A technological breakthrough in fine boring

MAPAL has embodied expertise in fine boring for decades. Classic fine boring tools use two adjustment elements for setting diameter and cutting-edge taper, therefore achieving maximum precision. This highly sensitive setting process requires in-depth know-how on the part of the onsite operator and was the starting point when developing the EasyAdjust-System in diameter ranges from 20 mm. With just one adjustment screw for the diameter and a back taper permanently integrated in a cartridge system, it significantly shortens setting times while maintaining high dimensional accuracy and surface quality. It also minimises sources of error.

In 2026, MAPAL is transferring the principle of one-screw setting to the technically demanding diameter range from 10 to 19 mm through a new design configuration. It is also the first company to launch the new EA-Performance-System for a broad spectrum of materials.
 

The design implementation of stable insert fixation with integrated back taper in this diameter range places high demands on system design, manufacturing precision and stability. It requires the insert seat and clamping mechanism to be precisely coordinated. MAPAL has achieved this by adapting the design of the connection between the insert and the clamping system.

At the heart of the innovation is a newly developed indexable insert with defined contact geometry, which, in combination with a matching clamping jaw, achieves positive-locking and reproducible positioning of the insert. The clamping mechanism between the indexable insert and clamping jaw transfers the setting movement precisely and ensures stable fixation under process load.
 

Für höchste Präzisionsanforderungen in kleinen Durchmesserbereichen ermöglicht das neue EA-Performance-System von MAPAL erstmals eine µm-genaue Einstellung bei einfachem Handling und höchster Prozesssicherheit. Minimierter Korrekturaufwand, geringer Ausschuss und stabile Bearbeitungsprozesse sorgen für hohe Effizienz in Anwendungen wie hochpräzisen Pass- und Lagerbohrungen, etwa in Getriebegehäusen, Zylindern oder an Kurbel- und Nockenwellen.

Das System wird bereits bei ausgewählten Kunden eingesetzt, wo sich das stabile Einstellverhalten sowie reproduzierbare Bearbeitungsergebnisse im laufenden Prozess bestätigt haben.