The Bernardo Profi 400 G bench lathe is sized for advanced hobbyists, professional model makers, and small workshops with precision requirements, comprehensive threading, and a digital speed display. Distance between centers 400 mm, center height 105 mm, swing over bed Ø 210 mm, spindle bore Ø 21 mm with MK 3 taper, 3-jaw self-centering chuck DK 11 Ø 100 mm, speed range 50-1,250 / 100-2,500 rpm (continuously variable). Longitudinal feeds (3) 0.089-0.198 mm/rev. Metric threads (15) 0.3-3 mm, inch threads (12) 10-44 TPI. Tailstock quill travel 55 mm with MK 2 taper. Motor 0.6 kW (S1) - 0.8 kW (S6) at 230V single-phase, weight 60 kg, machine dimensions 930 × 400 × 380 mm (without stand). Distributed in Italy by Krollit as an official Bernardo distributor since 2007.
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Distance between centers: 400 mm
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Center height: 105 mm
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Swing over bed: Ø 210 mm
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Spindle bore: Ø 21 mm MK 3 taper
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Self-centering chuck: DK 11 Ø 100 mm with 3 jaws
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Speed range: 50-1,250 / 100-2,500 rpm (continuously variable)
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Longitudinal feeds: (3) 0.089-0.198 mm/rev
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Metric threads: (15) 0.3-3 mm
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Inch threads: (12) 10-44 TPI
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Digital display: Speed indication
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Motor: 0.6 kW (S1) / 0.8 kW (S6) - 230V single-phase
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Weight: 60 kg
Who uses the Profi 400 G and for what
The Bernardo Profi 400 G is a compact bench lathe from the Profi range (professional entry-level), sized for advanced hobbyists, model makers, and small workshops. Features of the Profi 400 G: 400 mm distance between centers, 60 kg weight, dimensions 930 × 400 × 380 mm. Intermediate model in the compact Profi range: greater capacity than the Profi 300 V (Ø 210 vs 180 mm swing over bed) for medium-sized workpieces. DK11 Ø 100 mm 3-jaw chuck with Ø 21 mm bore, MK3 taper (1 mm larger bore than Profi 300 V and Profi 400 V). Same variable speed (50-1250/100-2500 rpm) and same threading configuration as the 300 V and 400 V, but with a slightly more powerful motor (0.60 kW S1 vs 0.50 for the 300 V). 3-step automatic feeds (0.083-0.159 mm/rev in 300 V, 0.089-0.198 in 400 G/400 V) for finish control. Metric threads 14-15 steps (0.3-3 mm) and inch threads 10-12 steps (10-44 TPI): standard coverage for common threaded parts production. Digital speed indicator for precise control of the set rpm. In Krollit customer workshops, compact Profi lathes are chosen by advanced hobbyists who want professional features (threading, feeds, display) in compact bench machines without the need for a dedicated stand.
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 artisanal workshops with daily use; Profi 550 WQ and 550 WQV (heavy 120 kg, 0.75 kW motor but with separate longitudinal+cross feeds and comprehensive threading) for professional production of complex threaded parts. Below the Profi range is the Hobby range (entry-level 14-130 kg); above it is the Goliath range (heavy industrial 1,500-3,500 kg).
The Profi 400 G is the professional entry-level model of the Profi range: professional features (comprehensive threading, automatic feeds, digital speed display) in a compact bench machine. For continuous professional use with larger workpieces, the Profi 450 S/450 S Vario (112 kg) or 550 WQ/WQV (120 kg) is appropriately sized. For heavy industrial production, the Goliath range is appropriately sized. The 3 compact models (300 V, 400 G, 400 V) differ in: 300 V being more compact and slightly less powerful, 400 G with Ø 21 mm spindle bore and 105 mm center height, 400 V with Ø 20 mm bore and 100 mm center height.
Krollit logistics and support
Bernardo shipping in 5-9 business days (7 days to the South). With a weight of 60 kg, it can be moved by one person; the lathe is sized for placement on an existing sturdy workbench (100+ kg capacity). Additional self-centering chucks, inserts for 4-position tool posts, spare gears, original Bernardo accessories and spare parts available from stock with 3-5 business days shipping. Customer support available in Italian.
Who is the Profi 400 G for
| Profile |
Compatibility |
Reason |
| Advanced hobbyist / professional model maker |
Recommended |
Compact 60 kg lathe with professional features: comprehensive metric+inch threading, automatic feeds, digital speed display. 400 mm distance between centers and Ø 210 mm swing over bed for small-medium workpieces. |
| Small artisanal workshop |
Recommended |
DK11 Ø 100 mm chuck with through hole for standard accessory use (collets, reductions, 4-jaw chucks for special accessories). Continuously variable electronic speed for tuning to different materials. |
| Workshop with regular production and large workpieces |
Adequate |
For intensive use with workpieces over Ø 200-210 mm on the bed, the Profi 450 S/Vario (Ø 230 mm) or the 550 WQ/WQV (Ø 250 mm) with a more powerful motor is correctly sized. |
Not suitable for: daily professional use with large workpieces (over Ø 210 mm on the bed; the Profi 450 S/Vario or 550 WQ/WQV is correctly sized); workshops without a good 230V industrial line (0.50-0.60 kW motor requires a sized domestic meter); 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 are manual lathes, not CNC).
