32mm Drilling Bar S25S MWLNR For WN-- 0804 Indexable Inserts, 95° Cutting Angle, 250mm - Teknik Makina

Take advantage of a rigid, ISO‑specified tooling solution that combines stable clamping, compatibility with standard indexable inserts and consistent performance across repetitive turning tasks — order directly via Metav Werkzeuge or consult the technical team for application advice.

K428TM Boring Bar (S25S MWLNR) – right‑hand, for WN-- 0804 indexable inserts, 25 mm shank

The K428TM is a right‑hand boring bar intended for turning operations with WN-- 0804 indexable inserts, providing a compact toolholder for medium‑depth internal and external turning tasks

• Right‑hand boring bar for turning operations
• Accepts WN-- 0804 indexable inserts
• 25 mm shank diameter for stable clamping
• 250 mm overall length for deeper reach

Consistent rigidity and geometry for repeatable finishing

The design centres on a 25 mm shank that delivers dependable clamping rigidity, reducing vibration and improving surface results during repeated cycles. With the S25S MWLNR ISO designation, the toolholder conforms to widely used tooling standards, which simplifies integration with existing setups and shortens changeover times. The defined 95° cutting angle helps maintain predictable chip flow and tool engagement, supporting consistent dimensional accuracy and lower rework rates.

Flexible insert compatibility for varied turning tasks

Compatibility with WN-- 0804 inserts and the MWLN insert type allows straightforward selection of grades and coatings for specific materials. The cutter’s 45 mm cutting height supports a stable insert seat, which contributes to predictable wear behaviour and extended insert life when paired with appropriate grades. Right‑hand cutting orientation offers clear toolpath planning for conventional lathe setups, enabling effective finishing passes without compromise to feed control.

Reach and balance tailored to workshop efficiency

At a 250 mm overall length, the boring bar combines reach with a compact profile that reduces overhang and preserves balance during operation. The assembly’s mass (approx. 0.945 kg) is optimised to avoid unnecessary inertia while still offering tactile stability on the toolpost. This balance supports safer, more precise movement in medium‑depth bores and external facing tasks, reducing manual adjustments and downtime between setups. For bespoke applications or uncertainty about fitment, in‑house specialists can advise on clamping adapters and holder compatibility.

For application guidance or to specify tooling for a particular machining task, contact Metav Werkzeuge — our consultants provide practical advice from Emmerich and can recommend the correct holder and insert pairing for reliable results.

Technical Data

• Article number: K428TM
• Manufacturer: Teknik Makina
• SKU: K428TM

Facts

• Shank diameter: 25 mm
• Overall length: 250 mm
• Cutting height: 45 mm
• Weight: 0.945 kg
• Diameter: 32 mm
• Cutting angle: 95°

Special features

• Compatible inserts: WN-- 0804
• ISO designation: S25S MWLNR
• Cutting direction: right
• Suitable for: MWLN for WN-- indexable inserts
• Clamping holder designation: 08

FAQ

Which inserts fit this boring bar?
The K428TM is intended for WN-- 0804 indexable inserts and supports the MWLN insert form for reliable seating and exchange.

What are the key dimensions to check for holder compatibility?
Key dimensions are a 25 mm shank diameter, 250 mm overall length and a cutting height of 45 mm; these determine clamp fit and effective reach for the K428TM boring bar.

Is the cutting direction suitable for common lathe setups?
Yes, the tool is manufactured for right‑hand cutting and a 95° cutting angle, matching conventional lathe orientations for typical turning operations.

Does the tool conform to an ISO designation?
The boring bar carries the S25S MWLNR ISO designation, facilitating compatibility with standardised holders and simplifying tool selection.

Manufacturer: Teknik Cutting Tools, Buyukkayacık OSB Mah.422 Nolu Sokak.No:9, Selcuklu/KONYA/TURKEY / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; eMail: info@metav-werkzeuge.com