CBN (SINTERED CBN)

MB710 and MB730 for cast iron cutting.
BC5030 for high-speed roughing of cast irons is now available.
BC5030 roughing grade in combination with the AOX body allows use of up to 16 corners and enables cost-effective, high performance machining.

SELECTION STANDARD / RECOMMENDED CUTTING CONDITIONS

FINISHING

Work Material

Structure

Cutting Speed (SFM)

Feed
(inch/rev)

Depth of Cut
(inch)

Coolant

820

1640

2460

3280

4100

Gray Cast Iron

Ferritic + Pearilitic

－.012

－.020

Dry

Pearilitic

ROUGHING

Work Material

Structure

Cutting Speed (SFM)

Feed
(inch/rev)

Depth of Cut
(inch)

Coolant

820

1640

3280

4920

6560

Gray Cast Iron

Pearilitic

─.006

─.118

Dry

FEATURES AND BASE

Grade	Application	Features	Main Component	Coating Layer
MB710	For General Cutting	General purpose grade with well balanced wear and fracture resistance.	CBN TiC Al2O3	─
MB730	For High Speed Cuttin For Interrupted Cutting	Has the largest CBN content and therefore displays good thermal conductivity. It is suitable for the high temperatures that are generated in high speed cutting.	CBN (High Content) Co Base Alloy	─
BC5030	High-speed machining at large depths of cutHigh-speed interrupted machining at large depths of cut	High CBN content and high thermal conductivity. The whole insert is composed of sintered CBN. This enables high speed, high efficiency machining at larger depths of cut. The coating is for recognition of spent corners.	CBN AIN	TiN Base

APPLICATION EXAMPLES

Tool		AF5000R0404D
Insert		LDCN190412R (MB730)
Machine		Machining Center
Workpiece		AISI-35
Cutting Condition	Cutting Speed (SFM)	3940
	Depth of Cut (inch)	.110
	Width of Cut (inch)	2.76
	Table Feed (inch/min)	120
	Feed per Tooth (inch/tooth)	.004
Result		10 times longer tool life and 4 times higher efficiency than ceramics. Excellent machining with a surface finish of Ra < 64!m.