QPEB-AK – INNOT insert

QPEB-AK

Full-radius insert for grooves on aluminium alloy wheels, with sharp AK cutting edge and INNOT carbide grades.

ISO N

Alloy wheels

Uncoated

★ ITK10 · ITK20

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Technical data sheet PDFCutting data, sizes and grades

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INNOT grades

CVD, PVD and cermet for ISO P, M, K, S

Standard ISO designation

Compatible with the insert holders you use

Technical support

We help you choose grade and chipbreaker

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Description

Specifications

Code Width CW Corner radius RE INSL Available grades
QPEB8040-AK 8.0 mm (±0.025) 4.0 30.0 ITK10 – ITK20

CW = cutting width, RE = corner radius, INSL = insert length (mm).

AK chipbreaker data sheet

Operation Grooves and profiles on aluminium alloy wheels
ISO material N (aluminium and non-ferrous metals)
Type Two cutting edges, full-radius tip
Tolerance E – width ±0.025 mm
Features Sharp, polished cutting edge for aluminium: low friction, no built-up edge and an excellent finish. Fine-grain uncoated carbide grades.
Compatible toolholders Grooving toolholders on request

Available INNOT grades

Grade ISO Coating Composition Application
ITK10 ★ N Uncoated Fine-grain carbide First-choice grade for turning aluminium alloys. Uncoated carbide with a fine, uniform grain matrix: high transverse rupture strength and good wear resistance.
ITK20 ★ N Uncoated Carbide Universal grade for turning aluminium alloys. Uncoated carbide with excellent wear resistance, better chipping resistance, great versatility and reliability.

★ Recommended grade for this insert. CVD = chemical vapour deposition coating, PVD = physical vapour deposition coating.

Recommended cutting data

Printable cutting data tableAll the data on this page in an INNOT PDF to keep in the shop.Download PDF
Grooves and profiles on alloy wheels (ISO N) – AK chipbreaker

Starting values for cast and wrought aluminium alloys, with coolant.

Operation Grade Vc (m/min) fn (mm/rev) ap (mm)
Radial plunge (groove) ITK10 · ITK20 250 – 600 0.08 – 0.20 –
Side turning and profiling ITK10 · ITK20 300 – 700 0.15 – 0.35 0.50 – 3.00

Speeds of the ITK10 and ITK20 grades on aluminium alloys, reduced for radial plunging. With high-silicon alloys (above 10%) start from the minimum values.

Tips for use

  • Parting off: when approaching the centre reduce the feed by 30% for longer life and a better finish; keep the tool overhang to a minimum.
  • External grooving and side turning: with depths over 0.5 mm work in radial passes (up to 0.75 × insert width), retract 0.1 mm, then an axial pass.
  • Wide grooves: make side-by-side stepped plunges, then finish the bottom and the flanks.
  • Face grooves: start from the largest diameter and move inwards; for finishing machine the bottom and the outer diameter first, then the inner one.
  • Internal grooves: work from the inside outwards to help the chip out.