UHD CBN grooving inserts are developed for narrow grooves, end-face grooves, and circlip grooves in hardened steel, bearing steel, cast iron, and other difficult-to-machine materials. In interrupted bearing groove cutting, the main objective is not only material removal, but also controlled edge integrity, groove-width consistency, burr formation, and tool-change frequency.
With a dedicated locking structure, micro-tip design, and groove-forming geometry, UHD supports semi-finishing and finishing operations where cutting interruptions and small groove dimensions can increase the risk of edge chipping. Actual performance depends on the workpiece material, hardness, groove geometry, machine rigidity, clamping, cutting parameters, and on-site validation.
Bearing circlip grooves and similar narrow grooves often combine limited cutting space with repeated tool entry and exit. When the cutting edge is exposed to intermittent contact, impact loads can concentrate at the micro-tip and weaken the stability of the cutting process.
Frequent cutting entry and exit can create impact at the tool tip, particularly when the groove intersects an uneven or interrupted surface.
Narrow grooves leave less room for chip control and make tool alignment, clamping, and dimensional control more critical.
Hardened steels and bearing steels can increase cutting resistance and amplify the effect of unsuitable geometry or unstable setup conditions.
UHD approaches interrupted groove cutting through the coordinated selection of insert geometry, tip structure, locking method, and application conditions. The insert is intended to help make the cutting process more predictable rather than to replace the need for correct machine setup and parameter validation.
A practical tool evaluation should consider more than the number of parts machined. For CBN grooving inserts, edge condition, groove consistency, burr formation, and tool-change frequency provide a clearer basis for comparing cutting stability.
| Evaluation item | What to observe | Why it matters |
|---|---|---|
| Edge integrity | Micro-chipping, larger edge fractures, or progressive wear | Indicates whether the insert remains stable under repeated interruption |
| Tool life | Machining duration, part count, and condition at tool change | Supports a realistic assessment of replacement frequency and production continuity |
| Groove-width consistency | Variation in groove width, depth, and profile | Helps protect assembly, retaining, and functional requirements |
| Burr formation | Burr size, location, and need for secondary finishing | Shows the potential effect on rework, deburring, and overall process cost |
| Tool-change frequency | Planned versus unplanned insert replacement | Links insert stability with production scheduling and process control |
Hardened steel, bearing steel, gear steel, tool steel, grey cast iron, ductile iron, and powder metallurgy materials.
Semi-finishing and finishing of narrow grooves, end-face grooves, circlip grooves, oil grooves, and other specified groove profiles.
Bearing components, gears, automotive parts, compressor cylinders, transmission shafts, and related precision-machined components.
Hardness reference: The insert can be considered for hardened-material groove cutting in approximately the HRC 58–62 range. Suitability must be confirmed against the specific material grade, groove geometry, machine condition, clamping method, and cutting parameters.
The insert is suitable for standard CNC grooving equipment and CNC lathes when the holder and workpiece setup meet the requirements of the operation. Stable installation is especially important when cutting interrupted bearing grooves.
For non-standard circlip groove or special groove applications, UHD can review the following information to support insert selection and design coordination:
Yes. UHD CBN grooving inserts are designed for bearing circlip grooves and other narrow groove features in hardened steel and bearing steel. The final insert specification should match the groove dimensions, workpiece hardness, interruption level, and machine setup.
Evaluate edge integrity, visible chipping, groove-width consistency, burr formation, machined part count, and planned versus unplanned tool changes. These observations should be made under controlled and clearly recorded cutting conditions.
UHD supports non-standard CBN grooving insert coordination based on groove width, groove depth, groove location, special profiles, tolerances, tool-holder interface, and the required cutting condition.
No. They are intended primarily for high-hardness and difficult-to-machine applications. They are not recommended for aluminium, copper, other materials prone to adhesion, low-carbon soft steel, or very large and deep heavy-duty grooves without a technical suitability assessment.
Henan UHD Ultrahard Tools Co., Ltd. is an integrated manufacturing and trading company specializing in ultrahard cutting tools and customized machining solutions. With CBN and diamond material research capabilities, digitalized manufacturing, precision 3D optical inspection, edge-treatment and structural optimization support, UHD supplies CBN grooving inserts, CBN inserts, PCD tools, formed tools, and non-standard solutions for customers in automotive, bearing, gear, compressor, wind power, engineering machinery, and other manufacturing sectors.
For a reliable selection, provide the workpiece drawing or groove parameters together with material hardness, interruption characteristics, machine type, holder interface, and production requirements. UHD can then support a more appropriate evaluation of edge chipping risk, groove consistency, burr control, and tool-change planning.
Tell us your workpiece, quantity, and tooling requirement. Our team will reply with a practical solution.
