11mm NC Machine Reamer DIN 212-3 H7 Form B HSS-Co Right-Hand - TECWERK

Take advantage of the combination of HSS‑Co wear resistance, H7 tolerance accuracy and spiral‑fluted geometry to secure consistent fits and reduced rework. Purchase supply and application advice via Metav Werkzeuge or request guidance from our consultants for integration into NC machining cells.

TECWERK NC machine reamer DIN 212-3, H7, Form B, Ø11 mm, HSS‑Co

The TECWERK NC machine reamer DIN 212-3, H7, Form B, 11 mm, HSS‑Co is a spiral‑fluted, left‑hand‑helix reamer designed for high‑precision finishing of blind and through holes in steel, GGG and non‑ferrous metals

• HSS‑Co construction for greater durability
• Tolerance H7 for precision fits
• Spiral flutes with left‑hand helix
• Cylindrical shank and unequal flute spacing

Achieve repeatable fits with hardened high‑speed cobalt construction

The combination of HSS‑Co material and a tight H7 tolerance delivers a tool that consistently produces precision fits with minimal scrap. The cobalt alloy increases hot‑hardness and wear resistance, so the reamer maintains its cutting geometry over longer production runs; this supports measurable productivity gains and fewer tool changes. When used in conjunction with high‑precision clamping systems, the result is improved runout accuracy, which directly reduces rejects and rework.

Versatile machining for steel, cast iron and non‑ferrous alloys

Engineered for both through and blind holes, the tool is suitable for machining steel, GGG (spheroidal graphite cast iron) and non‑ferrous metals. The spiral‑fluted design evacuates chips efficiently during reaming, helping to preserve the finished surface and dimensional stability. This makes the cutter a practical choice for mixed‑material batches and small to medium series where surface finish and hole tolerance are critical.

Design features that reduce vibration and improve surface finish

The reamer’s spiral flutes and unequal flute spacing minimise harmonic vibrations and deliver a steadier cutting action compared with evenly spaced geometries. A cylindrical shank ensures stable gripping in standard holders while Form B geometry supports consistent cutting engagement across the bore. The tool’s right‑hand cutting with a left‑hand helix is optimised to control chip flow and to avoid chatter in NC applications, thereby improving surface quality and dimensional repeatability.

Integrating the tool into NC production for process security

For the highest levels of process stability, pairing this NC machine reamer with hydro‑expanding, high‑precision collets or shrink‑fit holders is recommended; such combinations yield superior concentricity and runout accuracy, essential for achieving class‑fit tolerances. Specifying the correct clamping solution and maintenance schedule reduces machine downtime and supports continuous, predictable output—especially valuable in series production or precision workshops.

For application advice and supply, contact Metav Werkzeuge in Emmerich for tailored recommendations and immediate availability via email info@metav-werkzeuge.com or phone +49 2822 7131930

Technical data

• SKU: 2000865312NW
• UID: 2000865312NW
• Brand: TECWERK
• Packing unit: 1
• Designation: NC machine reamer DIN 212-3, H7, Form B, Ø11 mm, HSS‑Co

Facts

• Diameter: 11 mm
• Tolerance: H7
• Form: B
• Right‑hand cutting
• Cylindrical shank

Special features

• HSS‑Co material
• Spiral‑fluted (drallgenutet)
• Left‑hand helix (Linksdrall)
• Unequal flute spacing
• For through and blind holes in steel, GGG and non‑ferrous metals
• Optimised for use with hydro‑expanding, high‑precision and shrink‑fit holders
• Designed for NC machining applications

FAQ

What finished diameter and tolerance does the reamer deliver?
The TECWERK NC machine reamer provides a finished diameter of 11 mm with an H7 tolerance suitable for precision fits (SKU 2000865312NW).

Which materials can be machined with this tool?
This reamer is designed for steel, GGG (spheroidal graphite cast iron) and non‑ferrous metals, offering consistent surface quality in both through and blind hole applications.

Which clamping systems are recommended to achieve best accuracy?
To maximise concentricity and runout accuracy, use hydro‑expanding chucks, high‑precision collets or shrink‑fit holders together with the TECWERK NC machine reamer.

Is the tool suitable for blind holes?
Yes, the tool is intended for both blind and through holes and its spiral flute geometry supports reliable chip evacuation in both cases.

What shank and flute characteristics support stable machining?
The cylindrical shank ensures secure clamping, while spiral flutes and unequal flute spacing reduce vibration and improve surface finish during reaming.

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