46mm Tool Holder E2 S for Boring Bars Through‑Bored VDI40 12mm, DIN 69880 - TECWERK

Take advantage of the combination of slotted clamping for vibration reduction, a through‑bored shaft for coolant flexibility and secure retention by a safety ring to maintain consistent tool performance. Order the TECWERK VDI40 toolholder directly via Metav Werkzeuge or consult our specialists for technical clarification and procurement.

TECWERK VDI40 toolholder for boring bars — clamping Ø12 mm, Type A

A TECWERK VDI40 toolholder designed for slotted clamping of boring bars; suitable for precision turning and boring where reduced vibration and flexible coolant supply are required.

• Slotted clamping reduces vibration and chatter
• Through‑bored shaft allows internal coolant
• Secured by retaining ring, prevents falling out
• Compatible with VDI40 interface and Ø12 mm bars

Improved machining stability through slotted clamping

The slotted, E2 S form of the holder provides a controlled wrap around the boring bar, which significantly reduces vibration and chatter during cutting. This mechanical restraint is especially beneficial for long overhangs and finish-critical operations, because fewer vibrations translate directly into better surface integrity and extended insert life. The design is compatible with full‑round bars with a V‑groove as well as notched bars, enabling a consistent clamping force and predictable performance across a range of setups.

Flexible coolant routing and accessible length adjustment

A through‑bored shaft permits both internal and external coolant supply, improving chip evacuation and cooling at the cutting edge for longer tool life and more stable cutting conditions. The holder also supports length adjustment from the shank side when the shaft is through‑bored, which simplifies setup changes and reduces spindle removal time. For workshops seeking reduced cycle times, the combination of coolant flexibility and accessible adjustment supports higher productivity without compromising machining quality.

Secure retention and standardised interface for fast tool changes

The holder is delivered with a retaining ring to secure the boring bar and prevent accidental ejection into the turret, enhancing operator safety and machine uptime. With a VDI40 interface and compliance with DIN 69880, the unit integrates seamlessly into standard turret systems, allowing rapid interchangeability. The specified clamping diameter of 12 mm and a shank diameter of 40 mm make it suitable for many conventional boring bar ranges used in industry.

Practical workshop benefits and compatibility notes

Constructed in the E2 S configuration and drilled through where feasible, the holder supports efficient maintenance and cleaning, while the slotted section is dimensioned for standard insertion depths (e.g., up to 16 mm at 4×D, 20 and 25 mm at 3×D, from 32 mm at 2.5×D). The adherence to DIN 69880 guarantees interchangeability and reduces the risk of mismatched components on the shop floor. For operations processing medium‑run parts or requiring reliable repeatability, the design helps to lower rework rates and improve overall process stability.

For procurement or detailed technical advice on the TECWERK VDI40 toolholder (SKU 2000833487NW), contact Metav Werkzeuge for expert guidance and prompt supply.

Technical data

• Article number: 2000833487NW
• Product type: Toolholder for boring bars
• Brand: TECWERK
• Standard: DIN 69880

Facts

• Diameter D: 46 mm
• Overall length L: 95 mm
• L1: 73 mm
• Clamping diameter d2: 12 mm
• d1: 40 mm

Special features

• Form: E2 S
• Through‑bored: yes
• Slotted clamping for vibration reduction
• Secured with retaining ring to prevent ejection
• Suitable for full‑round boring bars with V‑groove
• External and internal coolant compatible
• Length adjustment from shank side possible

FAQ

Is this holder suitable for internal coolant supply? Yes. The TECWERK VDI40 toolholder is through‑bored and supports internal coolant routing as well as external coolant supply.

Which bar diameters and profiles are compatible? The holder is specified for a clamping diameter of 12 mm and accommodates full‑round boring bars with a V‑groove as well as slotted bars in the corresponding Ø range.

Does the holder fit standard VDI turrets? Yes. The interface complies with DIN 69880 and is configured for the VDI40 turret standard.

How does the slotted design affect vibration? The slotted E2 S configuration wraps the bar and reduces free span movement, which lowers vibration and improves surface finish and tool life.

What prevents the boring bar from falling out during turret indexing? A retaining ring secures the bar in the holder, preventing ejection into the turret during indexing or tool changes.

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