High-speed finishing of gray cast iron｜ Uncoated CBNs

Best CBN grades for machining gray cast iron

Highly effective machining even surpassing ceramic

B23 & B30 grades have high CBN content to enhance wear resistance characteristics
Perform ultra-high speed machining of up to 4000 SFM

Gray cast iron
B23 for roughing to semi-finish turning operations
B30 for semi-finish to finish turning operations

Scroll the table →

Grade	Material	Operation type	Machining	Cutting speed (SFM)	Feed(IPR)	DOC(inch)	Coolant
B23/B30	Gray cast iron	Turning	High-speed finishing	1300 - 4500	.040 - .020	.008 - .080	DRY/WET

OD turning of oil pump housing
Material : FC250
Cutting speed : 830 SFM
Feed : .0079 IPR
DOC : .0787 inch
Coolant : WET
B23	210 pcs / corner
Competitor's CBN	70 pcs / corner

Continuous ID bore operation on a cylinder block
Material : Gray cast iron
Cutting speed : 2660 SFM
Feed : .0118 IPR
DOC : .0039 inch
Coolant : WET
B30	800 pcs / corner
Competitor's CBN	500 pcs / corner

Please check product catalog for tooling lineup