0.50-0.80 kW motors), dedicated 16-20A circuit breaker, CEE 16A 230V industrial socket. For workshops with other simultaneous loads (compressors, extractors), check the available power on the meter (minimum 6 kW for simultaneous use). For heavy industrial use, the Goliath range with a 9 kW three-phase 400V motor is correctly sized.
What parts can I work with the Profi 450 S Vario?
Typical parts: cylindrical turning of shafts and cylinders up to Ø 230 mm and length 450 mm between centers, facing, grooving, chamfering and radiusing, metric threads (14) 0.4-3.5 mm and imperial threads (12) 8-44 TPI. Typical materials: mild steels (Fe360, S235), alloy steels (C45, 39NiCrMo3), stainless steels (AISI 304, 316), aluminum and light alloys, brass, bronze, technical plastics.
Limitations: maximum Ø over bed 230 mm, spindle bore Ø 20 mm (maximum limit for through-bar work). For larger parts, the higher models in the Profi range or the Goliath range are correctly sized. For occasional hobby use, all Profi models are suitable; for regular production of specific parts, check the capacity of the chosen model.
Do I need to purchase a separate stand?
Yes, if you want to install the machine in a fixed position in the workshop. The Profi 450 S Vario is supplied WITHOUT a stand: it is typically installed on a dedicated Bernardo stand (purchased separately) or on a robust workbench with a load capacity exceeding 200 kg.
The dedicated Bernardo stand for the Profi medium/heavy range includes: folded steel sheet structure, height adjustment for operator ergonomics, integrated chip tray, possibly tool drawers. For daily professional use, the dedicated stand is recommended for greater stability during machining and for ergonomics.
Is the machine already complete or are additional accessories needed?
The machine comes with standard equipment sufficient for immediate use: Ø 125 mm self-centering chuck with flange, 4-position tool post, fixed tailstock center, spare steel gears, spindle guard, splash guard and leadscrew cover, tool kit.
Optional accessories typically purchased separately: self-centering chucks of different diameters, steady rests for long parts, 4-jaw chuck for non-cylindrical parts, sets of additional turning tools (HSS, carbide), collets for MK3/MT4 spindle. For most standard operations, the basic equipment is sufficient; for specific productions, evaluate dedicated accessories. All original Bernardo accessories are available from Krollit with shipping in 3-5 working days.
