BM07 Internal Boring Bar R/LBM07.093.02.10 For Small Holes

The BM07 internal boring bar R/LBM07.093.02.10 is a small‑hole boring tool designed for internal turning on CNC and Swiss‑type lathes. It processes steel, stainless steel, cast iron and non‑ferrous components starting from a minimum bore size of 10 mm. Its rigid shank and 18‑degree lead angle deliver stable finishing and semi‑finishing performance inside confined bores.

The R/LBM07.093.02.10 belongs to the BM07‑series internal boring bar, built for enlarging and finishing pre‑drilled holes on turning centers and sliding‑head lathes. It solves common machining issues such as poor surface finish and tool chatter that occur in deep small‑diameter bores, where long tool overhang easily causes deflection. This boring bar features a 07 mm insert seat and is available in right‑hand and left‑hand versions to match different machine turret settings and part geometries.

Structure and Material

This boring bar adopts standard BM07 steel shank with carbide‑reinforced boring head, which provides high bending stiffness under 10 mm body diameter. The 18‑degree lead angle and 0.2 mm nose radius form a continuous cutting edge to resist vibration during light boring operations. Key dimensions including 1.8 mm maximum depth of cut and 9.1 mm functional length are sourced directly from the official catalog for accurate tool selection.

Coating and Performance

This tool supports TA51 and TD51 carbide grades specified in the catalog. TA51 is a general‑purpose coated carbide grade, suitable for steel, alloy steel, stainless steel and cast iron under moderate cutting speeds. TD51 coated carbide works well for stainless steel and can also be applied to titanium and high‑temperature alloy workpieces. Users can select the proper grade according to actual workpiece material.

Applicable Workpiece Materials According to BM‑series cutting data from the catalog, this boring bar covers multiple material groups: P group for carbon and alloy steel, M group for ferritic, austenitic and super‑austenitic stainless steel, K group for grey, nodular and malleable cast iron, and N group for non‑ferrous aluminum and copper alloys. For titanium and high‑temperature alloys in S group, please choose TD51 grade and reduce cutting speed accordingly.

Machining Application

It is applied for internal finishing and semi‑finishing boring for bores above 10 mm.

Recommended cutting speed ranges from 40‑80 m/min for steel parts, and 40‑60 m/min for stainless steel parts, with feed rate set between 0.03‑0.15 mm per revolution following BM‑series cutting parameters. High‑pressure internal coolant is recommended to reduce machining passes and improve chip removal for deep hole processing.

Equipment Compatibility

This boring bar matches BM07‑series holders with 07 mm insert seat such as BMB07.A16.16 and adopts DCONMS 07 mm shank interface. It can be installed on CNC turning centers, Swiss‑type sliding‑head lathes and precision lathes supporting BM07 small‑hole tooling system. It is not a universal tool and must be used together with matched BM07 holder and inserts.

Quality and Supply

Catalog stock indicator: in‑stock for both TA51 and TD51 versions. All dimensions and carbide grades comply with official catalog drawings. Minimum order quantity, packaging and delivery lead time are not listed in catalog and need manual confirmation in backend before release.

Product Parameters

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