Posted by M Schneberger on September 19, 2001 at 20:23:39:
In Reply to: hobbing of hard gears posted by Varun Soni on October 02, 2000 at 04:02:34:
I hob hard gears of 4140 and 4340 on a daily basis with older G&Es. Most of my blanks are H/T to 36-42 Rc. We use TiN coated cutters,52-54RPM and .030" feed rate. Have found that M45 cutters hold up pretty well.
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