Order RT 150 - Flyer |
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When maximum form and
alignment accuracy are required:
Ratio drills RT 150
with coolant ducts, for drilling depths up to 15 × D.
RT 150 GG
Type RT 150 GG in solid tungsten carbide with coolant ducts, specially developed for precision machining
of short-chipping materials such as cast iron, spheroidal graphite and malleable cast iron, aluminium alloys
with a high silicon content. On request also available with S-, A-, C- and M-coating, to optimize the
performance for special machining tasks. The tools can be reground without necessitating a recoating.
Advantages
- minimal deviation from straightness (see fig. 1) through extremely good self-centering characteristics,
double margins
- close tolerances on diameters, to H7
- excellent surface qualities
- increased cutting speeds, increased productivity
For further information go to the RT 150 GG - product description
RT 150 GN
Chattering may occur when applying type RT 150 GG in unstable conditions without a pilot hole and drilling
depths over 7 × D.
Type RT 150 GN requires no pilto hole up to approx. 15 × D. The negative helix divides the cutting forces
into the elements Fn and the dragging force Fz. The drawing force Fz is therefore
on the spiral part, so the tool is being drawn.
Advantages
- no bending, no buckling, as drawing force causes a pre-loading on the spiral part.
- more economical, as no pilot hole required up to approx. 15 × D.
- high dynamic stability, type RT 150 GN operates with no oscillating movement and vibration-free.
- good surface qualities and dimensional accuracy of hole
For further information go to the RT 150 GN - product description
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