Featuring four helical cutting edges that measure 0.315" in length, the MiniTang inserts from Iscar Metals, Inc. apply the tangentially-clamped design of the larger TangMill inserts. Because of the small size of the T490 LNMX 0804 PN-R inserts and the tangential orientation in the pocket, these tools are said to have a larger core diameter design than radially-oriented inserts.
The T490 E90LN end mills can be used for machining 90-degree shoulders at high feed rates, with virtually no mismatch. The helical cutting edge and positive rake angle enable soft, clean cuts, according to the company. In addition, the MiniTang line can be used on side plunging applications.
The end mills are offered in various sizes, with tool diameters ranging from 0.625" to 1.50", each of which is available with coarse or fine pitch configurations.