9mm NC Machine Reamer H7 Form B HSS-Co Right-Hand Spiral Fluted With Cylindrical Shank - TECWERK

Take advantage of HSS‑Co construction and tolerance H7 to secure consistent fitment and minimal rework. The combination of spiral fluting and unequal pitch reduces chatter while the cylindrical shank ensures stable clamping in precision holders; order the reamer directly via Metav Werkzeuge or consult our specialists for process integration.

NC machine reamer DIN 212-3 H7, Ø 9 mm – HSS‑Co (TECWERK)

A NC machine reamer DIN 212-3 H7 Form B Ø 9 mm (HSS‑Co) by TECWERK for finishing base and through holes in steel, spheroidal graphite cast iron (GGG) and non‑ferrous metals.

• HSS‑Co for high wear resistance
• Tolerance H7 for repeatable fits
• Spiral flutes with left‑hand helix
• Cylindrical shank for secure clamping

Achieve precise, repeatable fits for assemblies

The reamer is built from HSS‑Co, a high‑cobalt high‑speed steel alloy that maintains cutting edge stability under heat, which directly reduces the need for rework and extends tool life. Its H7 tolerance is engineered for precision fit‑up, delivering consistent clearance and allowing predictable assembly of shafts and housings. For production environments this translates into fewer rejected parts and tighter process control, supporting throughput and quality targets.

Stable cutting and reduced chatter for smoother finishes

A combination of spiral flutes and unequal pitch actively reduces harmonic vibration during reaming, improving surface finish and dimensional stability. The left‑hand helix together with a right‑hand cutting geometry promotes effective chip formation and evacuation in through‑hole operations. As a result, the tool produces smoother bore surfaces and lowers the risk of built‑up edge, which is especially beneficial when machining mixed batches of steels and non‑ferrous alloys.

Designed for demanding materials and hole types

Specified to DIN 212‑3 and supplied in Form B, this reamer is suitable for both base (blind) and through holes in common engineering materials such as steel, GGG (spheroidal graphite cast iron) and non‑ferrous metals. The material compatibility and robust geometry enable its use in series production and toolrooms where component integrity matters. Where intermittent hard spots occur, the cobalt alloy helps maintain cutting performance over longer runs.

Integration into precision processes for increased process security

A cylindrical shank allows secure clamping in standard NC toolholders, and the tool is expressly suitable for use with hydro expansion, high‑precision collets or shrink‑fit holders to achieve superior run‑out accuracy. This compatibility is key for applications that demand tight concentricity and repeatability. Incorporating this reamer into a controlled tooling system reduces downtime, simplifies tool change routines and supports traceable manufacturing results.

For high‑precision reaming tasks, rely on the TECWERK NC machine reamer and consult Metav Werkzeuge for tailored advice and secure supply from Emmerich — e‑mail info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 2000865310NW
• Product name: NC‑machine reamer DIN 212‑3 H7 Form B Ø 9 mm HSS‑Co TECWERK
• Packaging unit: 1

Facts

• Diameter: 9 mm
• Tolerance: H7
• Standard: DIN 212‑3

Special features

• Material: HSS‑Co
• Form: B
• Right‑hand cutting geometry
• Spiral fluted (drall‑fluted) with left‑hand helix
• Cylindrical shank
• Unequal pitch (variable division)
• Suitable for base and through holes
• Suitable for steel, GGG (spheroidal graphite cast iron) and non‑ferrous metals
• Compatible with hydro expansion, high‑precision chucks and shrink‑fit holders for high run‑out accuracy

FAQ

What hole types is this reamer suited to?
The TECWERK NC machine reamer is designed for both base (blind) and through holes, delivering precise finishes for assemblies in production and repair work.

Which materials can be machined with this reamer?
This reamer is suitable for steel, spheroidal graphite cast iron (GGG) and non‑ferrous metals, thanks to its HSS‑Co construction and robust geometry.

How does the tool reduce vibration and improve surface finish?
Unequal pitch and spiral flutes reduce harmonic vibration and chatter; the result is a smoother bore and more consistent dimensional accuracy when using the reamer in appropriate holders.

Can the reamer be used in shrink‑fit or collet systems?
Yes, the cylindrical shank of the TECWERK reamer allows secure clamping in standard collet and shrink‑fit systems, enabling improved run‑out accuracy and process stability.

What level of dimensional accuracy can be expected?
The tool is specified to tolerance H7 according to DIN 212‑3, which provides repeatable fits suitable for precision assemblies and tight bore tolerances.

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