54mm Boring Bar Holder E2 S, Through‑Bored VDI40 20mm, DIN 69880 - TECWERK

Take advantage of a combination of vibration-reducing clamping, a through-drilled Type A shank and VDI40 compatibility for reliable boring operations; order directly via Metav Werkzeuge or consult our specialists for application advice.

TECWERK Tool Holder for Boring Bars (VDI40, Type A, E2 S) — Clamping d2 20 mm, DIN 69880

The TECWERK tool holder designed to secure boring bars with a slotted E2 S clamp for reduced vibration and coolant-ready machining on VDI40 turrets.

• Slotted E2 S design reduces vibration
• Through-drilled Type A shank for coolant
• Suitable for full-round bars with V-groove
• Secured in turret by retaining ring

Stable clamping that improves finish and tool life

The slotted E2 S clamp wraps around the boring bar to reduce vibration, producing a more consistent surface finish and extending cutter life. Built to the DIN 69880 standard and mating with a VDI40 interface, this holder features a clamping diameter of 20 mm (d2) and a main body diameter of 54 mm, providing a stable connection between turret and tool. The Type A, through-drilled configuration keeps the shank ready for internal coolant channels and simple length setup; the result is higher process reliability and fewer rejected workpieces. For shops that measure productivity by first-time-right parts, this holder delivers measurable gains in consistency.

Coolant-ready layout for flexible machining strategies

A through-drilled shank enables both external and internal cooling, allowing coolant to reach the cutting zone efficiently and supporting longer cutting cycles. The shaft is designed so length adjustment can be performed from the shank side if the holder is through-drilled, simplifying set‑up without removing the holder from the turret. Internal coolant flow assists chip evacuation and temperature control, which reduces thermal expansion of the tool and workpiece and helps maintain tolerances. In short, the holder’s coolant-ready design supports uninterrupted machining and helps protect the cutting edge during extended operations.

Secure mounting and broad compatibility for workshop use

The holder is suitable for full-round boring bars with V-groove, making it compatible with common bar profiles used in heavy-duty and finishing applications. A retaining ring secures the holder against falling into the revolver, a practical safety feature for automated or multi-station turret setups. Key interface dimensions — d1 40 mm, L 95 mm, L1 73 mm — ensure predictable fitment across VDI40 systems. The slotted clamp is dimensioned for effective bite: slotted areas are specified according to bar diameter to ensure a repeatable hold during radial and axial cutting forces.

Practical benefits in everyday production

For small to medium workshops and production cells alike, the holder reduces set-up time, minimises vibration-related scrap and supports higher metal removal rates when paired with appropriate boring bars. The slotted design, combined with through-drilled capability, offers a balance between rigidity and coolant access, which is particularly valuable in finishing passes where surface integrity matters. As a discrete component within a tooling system, this holder contributes to lower tool-change frequency and steadier cycle times, helping maintain throughput without compromising accuracy.

For precise boring with reduced vibration and coolant-ready performance, contact Metav Werkzeuge for tailored advice and ordering: info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: 2000833489NW
• Brand: TECWERK
• Product type: Tool holder for boring bars
• Standard: DIN 69880
• Type: A
• Form: E2 S
• Through-drilled: yes

Dimensions & measurable data

• Diameter D: 54 mm
• Clamping diameter d2: 20 mm
• d1: 40 mm
• Overall length L: 95 mm
• Length L1: 73 mm

Special features

• Slotted execution (E2 S)
• Reduces/prevents vibration by wrapping around bar
• Suitable for full-round boring bars with V-groove
• Secured against falling out in turret by retaining ring
• Slotted clamping lengths: up to 16 mm = 4×D, 20 & 25 mm = 3×D, ≥32 mm = 2.5×D
• External and internal cooling possible
• Length adjustment from shank side when through-drilled

FAQ

What interface standard does this holder use and which turret size fits?
The holder is designed for a VDI40 interface and complies with DIN 69880, making it compatible with turrets accepting VDI40 tooling.

Can the holder deliver coolant internally and externally?
Yes — the through-drilled Type A shank supports both external and internal cooling, enabling coolant delivery directly to the cutting zone.

Is the holder suitable for solid boring bars without flats?
The holder is suitable for full-round boring bars with a V-groove; the slotted clamp also accommodates bars designed for VDI-style retention.

How does the slotted E2 S design affect vibration and surface finish?
The E2 S slotted clamp wraps around the bar to dampen chatter, which improves surface finish and reduces tool wear during finishing operations.

What prevents the holder from falling into the turret during tool changes?
A retaining ring secures the holder in the turret, preventing it from dropping into the revolver during indexing or machining.

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