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Innovative and reliable – grooving with X4

The new grooving and parting off system X4 with 4-flute inserts is especially cost-efficient. The tangential and robust inserts and very stable clamp system achieve a very high repeat accuracy, high productivity and an outstanding surface quality.

The new X4 provides narrower cutting edge widths combined with greater cutting depth capability. Narrower cutting edge widths used in parting-off means less raw material waste, and narrower cutting edges are also essential in grooving and copying of small complex components.

Particularly advantageous is the possibility to combine one toolholder with all available insert sizes which reduces stock-keeping and increases flexibility.


The product ranges cover, in total, six cutting edge widths from 0.5 up to 3mm and imperial, from .031” up to .094”. Cutting depth stretches from 2.6 up to 6.5mm and maximum bar diameter to cut off varies from Ø5.2 mm up to Ø13 mm depending on the insert width.

Working range of X4


Chipbreaker MC, is capable of manoeuvering the chip formation in a variety of workpiece materials with exemplary comma or clock-spring formed chips. Another effective and useful feature is the straight front edge line which always produces a straight bottom in the groove. MC is available in neutral style intended for grooving and parting-off and also in angled right and left hand(R/L) shapes mainly for use in parting off bar and tube where the angled edge enables a reduction in centre pip or burring.

The FG geometry is designed for lock rings and flat standard threads, while the R geometry provides a series of full profile radius inserts.


Seco designed the X4 system for the precise grooving and parting-off of small and medium-sized complex parts. The company is increasing the amount of applications that the system can accommodate by adding smaller shanks to the product family. The new 1212 and 1616 shanks as well as inch sizes 1/2" and 5/8" with a compact toolholder head design bring the reliability and value of the X4 system to small sliding head machines, where there is a need for small holders with narrow cuttingedge widths.


An additional boost to tool life and chip control can be achieved with the Jetstream Tooling Duo concept supplied as standard on both shank and Capto toolholders. What makes the difference, compared to conventional external cooling, is the coolant outlet positioned in the clamp close to the cutting edge and an additional outlet underneath the cutting edge. These coolant jets cool the insert and chip efficiently and the force from the upper jet also contributes to curling the chips in a favourable manner.


  • Flexibility, all inserts can be fitted in all types of holders
  • Productivity, tool life and chip control is enhanced by Jetstream Tooling Duo
  • Economy, narrow cutting edge widths contribute to less raw material waste



The two grade offerings, CP500 and CP600 provide a broad coverage of applications and workpiece materials. CP600 is considered as the first choice, a basic grade with advantageous mix of both toughness and wear resistance. When more wear resistance is needed then the harder CP500 should be selected.

X4 Grade overview


Tthe unique TGH 1050 grade features a very hard micro grain substrate and new coating for efficiently cutting hardened steels. The grade also complements Seco’s existing CP500 and CP600 carbide insert grades and further broadens the application possibilities of the X4 range.

TH 1050e will benefit manufacturers in all industry segments, especially automotive. While the grade was designed for hardened materials, it is also well suited for machining superalloys/heat-resistant alloys often found in the aerospace and power generation industries. In testing, the TGH 1050 cut significantly faster and lasted much longer as compared with existing grades.


  • New hard TGH 1050 grade
  • New PVD coating
  • Multi-edged, tangential inserts
  • Applicable to toolholders with Jetstream Tooling Duo coolant technology



  • 24 new inserts in widths of 0.5 mm
  • 3 mm in MC and FG geometries
  • Right- and left-hand versions


• Tangential, rigid design provides stability and high productivity
• Jetstream Tooling Duo
• Neutral and angled R/L inserts
• Straight cutting edge generates a straight groove bottom
• Can also be used in longitudinal turning
• Cutting edge widths metric from 0.5 up to 3.0 mm and imperial from .031" up to .094".
• Eight large radii insert versions with widths from 1.5 mm - 3 mm with corner
   radii of 0.2 mm and 0.3 mm in addition to the current radii options of
   0.1 mm and 0.15 mm (each width right- and left-hand versions)
• Available in shanks, metric 1616, 2020, 2525 and imperial .63", .75", 1.00"
• Available in Capto, C4, C5, C6
• Typical components: Nuts, shafts, sleeves, fittings, screws, joints, caps, pulley wheel

X4 in holder



  • Broad range of cutting edge widths and application coverage
  • Rigid design allows high cutting speeds and feed rates for an overall boost in productivity
  • 1 toolholder for all insert types, resulting in less inventory
  • 4 usable edges, with the 4th edge being usable even with 3 substantial edge breakages