24mm Drilling Bar S20Q STIR STI For IR/ER Indexable Inserts 40mm Cutting Height, 20mm Shank Diameter - Teknik Makina

Take advantage of the combination of compact design, precise dimensions and compatibility with standard indexable inserts to reduce overhang, improve surface finish and keep clamping reliable; order the tool through Metav Werkzeuge or contact our consultants for application advice.

S20Q STIR boring bar — STI for IR/ER indexable inserts (right-hand)

S20Q STIR is a right-hand boring bar designed for internal turning with IR/ER indexable inserts, suited to workshops and production lines requiring stable clamping and predictable chip control

• Right-hand boring bar for IR/ER indexable inserts
• 24 mm head diameter, 20 mm shank
• 180 mm overall length, 40 mm cutting height

Precision that reduces vibration and improves surface finish

The bar’s compact 180 mm overall length and reduced overhang support a more stable cutting setup, which directly lowers vibration and enhances surface quality. The combination of a 20 mm shank and a 24 mm head diameter helps maintain rigidity in the holder; this is particularly beneficial for internal turning where overhang can compromise tolerances. Fewer vibrations mean longer life for inserts and smoother production runs, which translates into less rework and improved first-pass yield.

Built for standard indexable inserts and straightforward handling

Compatibility with IR/ER indexable inserts — specified here as 22 IR — allows fast insert changes and consistent seating in the clamping system. The tool’s ISO designation S20Q STIR signals standardised interfaces, making it straightforward to match with existing clamping holders such as the IR22 designation. Right-hand cutting orientation supports conventional turning operations and predictable chip flow, simplifying programming and setup on conventional lathes and multi-tasking machines.

Practical dimensions and balanced weight for workshop efficiency

The tool’s 40 mm cutting height provides sufficient engagement for typical internal turning tasks while keeping the assembly compact. At approximately 0.431 kg, the bar offers an advantageous balance between mass and manoeuvrability, aiding quick tool changes without compromising stability. These tangible dimensions support predictable run-out and repeatability, making the component a pragmatic choice for production environments that prioritise uptime and consistent part quality.

For recommendations on integrating the S20Q STIR into existing toolholders, or to secure supply from Metav Werkzeuge, contact Metav Werkzeuge for tailored advice and dependable delivery from Emmerich

Technical Data

• Article number: K358-1TM
• SKU: K358-1TM

Facts

• Diameter: 24 mm
• Shank diameter: 20 mm
• Cutting height: 40 mm
• Overall length: 180 mm
• Weight: 0.431 kg
• Cutting direction: right

Special features

• ISO designation: S20Q STIR
• Compatible inserts: 22 IR
• Clamping holder designation: IR22
• Intended for IR/ER indexable inserts

FAQ

What inserts are compatible with this boring bar?
The bar is compatible with IR/ER indexable inserts, specifically suited to the 22 IR insert format used with the S20Q STIR (SKU K358-1TM).

Is the cutting orientation right-hand or left-hand?
This tool is made for right-hand cutting, which matches standard turning directions on most lathes and multi-tasking centres.

Which clamping holder fits the bar?
The bar is specified alongside clamping holder designation IR22, enabling secure seating and repeatable clamping.

Can the S20Q STIR be used in high-speed applications?
Performance at high spindle speeds depends on machine setup and insert grade; the S20Q STIR provides a rigid platform that supports higher-speed cuts when paired with suitable inserts and correct clamping.

What are the key dimensions to check before ordering?
Verify the 24 mm head diameter, 20 mm shank, 180 mm overall length and 40 mm cutting height to ensure compatibility with the toolholder and the available machine envelope.

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