Machining capacity
| Specification |
Value |
| Distance between centers |
400 mm |
| Center height |
105 mm |
| Swing over bed |
Ø 210 mm |
Spindle
| Specification |
Value |
| Spindle bore |
Ø 21 mm |
| Spindle bore taper |
MK 3 |
| Self-centering chuck |
DK 11 Ø 100 mm with 3 jaws |
Speed and feeds
| Specification |
Value |
| Speed range |
50-1,250 / 100-2,500 rpm (continuously variable) |
| Longitudinal feeds |
(3) 0.089-0.198 mm/rev |
Threads
| Specification |
Value |
| Metric threads |
(15) 0.3-3 mm |
| Inch threads |
(12) 10-44 TPI |
Tailstock
| Specification |
Value |
| Tailstock quill travel |
55 mm |
| Tailstock taper |
MK 2 |
Motor and power supply
| Specification |
Value |
| Motor power S1 100% |
0.6 kW |
| Motor power S6 40% |
0.8 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) |
930 × 400 × 380 mm (without stand) |
| Weight |
60 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/EC |
Standard equipment
- Bernardo Profi 400 G lathe complete
- Self-centering chuck DK 11 Ø 100 mm with 3 jaws
- Four-way tool post
- Live centers
- Spare gears
- Spindle guard
- Rear chip guard
- Chip tray
- Digital speed indication
- Spare wheels
- User manual in Italian
Frequently asked questions
What is the difference between the Profi 400 G and the Hobby models in the range?
The compact Profi models are one level above the Hobby: professional features (comprehensive metric+inch threading, DK11 Ø 100 mm chuck, digital speed display, 0.50-0.60 kW motor) in a compact bench machine. The Hobby models are entry-level with simpler features (optional threading on basic models, smaller diameter chucks, 0.15-0.55 kW motors).
Practical difference: for occasional hobby use, a Hobby 250/350 is sufficient; for more intensive use with professional threading requirements, the compact Profi is appropriately sized. The medium Profi range (450 S/Vario) and heavy (550 WQ/WQV) are sized for daily professional or continuous advanced hobby use.
Is the 230V single-phase power supply truly sufficient for professional use?
For the Profi 400 G, yes. The 0.6 kW (S1) - 0.8 kW (S6) motor is sized for continuous use at 230V single-phase. The machine is sized for professional artisanal 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 appropriately sized.
What workpieces can I process with the Profi 400 G?
Typical workpieces: cylindrical turning of shafts and cylinders up to Ø 210 mm and 400 mm length between centers, facing, grooving, chamfering and radiusing, metric threads (15) 0.3-3 mm and inch threads (12) 10-44 TPI. Typical materials: mild steels (Fe360, S235), alloy steels (C45, 39NiCrMo3), stainless steels (AISI 304, 316), aluminum and light alloys, brass, bronze, technical plastics.
Limits: maximum Ø over bed 210 mm, spindle bore Ø 21 mm (maximum limit for through bars). For larger workpieces, the upper models of the Profi range or the Goliath range are appropriately sized. For standard occasional hobby use, all Profi models are adequate; for regular production with specific workpieces, check the capacity of the chosen model.
Can I install the Profi 400 G on any workbench?
Yes, on sturdy workbenches with a load capacity greater than the weight of the machine (60 kg) plus the workpieces being processed. The workbench must be stable and level: instability causes vibrations that compromise the precision of the work.
For artisanal workshops, a professional workbench is recommended (e.g., WB 2100 Profi from the Bernardo range) with a solid beech wood top, or a dedicated steel sheet stand. The machine must be bolted to the workbench using through bolts in the provided base holes to prevent sliding during machining.
Is the machine already complete or do I need additional accessories?
The machine comes with standard equipment sufficient for immediate use: DK 11 Ø 100 mm 3-jaw self-centering chuck, four-way tool post, fixed center, steel spare gears, spindle guard, chip tray, spare wheels.
Optional accessories typically purchased separately: self-centering chucks of different diameters, steady rests for long workpieces, 4-jaw chuck for non-cylindrical workpieces, additional turning tool sets (HSS, carbide), collets for MK3/MT4 spindle. For most standard machining operations, the basic equipment is sufficient; for specific productions, evaluate dedicated accessories. All original Bernardo accessories are available from Krollit with 3-5 business days shipping.
