7mm Precision Reamer H7 Form B Right-Hand Spiral Flute Solid HSS-Co, For Steel/GGG/Non-Ferrous - TECWERK

Take advantage of the combination of HSS‑Co construction, H7 tolerance and spiral flute geometry for reliable production of precision fits; order through Metav Werkzeuge or consult their specialists for process integration and clamping recommendations.

TECWERK NC machine reamer DIN 212‑3 H7 Form B — 7 mm, HSS‑Co

TECWERK NC machine reamer DIN 212‑3 H7 Form B, 7 mm, HSS‑Co is a precision reaming tool for producing accurate fits in blind and through holes across steel, GGG and non‑ferrous metals

• HSS‑Co for increased wear resistance
• Tolerance H7 for precision fits
• Left‑hand spiral flutes, unequal pitch
• Cylindrical shank for secure clamping

Consistent precision for production fits

The NC machine reamer DIN 212‑3 is manufactured to deliver H7 tolerance, ensuring repeatable diameters and consistent fits in series production. Built from HSS‑Co, the tool resists wear and maintains cutting geometry over longer runs, which reduces frequent tool changes and maintains part quality. Compliance with DIN 212‑3 and Form B gives a recognised framework for tolerances and form, making process validation and documentation straightforward for quality management systems.

Geometry that stabilises the cutting process

A combination of spiral flutes with a left‑hand helix and unequal pitch dampens vibration and reduces harmonic resonance during reaming, improving surface finish and concentricity. The tool is right‑hand cutting with spiral‑fluted design, optimised for both blind and through holes; this geometry helps evacuate chips reliably when machining steel, GGG and non‑ferrous metals. The cylindrical shank provides secure clamping in standard toolholders, contributing to improved runout accuracy and repeatability.

Integrating the reamer into high‑accuracy machining

When combined with hydro‑expansion, high‑precision collet or shrink‑fit chucks, the reamer achieves enhanced process reliability and minimal runout — a decisive factor in the production of press fits and sliding fits. The tool’s features support efficient cycle times by lowering scrap rates and rework needs. For technical queries or to specify clamping solutions for particular setups, Metav Werkzeuge’s specialists can advise on best practices for mounting and feed strategies to preserve tool life and part quality.

For production requirements that demand repeatable accuracy, request process and clamping advice from Metav Werkzeuge or place the TECWERK NC machine reamer via Metav Werkzeuge for assured delivery and expert support from Emmerich.

Technical Data

• Article number: 2000865308NW
• Label: NC‑machine reamer DIN 212‑3 H7 Form B D.7mm HSS‑Co TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Data

• Diameter: 7 mm
• Tolerance: H7
• Standard: DIN 212‑3
• Form: B

Special features

• Material: HSS‑Co
• Right‑hand cutting
• Spiral‑fluted, left‑hand helix
• Unequal pitch (unequal division)
• Cylindrical shank
• Suitable for blind and through holes
• Applications: steel, GGG, non‑ferrous metals
• Compatible with hydro‑expansion, high‑precision collet and shrink‑fit chucks for high runout accuracy

FAQ

What hole types is this reamer suitable for?
The TECWERK NC machine reamer DIN 212‑3 H7 Form B is suitable for both blind and through holes, designed to produce accurate H7 fits in a variety of materials.

Which materials can be machined with this tool?
Materials listed for the reamer include steel, GGG (spheroidal graphite iron) and non‑ferrous metals; the HSS‑Co composition supports wear resistance across these substrates.

How does the spiral flute design benefit machining?
Spiral flutes with unequal pitch reduce vibration and improve chip evacuation, leading to better surface finish and runout accuracy when the tool is used with high‑precision clamping.

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