Modern cast iron materials are used in components subject to high dynamic and thermal loads. For example, in automotive engineering various parts are made out of cast iron. During machining, however, these materials place higher demands on the tools due to their particularly high strength and abrasiveness.

Reime Noris has further developed the proven NORIS TWIN GGV HSSE-PM powder steel series with these aspects in mind. The extremely stable cutting geometry achieves the greatest possible resistance to mechanical stress and ensures an optimally controllable chip flow in the machining of through and blind holes up to 2xD. Furthermore, the ISO2X manufacturing tolerance counteracts abrasive wear and guarantees a thread true to gauge in 6H tolerance even after longer use.

In addition, the wear of the carbide substrate is significantly minimised by the specifically optimised TiCN coating. The combination of high hardness and toughness of the substrate with the coating contributes to a significant increase in tool life and ensures economical thread production.

The taps are supplied in the metric size range from M4 to M16 and M12x1.5 to M20x1.5 with a Form E chamfer length and axial coolant hole.

NORIS hand and machine taps
NORIS hand and machine taps are manufactured in 133 tap variants in 25 thread types form the standard portfolio in the field of taps. Taps are supplied with blind and through hole threads.

For further details contact Duncan Macdonald & Co on TEL: 011 444 4345 or visit www.macduck.co.za