1979 KAPP — Hob Grinding / Sharpening Machine ASA 305 T

The KAPP ASA 305 T is a precision hob grinding (sharpening) machine manufactured by KAPP & CO, a renowned German machine tool maker based in Coburg, Bavaria.

This machine is specifically designed for the re-sharpening of hob cutters used in gear manufacturing, ensuring the restoration of accurate cutting geometry and extended tool life.

The ASA 305 T features a fully hydraulic drive system for both the grinding spindle and the slide, providing smooth and consistent performance. The grinding spindle speed is infinitely variable across two motor ranges — 1,500 to 3,400 rpm and 3,400 to 6,800 rpm — allowing adaptation to a wide variety of grinding wheel sizes and materials. The grinding head can be swiveled for helix angle adjustment up to ±45° and for flank angle settings at 0°, 15°, or 30°, accommodating diverse hob geometries.

The machine supports hobs up to 300 mm in diameter and 625 mm in clamping length, with an automatic infeed system and up to 99 pre-selectable individual feed steps, making it suitable for both manual and semi-automatic operation. The integrated oil mist extraction system ensures a cleaner working environment, and the large coolant tank supports sustained production use.

This is a robust, industrial-grade machine well suited for tool rooms, gear manufacturers, and precision machining facilities requiring reliable hob maintenance capability.