Canela reference CCMT21.51 — 80° rhombic turning insert, grade TN30. Original Canela indexable turning insert.
The CCMT designation follows ISO 1832: C 80° rhombic shape, C 7° clearance angle, M tolerance class, T cylindrical hole with one 40-60° countersink, one-sided chipbreaker.
ANSI CCMT21.51 is the same insert as ISO CCMT 060204. Supplied with the Canela chipbreaker, in boxes of 10.
Dimensions in inches, as published in the Canela turning inserts catalog, page A23. Dimension letters follow the catalog diagram shown in the product image.
General purpose wear resistant turning grade. The multi-layer coating includes aluminum oxide to add additional heat and wear resistance. It is used to machine steel at lower speeds than TN15. This turning grade is for demanding metal removal operations, including cutting through scale at low speeds through heavy interruption, and problem machining of stainless steel at low speed and poor rigidity.
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An Authorized Canela Corp. Distributor. Full technical data in the Canela catalogs.
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