59mm Boring Bar Holder E2 S Reduced Vibration, DIN 69880 - TECWERK

Compact VDI30 holder with a 25 mm clamping diameter and a slotted wrap that reduces vibration for stable boring. Built to DIN 69880 as Form E2 S, Type B ensures secure seating and retention in turret-mounted operations. Order the tool holder directly via Metav Werkzeuge or ask our consultants if needed.

TECWERK Tool holder for boring bars (Type B, Form E2 S) — VDI30, Clamping Ø25 mm

The TECWERK Tool holder for boring bars is a VDI30-mounted, slotted toolholder designed for secure clamping of boring bars in turret systems, optimised to reduce chatter in medium‑duty machining.

• VDI30 mount for standard turret systems
• Clamping diameter 25 mm for round bars
• Slotted wrap reduces vibration and chatter
• Secured with retaining ring; external coolant-ready

Consistent clamping and reduced vibration for precision boring

The holder provides consistent clamping with a defined clamping diameter 25 mm, delivering repeatable axial and radial positioning for boring operations. Its slotted design encircles the bar and reduces vibration, which helps to stabilise the cutting process and improve bore finish. Designed for turret applications, the VDI30 interface ensures straightforward integration with common machine tool systems, so cycle reliability and tool runout are improved without trial-and-error setup.

Production-ready dimensions and standard compliance

With a body diameter of D 59 mm and an overall length of L 112 mm (L1 90 mm usable), the holder is compact yet robust for workshop use. The toolholder meets DIN 69880 as Form E2 S and is supplied as Type B, which is not through-drilled; this means internal coolant is not available on this variant and external coolant is recommended for chip evacuation and tool life. The design includes a retaining ring that secures the bar and prevents disengagement from the turret, reducing the risk of tool loss during index cycles.

Practical guidance for selection and operation

The slotted section is dimensioned to industry practice: for smaller bars (≤16 mm) the effective slot length is around 4×D, for 20–25 mm bars about 3×D and for larger diameters approximately 2.5×D; this ratio supports stable clamping without over‑constraining the shank. The holder is suitable for full‑round bars with a V‑groove, enabling a secure bite where required. If internal cooling or a through‑shaft length adjustment is necessary, consider a through‑drilled variant; the non‑through‑drilled Type B is optimised for secure clamping and external coolant applications. For questions about fit or compatibility with specific boring bars and turret noses, Metav’s technical advisors are available by email or phone to assist with selection and integration.

Contact Metav Werkzeuge today to confirm suitability for a specific application or to request tailored advice from our precision tooling specialists.

Technical data

• Article number: 2000833479NW
• Product type: Werkzeughalter für Bohrstangen
• Type: B
• Form: E2 S
• Standard: DIN 69880

Facts

• D: 59 mm
• L: 112 mm
• L1: 90 mm
• d2 (clamping): 25 mm
• d1: 30 mm

Special features

• VDI30 turret interface
• Slotted wrap design to reduce vibration
• Secured against falling out with retaining ring
• Suitable for full-round bars with V-groove
• Type B = not through-drilled (external coolant recommended)

FAQ

What is the clamping diameter of this holder?
The TECWERK tool holder for boring bars (Type B, Form E2 S, SKU 2000833479NW) has a clamping diameter of 25 mm.

Can this Type B holder be used with internal coolant?
No; the Type B variant is not through‑drilled, so internal coolant is not available on this holder. External coolant is recommended for chip control and cooling.

Which turret interface does the holder use?
The holder uses a VDI30 interface, compatible with standard VDI turret systems.

Which dimensions are relevant for installation in the turret?
Key dimensions are D 59 mm, L 112 mm, and L1 90 mm; the holder also presents a tool shank connection of d1 30 mm and the clamping bore d2 25 mm.

How does the slotted design improve boring results?
The slotted wrap reduces chatter by allowing the holder to grip the bar more uniformly and to damp vibrations, improving surface finish and extending tool life.

Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund