Description
Product Overview
The Mitsubishi DiaEdge FSTU210R is a high-precision indexable boring bar built for internal turning and fine boring operations where surface finish and dimensional accuracy are non-negotiable. Designed for use with TPMT-style inserts, this is a production-grade tool that earns its place in any serious CNC lathe setup or manual toolroom application where a quality boring bar makes the difference between a job that passes gauge and one that doesn’t.
- Solid steel boring bar shank with precision-ground body — The ground shank ensures concentricity when seated in the tool post or boring bar holder, minimising runout at the cutting edge. On a boring bar, every tenth of runout at the shank translates directly to size variation in the bore — this matters when you’re chasing a H7 fit.
- TPMT insert pocket geometry (right-hand orientation) — The FSTU210R uses TPMT triangular inserts, a proven geometry for fine boring where positive rake and sharp edges are needed for clean, chatter-free cuts in steel, aluminium, and cast materials. Triangular inserts give you three usable cutting edges per insert, keeping your cost-per-edge low.
- Indexable insert clamping with Torx/hex screw retention — Screw-on clamping keeps the insert securely seated under interrupted cuts and provides consistent re-indexing without disturbing your bore diameter — critical when you’re finish boring to a tolerance and need confidence that re-indexing won’t walk your size.
- Compatibility / accessory note — Accepts TPMT090208 series inserts (triangular, 9.525 mm IC). The included Tungaloy TPMT090208-PSS inserts are a matched, brand-name choice suited to this bar. An Allen/Torx key is required for insert changes — included in this listing. Compatible with standard boring bar holders and tool posts accepting the bar’s shank diameter.
- Ideal for — Fine boring to close tolerance on CNC and manual lathes; single-point boring of bearing housings and bush bores to H6/H7 fits; finish passes on through-bores in steel and aluminium where a reamer won’t do the job; small-diameter internal turning where a standard TCMT/CCMT holder won’t reach.
Condition
Used (Like New / Minimal Use)
This boring bar presents in excellent condition consistent with minimal or light use. The shank surfaces are clean, free from dings, and show no signs of fretting or clamping damage that would indicate hard service. The insert pocket and clamping screw seat are in good order with no visible chipping, cracking, or deformation to the seating face. The cutting geometry is intact. There is the normal, very light surface patina you’d expect on a used steel tool, but nothing that would raise concern about the precision ground surfaces or the tool’s ability to hold position in a holder. The included Tungaloy TPMT090208-PSS inserts are presented as new in a sealed packet — these are ready to index straight onto the bar. As with any used precision boring bar, it is good practice to verify the shank runout in your tool post before committing to a finish pass; a quick check against a known bore or a test cut in a sacrificial piece will confirm the tool is performing to your expectations before you run it on a critical job.
Included
- 1 x Mitsubishi DiaEdge Boring Bar FSTU210R (right-hand, TPMT insert style)
- 1 x New pack of Tungaloy TPMT090208-PSS indexable inserts
- 1 x Insert clamping key (Allen/Torx — as pictured)
- Original packaging
Not Included
- Boring bar holder / tool post (sold separately)
- Additional insert packs beyond those listed above
Brand Information
Mitsubishi Materials DiaEdge is the cutting tools division of Mitsubishi Materials Corporation, one of Japan’s foremost manufacturers of precision carbide tooling, indexable inserts, and solid carbide end mills. DiaEdge tooling is manufactured to Japanese industrial standards with the tight tolerances and consistent substrate quality that put it squarely in the same tier as Kennametal, Sandvik Coromant, and Tungaloy — tools that belong in production environments and serious toolrooms, not just hobby shelves. Japanese country of origin is a meaningful quality signal here: carbide grade consistency, pocket geometry accuracy, and coating adhesion are all held to standards that translate directly to predictable tool life and repeatable cutting performance.
Specifications
| Feature | Specification |
|---|---|
| Brand | Mitsubishi Materials — DiaEdge |
| Model | FSTU210R |
| Type | Indexable Internal Boring Bar — Right Hand |
| Insert Style | TPMT (Triangular, positive rake, screw clamp) |
| Compatible Insert Size | TPMT090208 series (9.525 mm IC, triangular) |
| Included Inserts | Tungaloy TPMT090208-PSS (new, sealed pack) |
| Shank / Bar Material | Alloy steel, precision ground |
| Hand of Cut | Right hand (R) |
| Country of Origin | Japan |
| Condition | Used (Like New / Minimal Use) |
| Included Items | Boring bar, Tungaloy TPMT090208-PSS inserts (new), clamping key, original packaging |
| Not Included | Boring bar holder, additional insert packs |
Keywords
Mitsubishi DiaEdge FSTU210R, Mitsubishi boring bar, DiaEdge indexable boring bar, TPMT boring bar, internal boring bar CNC lathe, fine boring bar Australia, TPMT090208 insert holder, Tungaloy TPMT insert, boring bar toolroom, indexable boring bar lathe, precision boring bar machining centre, Japanese boring bar tooling
