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Lizhou Cemented Carbide PBWR Internal Groove Cutter – Small-Diameter Groove Cutter Solution
time：
2026-02-04 13:26
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Lizhou
What is a groove cutter?
Slotting cutter It is a cutting tool used to machine grooves on workpieces. Its primary function is to cut grooves of specified width and depth on external circles, internal bores, or end faces. It is commonly used in lathes and CNC lathes. We can think of groove-cutting tools as specialized tools designed specifically for creating grooves and channels.
The characteristics of groove knives are: narrow blades, concentrated cutting action, and high demands for strength and chip removal. Compared to conventional cutting tools, they offer greater stability and improved resistance to fracture. Groove knives typically feature a indexable blade design, making blade replacement convenient and well-suited for mass production.
What materials can grooving tools primarily process?
General groove cutters are typically used for machining keyways, retaining ring grooves, and end-face grooves on shaft-type parts. Cutting tools essentially also rely on specialized groove cutters.
What’s the difference between a grooving tool and a conventional turning tool?
Ordinary cutting tools are primarily used for external rounding and end faces. As for groove-cutting tools, their blades feature narrow, straight cutting edges specifically designed for narrow grooves. Groove-cutting tools have a smaller cutting space and thus place higher demands on both strength and chip removal performance.
Why are grooving tools prone to breakage?
Due to the narrow cutting space, thin blade, concentrated cutting forces, difficult chip removal, and susceptibility to vibration, this process places high demands on machining parameters and cooling conditions.
What are the major advantages of boring tools?
Small aperture, deep groove
In the machining of precision components, internal bore grooving has always been one of the most challenging and risky processes. The bore diameters are small, the groove depths are significant, and the space available is severely limited. Even a slight loss of stability can lead to tool vibration, chipping, dimensional deviations, or even outright tool breakage. That’s why more and more manufacturers are increasingly opting for carbide end mills with small diameters specifically designed for internal bore grooving.
Small-diameter machining
PBWR The internal groove cutter is specifically designed for machining tiny internal bores. It is primarily used to create circular grooves, sealing grooves, and relief grooves in small-diameter holes—making it particularly well-suited for applications that demand extremely high dimensional accuracy, surface quality, and stability.
Blade edge bevel design
In terms of blade edge design, PBWR By adopting an inclined cutting edge geometry combined with a properly designed rake angle, the cutting action becomes sharper and smoother, effectively reducing cutting resistance and vibration. This is particularly crucial in machining small-diameter internal holes—allowing not only a reduction in tool load but also a significant improvement in the surface quality of the groove bottom and groove walls.
Precisely because of these advantages, PBWR Internal groove cutting tools are widely used in high-end manufacturing sectors such as aerospace, precision machine tools, mold making, and powertrain systems. They are particularly well-suited for mass production and precision machining applications that demand extremely high stability and consistency.
Lizhou Tools has always been focused on providing solutions for highly challenging cutting applications. Through its stable and reliable groove cutter products, we help customers achieve more stable cutting, higher efficiency, and more controllable quality in precision hole machining.
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