The Bernardo Profi 450 S bench lathe is sized for craft workshops, professional laboratories, and advanced hobbyists requiring continuous use, offering full metric and imperial threading and superior robustness. It features a 450 mm distance between centers, 115 mm center height, 230 mm swing over bed, 20 mm spindle bore with MK 3 taper, 125 mm self-centering chuck with flange, and a speed range of (6) 125-2,000 rpm (mechanical gearbox). Longitudinal feeds are (2) 0.1-0.2 mm/rev. Metric threads include (14) 0.4-3.5 mm, and imperial threads include (12) 8-44 TPI. The tailstock quill has a 60 mm travel with an MT 2 taper. The motor is 0.9 kW (S1) - 1.35 kW (S6) at 230V single-phase, with a weight of 112 kg, and machine dimensions of 1,000 × 580 × 500 mm (without base). 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: (6) 125-2,000 rpm (mechanical gearbox)
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Longitudinal feeds: (2) 0.1-0.2 mm/rev
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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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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 and for what
The Bernardo Profi 450 S is a professional bench lathe from the Profi medium range, weighing 112 kg, with dimensions of 1,000 × 580 × 500 mm. It has a 450 mm distance between centers, 115 mm center height, and a 230 mm swing over bed. It features a 125 mm self-centering chuck with a 20 mm bore, MK3 taper, and a 125 mm flange. The Profi 450 S has a 6-step mechanical gearbox (125-2000 rpm). The practical difference from the Profi 450 S Vario (continuous speed) is that the mechanical gearbox offers greater stability of the set speed under load (the speed does not drop when the tool encounters resistance), which is an important feature for precision threading and turning large workpieces. The Vario version allows fine adjustment of the optimal speed for each material but may experience speed drops under heavy load. Longitudinal feeds are 2 steps (0.1 / 0.2 mm/rev). It offers 14 metric thread steps (0.4-3.5 mm) and 12 imperial thread steps (8-44 TPI), providing extensive coverage for professional production of threaded parts. It includes a 4-position tool post for quick changes between roughing, finishing, threading, and drilling tools. The cross slide with a compound rest allows for complex machining operations (taper turning, radii). The 0.90 kW (S1) - 1.35 kW (S6) motor offers superior power compared to the Profi compact range (0.50-0.60 kW) for more demanding tasks. In Krollit customer workshops, the Profi 450 S/450 S Vario is chosen by craft workshops for 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 size 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) 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 differs from the Profi 450 S Vario in its 6-step mechanical gearbox (vs. continuous) with greater stability under load. Practical difference: the 450 S is preferable for precision threading and high-load machining where speed must remain constant; the 450 S Vario is preferable for a variety of materials. For more demanding use with separate longitudinal + cross feeds, the Profi 550 WQ/WQV is correctly sized.
Krollit Logistics and Support
Bernardo shipping in 5-9 working days (7 days to the South). With a weight of 112 kg, it requires a pallet truck or two-three people for careful unloading. The machine is supplied WITHOUT a base: for positioning, a dedicated Bernardo base or a robust workbench (200+ kg capacity) is recommended. Replacement steel gears, additional self-centering chucks, inserts for the 4-position tool post, original Bernardo accessories and spare parts are available from stock with 3-5 working day shipping. Customer support available in Italian.
Who is the Profi 450 S for?
| Profile |
Compatibility |
Reason |
| Advanced hobbyist with dedicated workshop |
Recommended |
112 kg machine with a 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 |
6-step mechanical gearbox for stability under heavy load. Full metric + imperial threading for standard threaded parts production. |
| Technical school / professional training lab |
Recommended |
Professional lathe with complete features (threading, feeds, DK11 spindle) 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 a three-phase line, the 400V version of the Hobby 500 or Goliath range is correctly sized); programmed CNC (Profi lathes are manual, 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 taper |
MK 3 |
| Self-centering chuck |
Ø 125 mm with flange |
Speeds and Feeds
| Specification |
Value |
| Speed range |
(6) 125-2,000 rpm (mechanical gearbox) |
| Longitudinal feeds |
(2) 0.1-0.2 mm/rev |
Threads
| 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 |
Dimensions and Weight
| Specification |
Value |
| Machine dimensions (L × W × H) |
1,000 × 580 × 500 mm (without base) |
| Weight |
112 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/EC |
Standard equipment
- Bernardo Profi 450 S lathe complete
- Self-centering chuck Ø 125 mm with flange
- Flange Ø 125 mm
- Cross slide with compound rest
- Change gears
- 4-position tool post
- Fixed tailstock center
- Spindle protection
- Splash guard
- Leadscrew cover
- Tool kit
- User manual in Italian
Frequently Asked Questions
Is it better to 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 (continuous adjustment) is preferable for workshops with a variety of materials where fine-tuning of 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 adjustment 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 labs working with exotic materials (titanium, special alloys), the fine-tuning of the Vario is valuable.
Is the 230V single-phase power supply really sufficient for professional use?
For the Profi 450 S, 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 use in a craft workshop, 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), verify 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 types of workpieces can I machine with the Profi 450 S?
Typical workpieces: cylindrical turning of shafts and cylinders up to Ø 230 mm and 450 mm length 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 bars). For larger workpieces, the larger models in the Profi range or the Goliath range are correctly sized. For standard occasional hobby use, all Profi models are suitable; for regular production with specific workpieces, verify the capacity of the chosen model.
Do I need to buy a separate base?
Yes, if you want to install the machine in a fixed position in the workshop. The Profi 450 S is supplied WITHOUT a base: it is typically installed on a dedicated Bernardo base (purchased separately) or on a robust workbench with a load capacity exceeding 200 kg.
The dedicated Bernardo base for the Profi medium/heavy range includes: a folded steel sheet structure, height adjustment for operator ergonomics, an integrated chip tray, and possibly drawers for tools. For daily professional use, the dedicated base is recommended for greater stability during machining and for ergonomics.
Is the machine already complete, or do I need additional accessories?
The machine comes with standard equipment sufficient for immediate use: a Ø 125 mm self-centering chuck with flange, a 4-position tool post, a fixed tailstock center, spare steel gears, spindle protection, splash guard and leadscrew cover, and a tool kit.
Optional accessories typically purchased separately: self-centering chucks of different diameters, steady rests for long workpieces, a 4-jaw chuck for non-cylindrical workpieces, additional turning tool sets (HSS, carbide), collets for MK3/MT4 spindle. For most standard machining, the basic equipment is sufficient; for specific productions, consider dedicated accessories. All original Bernardo accessories are available from Krollit with 3-5 working day shipping.
