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Solid CBN inserts for hard turning
What Is Solid (Full) CBN Inserts
CBN or PCBN stands for cubic boron nitride, which is formed from hexagonal boron nitride under high temperature and pressure. It is a super-hard material that is second only to diamond in terms of hardness. CBN cutting tools are widely used for the continuous cutting of high-hardness and hard-to-machine materials. Our full and solid CBN inserts work perfectly with the process of “turning replaced by grinding”, which improves the processing quality and efficiency of hard workpiece materials.
What Are Solid CBN Inserts Used For
Solid CBN inserts have a great advantage in processing all ferrous materials, making them the first choice for hard turning of the following materials:
Cast Iron ( Gray Iron, Ductile Iron, Chilled Cast Iron, High Chromium Cast Iron, Alloy Wear-resistant Cast Iron, etc.)
Hard Steel (Harden Steel, Bearing Steel, Die Steel, High Mn Steel, Hig-speed Steel, etc.)
The most typical solid CBN inserts for hard turning
Master the challenge of hard part turning with Sundi’s advanced Solid Cubic Boron Nitride (CBN) inserts. Designed for extreme thermal stability and abrasion resistance, our inserts deliver consistent dimensional accuracy in high-speed machining of High-Chrome Iron and Hardened Steel.
We offer a full spectrum of grades optimized for varying toughness and wear resistance requirements. From the versatile CNGN for profiling to the robust RNGN for heavy facing, our solid inserts provide the structural integrity needed for aggressive machining parameters. Upgrade your production efficiency with tools built for the most demanding industrial applications.
ISO code of solid CBN inserts
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CBN grade and recommend application
| Grade | CBN V% | Ave particle size （μm） | Binder | Hardness（Hv） | Finish/Rough | Continuous/Intermittent processing | Suggest Handling Material | Working material Hardness |
|---|---|---|---|---|---|---|---|---|
| SBN637 | 85-90 | 12 | Al-TiN | 3300-3600 | Finish/Rough | Continuous processing | HSS, cast iron, hardened steel and other difficult processing materials. | HRC45-68 |
| SBN500 | 85-90 | 6-12 | Al-TiN | 3400-3700 | Semifinishing | Continuous processing | HSS, cast iron, hardened steel and other difficult processing materials. | HRC55-68 |
| SBN680 | 85-90 | 17-20 | Al-TiN | 3300-3500 | Rough/ Semifinishing | Both | Gray Cast iron,ductile cast iron, high hard alloy cast iron, high nickel chromium , high cromium cst iron, high manganese steel | HRC45-62 |
| SBN630B | 80-85 | 20-25 | Al-TiN | 3300-3500 | Rough | Intermittent processing | Gray Cast iron,ductile cast iron, high hard alloy cast iron, high nickel chromium , high cromium cst iron, high manganese steel | ≦ HRC60 |
| SBN2080 | 90-95 | 4 | Al-Co | 3500-3700 | Finish | Continuous/ light Intermittent | Gray Cast iron, ductile cast iron, pearlitic cast iron, Ferritic cast iron | ≦ HRC60 |
User Case and Application of Solid (Full) CBN Inserts
Solid CBN inserts For Roller
1.1 x
1.4 x
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Roller
working application
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High Speed Steel
working material
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HSD80-85
Roller hardness
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Finish Machining
Application
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Excircle& Slot
Machine Area
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RC0604-V
inserts selection
Full PCBN inserts For Gear
5.7 x
1.2 x
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driven gear
working application
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20CrMnTiH
working material
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HRC 58-62
Roller hardness
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Finish Machining
Application
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Excircle& End face
Machine Area
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DN 1204
inserts selection
Solid CBN inserts For brake disc
3.3 x
1.3 x
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brake disc
working application
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hardness steel
working material
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HB 190
Roller hardness
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Finish Machining
Application
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Excircle& End face
Machine Area
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CNGX 120712
inserts selection
Why Us
Who we are
The Advantages of Our PCBN Inserts
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Cost Reduction
50-70% cost saving compared with carbide inserts, available for repeated grinding, and a higher utilization ratio
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Great Performance
The first choice for rough, half, and finish turning with continuous, and intermittent processin
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Excellent Surface Finish
Our solid CBN inserts can turn the workpiece instead of grinding, the surface roughness can reach Ra0.4
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High Machining Efficiency
Because of its stable physical properties, the efficiency of PCBN for hard turning is 5-10 times of carbide and ceramic inserts.
trouble shooting list
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Choose the appropriate grade of solid CBN material based on the type of material being processed
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Before use, ensure that the full CBN insert is installed correctly and is compressed in a close-fitting manner to avoid damage caused by unstable pressing and improper positioning.
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When reversing the inserts, ensure that the cutting grooves are clean and that the inserts are properly fitted onto the tool body.
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Check for any deformation or damage to the grooves, gasket, and pressing plate.
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Chamfer the workpiece without CBN inserts before processing.
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Pay attention to the condition of the cutting fluid during hard processing. If any abnormalities are noticed, stop and inspect immediately to avoid unnecessary damage.
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Leave some space for the final processing using other types of tools.
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The machine used for the process should have good rigidity, minimal vibration, and low transmission amplitude.
frequently asked questions for solid cBN Inserts and catalogs
FAQ
Most frequent questions and answers
A: Absolutely. In fact, roughing is a key strength of Solid CBN inserts. Since they are not limited by a carbide substrate, Solid CBN inserts allow for a much larger Depth of Cut (DOC). This enables the removal of significant amounts of hard material in a single pass, drastically improving machining efficiency.
A: During heavy interrupted cutting (such as turning parts with holes or keyways), cutting forces fluctuate drastically.
Brazed inserts risk tip detachment due to the potential weakness of the braze joint (welding seam) under high stress.
Solid CBN inserts feature a uniform, solid structure with no braze lines, offering exceptional impact resistance. This makes them ideal for large stock removal and severe interrupted turning.
Wuxi Sundi Precision Tools Co.,LTD
- +86 18168312921
- +86 18168312921
- +86 18951588639
- info@sundicuttingtools.com
Our team is here to help you! We provide personalized solutions to meet your unique needs. Contact us to learn more.
