31mm Countersink 90° HSS Special Coated 3-Flute EUC Cylindrical Shank, Precision Radial Relief - MAPAL Dr. Kress SE & Co. KG

Take advantage of a high‑precision HSS design with a 90° cutting angle and an extreme unequal‑pitch (EUC) geometry to reduce axial and radial forces for smoother feeds and less chatter. Order the countersink directly via Metav Werkzeuge or ask our consultants if needed.

MAPAL HSS countersink EUC DIN 335 C — 90° Ø31 mm, 3 cutting edges

The MAPAL HSS countersink EUC DIN 335 C is a precision 90° chamfering tool designed for reliable deburring and chamfering in steel, cast iron and non‑ferrous metals.

• HSS special coating, DIN 335 C design
• 90° angle with three cutting edges
• Reduces axial force by 50%
• Suitable for steel, cast iron and non‑ferrous metals

Precision geometry for consistent chamfers and less rework

The tool's HSS base material combined with a special coating and the DIN 335 C profile delivers a predictable, repeatable chamfer every cycle. The extreme unequal‑pitch (EUC) tooth spacing and radial ground relief minimise harmonics and vibration, so less energy is diverted into chatter and more into cutting. These design choices mean a cleaner finish on chamfers and deburring operations, reducing downstream finishing work and saving machining time.

Lower forces, smoother feeds — measurable productivity gains

By lowering axial force by around 50% and radial force by about 25%, the countersink permits lower feed forces and steadier spindle load. In practical terms, the recommended feed in steel (up to 500 N) of 0.22 mm/rev balances tool life and surface quality. The three cutting edges and right‑hand cutting geometry distribute load evenly, which reduces tool deflection and allows more consistent depth control during chamfering. For production environments this translates into fewer rejects and improved throughput.

Robust application range with workshop‑friendly handling

Engineered for the machining of steel, cast iron and non‑ferrous metals, the countersink's prepared cutting edges and precision execution deliver reliable results across mixed production batches. The cylindrical shank ensures compatibility with standard tool holders and simple changeovers on manual and CNC equipment. The combination of special coating and hardened cutting geometry supports longer service intervals and steady edge performance, reducing the need for frequent replacements and supporting continuous operation.

For precision countersinking backed by MAPAL technology, contact Metav Werkzeuge for technical advice and reliable supply: info@metav-werkzeuge.com, +49 2822 7131930

Technical data

• Article number: 4000806045NW
• Manufacturer: MAPAL Dr. Kress SE & Co. KG
• Packaging unit: 1
• UID: 4000806045NW

Facts

• Diameter: 31 mm
• Countersink angle: 90°
• Cutting edges: 3
• Feed in steel (up to 500 N): 0.22 mm/rev

Special features

• HSS, special‑coated
• DIN 335 C design
• Three cutting edges
• Right‑hand cutting
• Precision execution, radial ground
• Extreme unequal pitch (EUC)
• Optimised countersinking geometry
• Prepared cutting edges
• Reduces axial force by 50% and radial force by 25%
• Suitable for steel, cast iron and non‑ferrous metals
• Cylindrical shank

FAQ

What materials can this countersink machine?
The MAPAL HSS countersink EUC DIN 335 C is suitable for machining steel, cast iron and a range of non‑ferrous metals such as aluminium and brass.

What are the measurable performance benefits?
Thanks to its EUC geometry and prepared cutting edges, the countersink reduces axial force by approximately 50% and radial force by around 25%, enabling smoother feeds and improved surface finish.

What feed should be used for steel applications?
A reference feed of 0.22 mm/rev in steel (with cutting forces up to 500 N) is indicated for a balance of tool life and surface quality when using the MAPAL countersink.

Is the tool compatible with standard tool holders?
Yes. The cylindrical shank design allows straightforward mounting in common tool holders on both manual machines and CNC spindles for quick changeovers.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com