32mm Boring Bar DDQNL Left-Hand 25mm Shank 50mm Cutting Height, 107.5° Angle - Teknik Makina

Take advantage of a precise combination of left-hand cutting geometry and stable 25 mm shank support for consistent internal turning results; the S25S DDQNL reduces tool change downtime through indexable inserts compatible with DN-- 1506. Order directly via Metav Werkzeuge or consult the technical team for mounting and insert selection.

S25S DDQNL boring bar — left-hand, 25 mm shank, for DN-- 1506 inserts (Teknik Makina)

S25S DDQNL is a left-hand boring bar designed for turning operations that require reliable insert indexing and rigid clamping; suitable for a range of internal machining tasks in production and jobbing environments

• Left-hand cutting orientation
• 25 mm shank diameter
• Compatible with DN-- 1506 inserts
• 107.5° cutting angle
• 250 mm overall length

Improve machining consistency with left-hand geometry

The left-hand configuration and defined 107.5° cutting angle make this boring bar well suited to applications where chip flow and clearance must be controlled in a specific rotation direction. The tool's geometry supports steady cutting forces and helps to reduce chatter on medium-duty internal turning tasks. By pairing a rigid holder with the correct indexable insert, operators gain a measurable improvement in surface finish and repeatability compared with ad-hoc tool setups. The combination of left-hand cutting and precise insert seating is especially valuable when reversing spindle directions or when adapting fixtures for specialised production runs.

Minimise downtime through indexable insert compatibility

Designed for use with DN-- 1506 indexable inserts (DDQN style), the bar allows rapid index changes and economical reconditioning compared with solid-tool alternatives. The replaceable insert system shortens maintenance intervals and keeps cycle times predictable: a worn corner is rotated or replaced rather than regrinding the entire cutter. This approach reduces per-part tooling cost and ensures consistent cutting geometry, making it an efficient choice for batches and continuous production. Clear identification of the insert style simplifies procurement and stock control for maintenance teams.

Precision clamping and practical dimensions for workshop integration

With a 25 mm shank diameter and 250 mm overall length, the bar fits standard holders designed for this shank size and balances reach with rigidity for reliable bore finish. The cutting height of 50 mm and an external diameter reference of 32 mm define the working envelope and help planners select the correct holder and spindle offset. The tool's mass (approx. 0.935 kg) contributes to a stable feel in the turret while remaining manageable for set-up. These measured specifications facilitate straightforward integration into existing tooling systems and aid in NC-programme setup and repeatability.

Robust workflow benefits and straightforward maintenance

A tool with indexed inserts and standardised shank dimensions supports lean tooling inventories and predictable maintenance procedures. The modular nature of the design reduces the risk of prolonged downtime since inserts are held to known standards and replaced quickly at the machine. Regular inspection of clamping screws and insert seating ensures ongoing performance; when mounted correctly in a matching holder, the boring bar delivers consistent bore accuracy and extended usable life of the cutting edges. The construction supports operators seeking dependable, repeatable results across medium-production environments.

For technical advice on application, holder compatibility or insert selection for the S25S DDQNL, contact Metav Werkzeuge — expert assistance and supply from Emmerich is available by phone or email to support purchase decisions and set-up guidance.

Technical data

• Article number: K533TM
• ISO designation: S25S DDQNL
• Manufacturer: Teknik Cutting Tools / Teknik Makina
• For indexable inserts: DN-- 1506
• SKU: K533TM

Core measurements

• Shank diameter: 25 mm
• Cutting height: 50 mm
• Diameter (head): 32 mm
• Overall length: 250 mm
• Weight: 0.935 kg
• Cutting angle: 107.5°

Special features

• Left-hand cutting orientation
• DDQN for DN-- indexable inserts
• Designed for rapid insert replacement
• Suitable for internal turning applications

FAQ

What insert type fits this boring bar?
The S25S DDQNL fits DN-- 1506 indexable inserts in the DDQN form; selecting the correct insert grade and geometry matches the component material and machining conditions.

Is the boring bar suitable for right-hand and left-hand lathes?
The tool is manufactured with a left-hand cutting configuration; use on a lathe must match the intended spindle rotation and holder orientation to ensure correct cutting action.

What are the key mounting dimensions to check before ordering?
Confirm the holder accepts a 25 mm shank and that the 250 mm overall length and 50 mm cutting height fit the turret envelope; these dimensions determine clearance and rigidity when mounted.

How does the design affect maintenance and downtime?
The use of indexable inserts (DN-- 1506) and standard shank dimensions reduces downtime because worn corners are indexed or replaced quickly, keeping the production line running with minimal tool changes.

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