Diamond Tipped Single Point

Basic Application Guidelines

For CBN and PCD Tipped Tools and Inserts

Applications	PCD	CBN
Hard Cast Iron	No	Yes
Soft Cast Iron	No	Yes
Hardened Steel	No	Yes
Super Alloys	No	Yes
Abrasive Nonmetallic	Yes	No
Nonferrous Materials	Yes	No

Cubic Boron Nitride (CBN)

CBN is excellent for the continuous cutting of a wide range of hardened steels, powdered metals, cast irons and super alloys. CBN tipped product are precision ground with hones for matching to sub-micron finishes with maximum tool life. CBN tipped tools and inserts can take the place of grinding.

Polycrystalline Boron Nitride (PCD)

PCD is excellent for continuous cutting of a wide range of non-ferrous and non-metal materials. The products are precision ground for machining to sub-micron finishes with maximum tool life. PCD tipped tools and inserts allow for higher cutting speeds with longer tool life.

Guidelines for CBN

(Ideal for hard ferrous metal -45 Rc plus)

Depth of cut should not exceed 30% of CBN tip length.
Do not use coolant as this could cause thermal cracking.
Do not stop the machine with the tool in cut - this will result in tool breakage.
Make sure the machine and setup is rigid and solid; chatter will cause chipping.
Tool height when boring should be slightly above center; tool deflection will put the tool on center.
Do not contact the tool to a hard surface prior to the machining process - this will cause chipping.

Guidelines for PCD

(Ideal for non-ferrous materials)

Higher speeds minimize tool buildup.
Depth of cut should not exceed 70% of PCD tip length.
Use of coolant will reduce heat and improve surface finish.
Do not stop the machine with the tool in cut - this will result in tool breakage.
Make sure the machine and setup is rigid and solid; chatter will cause chipping.
Tool height when boring should be slightly above center; tool deflection will put the tool on center.
Do not contact the tool to a hard surface prior to the machining process - this will cause chipping.

CBN Tipped Bar Applications

Single Point

Applications
Hard Cast Iron	Pumps
	Impellers
	Shafts
Soft Cast Iron	Engine Blocks
	Brake Rotors
	Transfer Housings
Hardened Steel	Pinion Gears
	Shafts
	Bearings
Super Alloys	Turbine Disk
	Turbine Blade
	Engine Shafts

Application Guidelines
Make sure the machine and setup is rigid and solid. Chatter will cause chipping.
Tool height when boring should be slightly above center. Tool deflection will put the tool on center.
Do not stop the machine with the tool in cut. This will result in tool breakage.
Do not use coolant. This could cause thermal cracking.
Do not contact the tool to a hard surface prior to the machining process. This will cause chipping.
Depth of cut should not exceed 30% of CBN tip length.

CBN Tipped Tools Speeds and Feeds

Material	BHN/Rc	Speed Range (SFM)	Feed IPR	Single Point PCD Tipped Inserts
				Tool Diameter
				.120-.160	.180-.230	.290-.320	.360+
				Max Doc
Heat Treated Alloy	45-60 Rc	200-600	.001-.005	0.003	0.004	0.006	0.009
Tool Steel	45-60 Rc	200-600	.001-.005	0.003	0.004	0.006	0.009
Nodular Iron	N/A	600-1500	.001-.005	0.006	0.01	0.02	0.03
Pearlitic Iron	220-240 BHN	600-2500	.001-.007	0.006	0.01	0.02	0.03
White/Chilled Iron	54-60 Rc	200-500	.001-.005	0.005	0.008	0.012	0.015
Super Alloy Ni Base	240-475 BHN	200-800	.001-.005	0.003	0.004	0.006	0.025
Cobolt Based Alloy, Stellite	45-55 Rc	200-500	.001-.005	0.003	0.004	0.006	0.009
Inconels	45-55 Rc	200-500	.001-.005	0.003	0.004	0.006	0.009

SFM = Surface Feet per Minute, DOC = Depth of Cut

AS THE DOC DECREASES, THE FEED RATE CAN INCREASE

SCT CBN tipped boring bars are excellent for continuous cutting of a wide range of hardened steels, powdered metals, cast irons and super alloys. The products are precision ground with hones for machining to sub-micron finishes with maximum tool life. CBN tipped tools can take the place of grinding.

PCD Tipped Bar Applications