Seco® was the first to introduce standard plunging cutters on the market, which means that we have long experience in the field and the widest range on the market.
Under normal conditions, a large overhang automatically means that cutting data must be reduced to prevent deflection of the tool, often leading to vibrations, poor surface finish and inferior dimensional accuracy. However, the principal of operation of the plunging cutter enables high cutting data to be used at overhangs many times greater than in “conventional” operations.
PRODUCT ADVANTAGES
Plunging is the most efficient
 milling system in terms of removing lots of materials in the fastest 
possible way. Plunging cutters allow very high material removal rates 
which makes them state-of-the-art for roughing in 3D milling 
applications.
When plunging the cutting forces are directed in the direction of the spindle. This means that plunging has an outstanding performance when machining with large overhangs. Seco offers the widest range of standard plunge milling cutters on the market.
The above mentioned cutters with XO-inserts can be used for both 
up-copying and down-copying in an axial feed direction e.g. for deep 
walls in mould tools. All cutter systems have internal coolant holes for
 best chip evacuation.
Plunging inserts are also available in Minimaster® in diameter 6–16 mm.
 Malaysia
Malaysia