The Bernardo 40 mm roughing roller cutter is a professional cutting tool available from Krollit, an official Bernardo distributor since 2007.
- Diameter: 40 mm
- Bore: 16 mm
- Width: 32 mm
- Number of teeth: 6
Who uses the 40 mm roughing roller cutter and for what
Machine shops and tool workshops use the 40 mm roughing roller cutter for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
The Bernardo 40 mm roughing roller cutter is part of the Bernardo cutting tool range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance levels: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.
Krollit Logistics and Support
Shipping 3-5 business days from Krollit warehouse for spare parts and accessories. Customer support in Italian available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the 40 mm roughing roller cutter for
The 40 mm roughing roller cutter is recommended for the following professional profiles:
-
Machine shops and tool workshops: cutting and sharpening operations on compatible materials.
-
Users with compatible machines: replacement part or original tool for the specified machine.
-
Out-of-specification materials: verify machinable material and tool geometry before use.
Frequently asked questions
What is a roughing cutter used for?
Rapid removal of large volumes of material before finishing, with aggressive "roller" teeth for chip evacuation.
Roughing cutters produce a coarse finish but remove material 3-5 times faster than standard cutters. They are used for preliminary machining before finishing cutters.
What material is the cutter made of?
Check the technical data sheet for the material: typically HSS or hard metal (HM) for precision cutters.
HSS for general use, HSS-Co for hard steels, HM for series production and abrasive materials. The choice depends on the intensity of use and the material being processed.
Which milling machines can it be mounted on?
It can be mounted on universal milling machines with BT, ISO taper or direct attachment. Check your machine's attachment before purchasing.
For milling machines with Morse taper, an adapter collet chuck is required. Bernardo FM series universal milling machines have standard BT 30 or BT 40 attachments.
How much material can it remove per pass?
Typically 0.5-3 mm depth per pass, depending on the machine's power and the material's hardness.
On mild steel with a 2-3 kW milling machine, a depth of 1-2 mm is optimal. On hardened steels, reduce to 0.3-0.8 mm per pass. Cutting speed: 60-120 m/min on steel.
How is it lubricated during machining?
Use cutting oil or cooling emulsion applied directly to the cutting point. Coolant reduces heat and extends tool life.
On hard steels or high thicknesses, lubrication is essential: without coolant, the cutter overheats, loses sharpness, and can break prematurely. Recommended cutting speed: 20-30 m/min on mild steel.
