The Ceratizit Fullmax universal solid-carbide reamer is now available in a short version. Offering even greater stability, the Fullmax short variant allows for higher cutting speeds, with the added advantage of long service life and a lower price.

With its reduced length, the Fullmax solid-carbide reamer offers numerous advantages. Firstly, the tool is very stable and characterised by low vibration, resulting in up to 10% higher cutting speeds in the main application areas of steel and cast iron. Secondly, feed rates can increase by 10-20%.

This combination delivers machining times up to 20% faster.

In addition, there are better reaming results in terms of surface finish and dimensional accuracy, reports Ceratizit.

Like the universal standard Fullmax reamers, the short versions are characterised by their specialised coating and cutting edge pitch, which help to reduce chatter marks and improve chip formation. In detail, the unequal division, with cutting edges facing each other in pairs, leads to reduced deviations in circularity and cylinder shapes. The increased angle differences reduce the tendency for the tool to oscillate and form chatter marks.

Thanks to the flute-shape opening angle adapted to the new pitch, there is sufficient space for optimised chip removal, even on long-chipping materials. The targeted coolant supply provides further assistance. Although the Fullmax short-version reamer is suitable for deployment on all CNC milling and turning centres, its reduced dimensions make it particularly attractive for use on sliding-head lathes.

The short series Fullmax is available from stock in H7 tolerance and 1/100 mm increments. Dimensions are individually configurable in the diameter range from 2.96 to 20.05 mm.

For further information
www.ceratizit.com

Walter has expanded its D4120 drilling line to introduce 2xD, 3xD, 4xD and 5xD dimensions, therefore superseding the B4000 Series Xtra.tec insert drills.

Regarded as a flexible all-rounder, the extended D4120 indexable insert solid drill line is available in a range of diameters that span from 13.5 to 59 mm. The product expansion now incorporates the D4120-02 2xD and D4120-03 3xD drills for creating holes from 13.5 to 41.3 mm diameter, as well as the D4120-04 and D4120-05 4xD and 5xD drills for holes from 17 to 59 mm diameter.

The drills feature outer and centre inserts that ensure precision balancing of the cutting forces to maximise productivity. To this end, the centre insert is slightly larger than the outer indexable inserts, which are equipped with a corner protection chamfer. As well as providing greater process reliability, this design plays a crucial part in increasing precision levels, stability and reducing drilling noise. Adding to process reliability is a hardened and polished drill body design that offers increased protection against friction in operation, and an improved coolant channel design that allows the flow of 25% more coolant than previous drills.

Walter is also now offering inserts with a wiper edge for high-quality surface finishes. The drill body features two through coolant channels and a measuring collar for easy drill identification, even when assembled. Polished flutes and a hardened surface further optimise chip evacuation and wear resistance.

The combination of the D4120 drill body and the four-edged indexable inserts offers users cost-efficiency advantages and high levels of flexibility thanks to a co-ordinated system.

For further information
www.walter-tools.com