High quality solid carbide internal full radius grooving tool for CNC lathes.
Strong, accurate and stable for internal radius grooves in steel, stainless steel, aluminum and cast iron.
A solid carbide internal full radius grooving tool, also called a carbide full radius grooving bar or a carbide internal radius cutting tool, is designed for making round internal grooves inside holes. The tool is made from strong solid carbide. It gives steady cutting performance, long life and smooth results. It is widely used in CNC lathes for radius grooves, forming work and fine internal machining.

| Ordering Code | L/mm | D/mm | L1/mm | R | H/mm | d/mm | Min. Dia./mm |
|---|---|---|---|---|---|---|---|
| MKR4 R0.5 L10 | 50 | 4 | 10 | R0.5 | 1.2 | 3.9 | 4.1 |
| MKR4 R0.5 L15 | 50 | 4 | 15 | R0.5 | 1.2 | 3.9 | 4.1 |
| MKR4 R0.75 L10 | 50 | 4 | 10 | R0.75 | 1.2 | 3.9 | 4.1 |
| MKR4 R0.75 L15 | 50 | 4 | 15 | R0.75 | 1.2 | 3.9 | 4.1 |
| MKR5 R0.5 L15 | 50 | 5 | 15 | R0.5 | 1.2 | 4.9 | 5.1 |
| MKR5 R0.5 L22 | 50 | 5 | 22 | R0.5 | 1.2 | 4.9 | 5.1 |
| MKR5 R0.75 L15 | 50 | 5 | 15 | R0.75 | 1.2 | 4.9 | 5.1 |
| MKR5 R0.75 L22 | 50 | 5 | 22 | R0.75 | 1.2 | 4.9 | 5.1 |
| MKR5 R1 L15 | 50 | 5 | 15 | R1 | 1.2 | 4.9 | 5.1 |
| MKR5 R1 L22 | 50 | 5 | 22 | R1 | 1.2 | 4.9 | 5.1 |
| MKR6 R0.5 L15 | 50 | 6 | 15 | R0.5 | 1.8 | 5.9 | 6.1 |
| MKR6 R0.5 L22 | 50 | 6 | 22 | R0.5 | 1.8 | 5.9 | 6.1 |
| MKR6 R0.75 L15 | 50 | 6 | 15 | R0.75 | 1.8 | 5.9 | 6.1 |
| MKR6 R0.75 L22 | 50 | 6 | 22 | R0.75 | 1.8 | 5.9 | 6.1 |
| MKR6 R1 L15 | 50 | 6 | 15 | R1 | 1.8 | 5.9 | 6.1 |
| MKR6 R1 L22 | 50 | 6 | 22 | R1 | 1.8 | 5.9 | 6.1 |
| MKR8 R0.5 L22 | 60 | 8 | 22 | R0.5 | 2.5 | 7.9 | 8.1 |
| MKR8 R0.75 L22 | 60 | 8 | 22 | R0.75 | 2.5 | 7.9 | 8.1 |
| MKR8 R1 L22 | 60 | 8 | 22 | R1 | 2.5 | 7.9 | 8.1 |
Place the carbide grooving tool firmly in the tool holder. Set the cutting depth according to the required radius. Choose the correct insert size for the groove shape. Use proper cutting speed and feed for each material. Coolant or cutting oil can help improve finish and protect the tool.
Q1: How do I choose the right full radius grooving tool?
A: Select a tool that matches the hole size and the needed radius. Check that the shank fits your CNC holder.
Q2: Can this tool make different radius sizes?
A: Yes. It can cut many radius sizes if you choose the right insert or tool shape.
Q3: What materials can be machined?
A: It works for many metals such as steel, stainless steel, aluminum and cast iron.
Q4: How do I improve tool life?
A: Use steady cutting settings, avoid heavy vibration and apply coolant during cutting.




We will provide you with feedback within 24 hours.