The Bernardo KFM 100 K circular chamfering machine is a lightweight handheld tool for deburring, chamfering, and radiusing steel, stainless steel, plastic, and non-ferrous metals. It features a 45° milling head with 2 TiN-coated carbide inserts, continuously adjustable chamfer from 0 to 4 mm in 0.1 mm increments, a minimum internal radius of 20 mm, a speed of 10,000 rpm, and a 720 W single-phase 230V motor. Weight 3.5 kg. Made in Austria, distributed in Italy by Krollit as an official Bernardo distributor since 2007.
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Chamfer Angle: Fixed 45°
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Chamfer Width: 0 – 4 mm adjustable (0.1 mm increments)
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Minimum Internal Radius: 20 mm
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Cutting Inserts: 2 TiN-coated inserts
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Speed: 10,000 rpm
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Motor: 720 W – 230V single-phase
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Weight: approx. 3.5 kg
Who uses the KFM 100 K and for what
The Bernardo KFM 100 K is a compact handheld chamfering machine for the quick removal of sharp edges, cutting burrs, and dangerous corners on metal parts of various shapes. The fixed 45° angle is standard for typical mechanical engineering chamfering, while the continuous adjustment of the chamfer width from 0-4 mm in 0.1 mm increments allows for precise finish control. Its ability to work on internal radii up to 20 mm distinguishes it from fixed bench chamfering machines. The TiN-coated carbide inserts ensure superior durability compared to standard inserts and a clean finish on steel, stainless steel, aluminum, brass, and plastic. In Krollit customer workshops, it is chosen by mechanical workshops for post-cutting finishing, metal fabricators for chamfering edges for welding, and laboratories working on safety-critical metal parts where burrs are unacceptable.
Its place in the Bernardo range
In the Bernardo chamfering machine range, the KFM 100 K is the entry-level model for manual use at 45°. The KFM 200 M chamfering machines (with linear guide) in the same range offer a chamfer width up to 10 mm and angle adjustment from 15°-45°, sized for heavy chamfers on panels and steel beams for welding. The difference is in purpose: the KFM 100 K is a quick finishing tool for removing burrs and edges on finished parts; the KFM 200 M is a preparation machine for welding seams in heavy fabrication. For most workshops, the KFM 100 K is the right tool for daily deburring; the KFM 200 M only makes sense if V-chamfers for welding on steel thicker than 6-8 mm are regularly performed.
Krollit logistics and support
Bernardo shipping in 5-9 working days (7 days to Southern Italy). Weighing 3.5 kg, it is shipped in a carrying case and can be handled and used by one person. Original Bernardo TiN inserts, grinding wheels, and spare accessories are available from stock with shipping in 3-5 working days. Customer support is available in Italian.
Who is the KFM 100 K for?
| Profile |
Compatibility |
Reason |
| Passionate hobbyist |
Suitable |
Useful tool for those who regularly work with metals and need to remove cutting burrs. For occasional use (a few operations per month), it may be oversized: consider economical handheld chamfering machines. |
| Mechanical workshop / Blacksmith |
Recommended |
For quick deburring, chamfering edges on cut parts, post-welding finishing. TiN-coated inserts cover most metal materials. Suitable for daily artisanal use. |
| Heavy fabrication / Welding preparation |
Suitable |
For deep V-chamfers (over 4 mm) for welding on thick steel, consider the KFM 200 M with a chamfer width up to 10 mm and angular adjustment. |
Not suitable for: deep chamfers over 4 mm wide (consider KFM 200 M); preparing welding seams on steel over 6-8 mm thick (KFM 200 M); working on internal radii smaller than 20 mm (requires smaller milling cutters).
Chamfering Capacity
| Specification |
Value |
| Chamfer Angle |
Fixed 45° |
| Chamfer Width |
0 – 4 mm |
| Chamfer Adjustment |
Continuous, 0.1 mm increments |
| Minimum workable internal radius |
20 mm |
Cutter
| Specification |
Value |
| Number of inserts |
2 |
| Insert material |
TiN-coated carbide |
| Rotation speed |
10,000 rpm |
Motor and Power Supply
| Specification |
Value |
| Motor Power |
720 W |
| Power Supply |
230V – 50Hz – single-phase |
Dimensions and Weight
| Specification |
Value |
| Machine Dimensions (L × W × H) |
300 × 190 × 140 mm |
| Net Weight |
approx. 3.5 kg |
Compliance
| Specification |
Value |
| Marking |
CE |
| Directive |
Machinery Directive 2006/42/EC |
Standard Equipment
- 45° milling head
- TiN-coated carbide inserts
- Side handle
- Tool set for insert changes
Frequently Asked Questions
What materials can I use the KFM 100 K on?
Mild steel, stainless steel, aluminum, brass, copper, engineering plastics. TiN inserts are suitable for all typical ferrous and non-ferrous metals used in fabrication.
TiN (titanium nitride) coated carbide inserts have significantly longer life than standard HSS inserts and maintain their edge at high operating temperatures. For stainless steel and high-strength steels, the feed rate should be reduced to avoid overheating the insert. For exclusive applications on special materials (titanium, nickel alloys), consult Krollit for dedicated inserts.
How long do TiN inserts last?
In artisanal use, TiN inserts last from 200 to 500 linear meters of chamfering on mild steel before requiring rotation (they are reversible) or replacement.
Actual life depends on the material being worked (stainless steel accelerates wear), the set chamfer thickness (4 mm wears faster than 1 mm), and the feed rate. Original Bernardo replacement TiN inserts are available from stock with shipping in 3-5 working days. For workshops with intensive use, it is advisable to keep at least a stock of inserts.
What is the difference between KFM 100 K and KFM 200 M?
The KFM 100 K is a circular handheld chamfering machine, chamfer up to 4 mm, fixed 45° angle, weight 3.5 kg. The KFM 200 M is a 200 mm linear guide chamfering machine, chamfer up to 10 mm, adjustable angle 15°-45°, weight 11 kg.
The two machines address different needs. The KFM 100 K is a finishing tool: fast, lightweight, for deburring and small chamfers. The KFM 200 M is a preparation machine: it operates on panels and beams following a linear guide, for deep chamfers typical of welding seam preparation. For general workshops with predominantly finishing chamfering, the KFM 100 K is the right choice.
Can I work on internal radii with the KFM 100 K?
Yes, up to a minimum internal radius of 20 mm. For narrower radii, the geometry of the milling head cannot access, and unworked residue will form.
The ability to work on internal radii distinguishes the KFM 100 K from fixed bench chamfering machines. The 20 mm limit covers the vast majority of metal fabrication parts with internal angles or curves. For chamfering on internal radii smaller than 20 mm, dedicated end mills mounted on pneumatic or electric rotary tools are required, not chamfering machines.
Is the 720 W motor sufficient for continuous use?
Yes, for artisanal-daily use. For continuous industrial cycles (over 4 hours a day), evaluate the thermal management of the motor with adequate breaks for heat dissipation.
The 720 W is sized for intensive intermittent use. The motor can reach high temperatures during prolonged continuous use, a condition that reduces the tool's lifespan. For workshops with high daily use, it is recommended to organize work with cooling breaks or consider chamfering machines with cooled motors sized for industrial cycles.
