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Technical information

Material: 20MnCr5

Case hardened 58-62 HRC

Cutting data:
Vc = 140 m/min
Vf = 0.08 mm"

Example 3

GROOVING OF HARDENED PARTS
Hardturning on Gear wheel

Special CBN-tipped insert type S117 is used to finish the width of the groove. The stock removal is approximately 0.15 - 0.2 mm (.006˝ - .008˝). The insert is ground to final width of the groove.

Both flanks are machined at the same time (Rz=2.3 μm). To obtain high surface finish, the insert has a wiper flat on both side cutting edges.Stable machining conditions are imperative. No coolant.