The Bernardo KFM 200 M portable chamfering machine offers a chamfer width of up to 10 mm at 45°, angle adjustment from 15°-45°, a 200 mm guide rail for linear stability, and a 0.55 kW three-phase 400V motor with a speed of 2,800 rpm. It is designed for preparing weld seams on steel panels, beams, and profiles with 90° surfaces. Weight: 11 kg. Manufactured in Austria, distributed in Italy by Krollit as the official Bernardo distributor since 2007.
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Chamfer width at 45°: up to 10 mm
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Chamfer angle adjustment: 15° – 45°
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Guide rail: 200 mm
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Speed: 2,800 rpm
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Motor: 0.55 kW – 400V three-phase
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Weight: approx. 11 kg
Who uses the KFM 200 M and for what
The Bernardo KFM 200 M / 400V is a professional portable chamfering machine for preparing weld seams on steel panels, structural beams, and profiles with 90° surfaces. The 200 mm linear guide rail ensures that the milling head slides stably and repeatably, producing uniform chamfers over long lengths without the undulations or variations typical of free-hand chamfering machines. The 15°-45° angle adjustment allows the chamfer geometry to be adapted to the required welding type: open angles for full penetration welding, closed angles for filler welds. In Krollit customers' workshops, it is chosen by heavy metal fabricators, steel structure construction workshops, shipyards, and repair shops that require precise chamfers on workpieces up to 10 mm effective width.
Its place in the Bernardo range
The KFM 200 M is available in both a 400V three-phase version (this model) and a 230V single-phase version. The specifications are identical: only the power supply changes. The 400V version is preferable for continuous professional use due to the more consistent motor torque; the 230V version is the only choice for workshops without a three-phase line. In the Bernardo chamfering machine range, the KFM 200 M occupies the professional segment for preparing weld seams on light-to-medium fabrication. Below it is the KFM 100 K (free-hand, chamfer up to 4 mm) for quick finishing; above it are industrial chamfering machines with chamfer widths over 15 mm and guide rails up to 500 mm. For most fabrication workshops that do regular welding, the KFM 200 M is the standard preparation machine.
Krollit Logistics and Support
Bernardo shipping in 5-9 business days (7 days to the South). At 11 kg, it is shipped in a carrying case and can be handled by one person. Original Bernardo spare inserts, grinding wheels, and accessories are available from stock with 3-5 business days shipping. Customer support in Italian is available.
Who the KFM 200 M is for
| Profile |
Compatibility |
Reason |
| Passionate hobbyist |
Not recommended |
Machine sized for professional weld preparation use. Cost and 400V three-phase power make it unsuitable for hobby use. |
| Metal fabricator / professional welder |
Recommended |
Chamfer up to 10 mm at 45° with adjustable angle is sized for standard weld seam preparation. Guide rail ensures repeatability. |
| Heavy industrial fabrication |
Adequate |
For chamfers over 10 mm effective width or guide rails over 200 mm, consider industrial chamfering machines with extended travel and more powerful motors. |
Not recommended for: chamfers under 1 mm width (the machine is sized for weld preparation chamfers, not for fine finishing; consider KFM 100 K); workpieces with curved surfaces or angles not at 90° (require free-hand chamfering machines); workshops without a 400V three-phase line (choose KFM 200 M / 230V).
Chamfering capacity
| Specification |
Value |
| Chamfer width at 45° |
10 mm |
| Chamfer angle adjustment |
15° – 45° |
| Guide rail length |
200 mm |
Speed and motor
| Specification |
Value |
| Rotation speed |
2,800 rpm |
| Motor power |
0.55 kW |
| Power supply |
400V – 50Hz – three-phase |
Dimensions and weight
| Specification |
Value |
| Machine dimensions (L × W × H) |
370 × 250 × 230 mm |
| Net weight |
approx. 11 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery 2006/42/EC |
Standard equipment
- 200 mm guide rail
- Milling head
- Carbide inserts
- Tool set
Frequently asked questions
Can I make chamfers wider than 10 mm in multiple passes?
In theory, yes, but alignment between consecutive passes is critical and produces visually irregular results. For chamfers over 10 mm, consider industrial chamfering machines with a higher nominal width.
The precision of the 200 mm guide rail is optimized for a single pass up to 10 mm. Multiple passes require manual realignment which rarely produces coincident results without micro-steps. For shipyards and heavy fabrication with wide weld seams, industrial chamfering machines with a nominal width of up to 25-30 mm in a single pass are available.
Does the 15°-45° angle adjustment cover all types of welding?
It covers the vast majority of standard welds: V at 60° (30°×2 chamfer), X at 60° (30°×2 double-sided chamfer), Y, K. For special welds with particular angles, verify the required geometry.
Chamfer angles of 30°-37.5° (achieved with 30°-37.5° adjustments on one side) are the most common for structural welding of standard steels. Narrow-groove welds (angles below 15°) or open-groove welds (angles above 45°) require specialized equipment or processing with specific milling cutters.
What is the difference between KFM 200 M / 400V and / 230V?
They are identical except for the power supply: 400V three-phase vs 230V single-phase. Same chamfer specifications, weight, dimensions, 0.55 kW motor.
The 400V three-phase version has more consistent motor torque in prolonged use and handles heat better in intensive cycles. The 230V single-phase version is the choice for workshops without a three-phase line: nearly identical performance on intermittent use. For workshops that have both lines available, the 400V is preferable.
Can I also work on curved surfaces?
No. The 200 mm guide rail is designed for flat 90° surfaces. On curved surfaces, the machine does not slide uniformly, and the chamfer will be irregular.
For working on curved surfaces (vessels, tanks, tubular profiles), free-hand chamfering machines like the KFM 100 K are necessary, where the operator manually controls the pressure and feed speed. The KFM 200 M is specifically designed for panels and beams with constant cross-section and flat surfaces.
How long do carbide inserts last?
In professional weld seam preparation use, inserts last from 100 to 300 linear meters of chamfering on mild steel before rotation or replacement.
Durability depends on chamfer thickness (10 mm consumes 3-4 times faster than 3 mm), material (stainless steel reduces durability by 40-50%), and feed speed. For sites with intensive use, it is advisable to keep a stock of inserts. Original Bernardo spare inserts are available from stock with 3-5 business days shipping.
