Cubic Boron Nitride Inserts
Resisting wear and fractures when cutting hardened steel, these cubic boron nitride inserts last longer than carbide inserts. Use them for high-speed finishing and interrupted cutting applications. All have multiple cutting edges, so when an edge dulls, rotate the insert in your holder to use a sharp edge. Those with larger nose angles and tip radii have stronger cutting edges, but create more vibration and a rougher finish.
Positive-rake inserts have an edge that is less than 90° to sit flat in the holder for improved cutting clearance and a better finish than negative-rake inserts. They have cutting edges on one side of the inserts.
Negative-rake inserts have a 90° edge and sit at an angle in the holder to provide a strong cutting force for heavy duty applications. They have cutting edges on both sides of the inserts for twice the life of comparable positive-rake inserts.
For technical drawings and 3-D models, click on a part number.
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| CCMW-21.50.5 | 1/4" | 3/32" | 0.08" | 0.008" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| CCMW-21.52 | 1/4" | 3/32" | 0.07" | 1/32" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
| CCMW-32.51 | 3/8" | 5/32" | 0.07" | 1/64" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
| CCMW-32.52 | 3/8" | 5/32" | 0.07" | 1/32" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| CNGA-431 | 1/2" | 3/16" | 0.1" | 1/64" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| CNGA-432 | 1/2" | 3/16" | 0.1" | 1/32" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
| CNGA-434 | 1/2" | 3/16" | 0.13" | 1/16" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| DCMW-32.50.5 | 3/8" | 5/32" | 0.07" | 0.008" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| DNGA-431 | 1/2" | 3/16" | 0.1" | 1/64" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| DNGA-432 | 1/2" | 3/16" | 0.09" | 1/32" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| TNGA-331 | 3/8" | 3/16" | 0.11" | 1/64" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| TNGA-332 | 3/8" | 3/16" | 0.09" | 1/32" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| VBGW-331 | 3/8" | 3/16" | 0.08" | 1/64" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| VBGW-332 | 3/8" | 3/16" | 0.07" | 1/32" | Positive | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| VNGA-331 | 3/8" | 3/16" | 0.08" | 1/64" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
| VNGA-332 | 3/8" | 3/16" | 0.07" | 1/32" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 00000 | 00000 |
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insert Code | Inscribed Circle Dia. (IC) | Thick. | Cutting Edge Lg. | Tip Radius | Rake Type | For Cutting Operation | Finish | Coating Process | 1-9 | 10-Up | |
For Use On Hardened Steel | |||||||||||
| WNGA-432 | 1/2" | 3/16" | 0.1" | 1/32" | Negative | Medium | Titanium Aluminum Oxygen Nitride-base (TiAlON) Coated | PVD (Physical Vapor Deposition) | 00000000 | 000000 | 000000 |
High-Precision Cubic Boron Nitride Ball End
Mills for Tool Steel and Hardened Steel
Make finishing cuts in tool steel and hardened steel with these cubic boron nitride (CBN) end mills. Harder than carbide end mills, they’re better for making small, precise cuts and last more than five times as long. And while they’re not as hard as diamond end mills, they dissipate heat much better. These end mills have a 0° helix angle for increased rigidity, helping to prevent chipping and ensuring more precise cuts. Deep chip pockets remove small chips for greater precision and to prevent surface roughening.
Because they’re brittle, these end mills require a highly rigid setup such as a CNC machine to prevent them from breaking. It’s also recommended that they’re used with oil coolant.
For technical drawings and 3-D models, click on a part number.
Neck | For Max. Hardness Rockwell C70 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mill Diameter, mm | Shank Diameter, mm | Diameter, mm | Length, mm | Length of Cut, mm | Overall Length, mm | Flute Spacing | Helix Angle | For Use On | End Mill Type | Each | |
Uncoated | |||||||||||
2 Flute | |||||||||||
| 0.2 | 4 | 0.19 | 0.15 | 0.15 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 0000000 |
| 0.3 | 4 | 0.28 | 0.27 | 0.23 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 0.4 | 4 | 0.37 | 0.2 | 0.3 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 0.5 | 4 | 0.46 | 0.62 | 0.38 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 0.6 | 4 | 0.56 | 1 | 0.5 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 0.8 | 4 | 0.76 | 1.4 | 0.6 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 1 | 4 | 0.95 | 1.8 | 0.7 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 1.2 | 4 | 1.15 | 2.2 | 0.8 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 1.5 | 4 | 1.45 | 2.8 | 1 | 52 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
| 2 | 4 | 1.94 | 3.8 | 1.2 | 52 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 000000 |
Long-Life Grinding Bits for Metals
Similar to diamond, boron nitride is harder than aluminum oxide and lasts longer. Bits are also known as jig grinding pins and mandrels.
Head diameter is measured at the widest point.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape | Abrasive Material | O'all Lg. | Grit (Surface Texture) | Each | |
For Steel, Stainless Steel, Iron | ||||||||
1/8" Shank Dia. | ||||||||
| 0.03" | 0.08" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 000000 |
| 0.04" | 0.08" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 00000 |
| 0.05" | 0.08" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.06" | 0.12" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.07" | 0.12" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.08" | 0.16" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.09" | 0.16" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.1" | 0.16" | 100,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.11" | 0.16" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.12" | 0.16" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.13" | 0.2" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.14" | 0.2" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.16" | 0.2" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1/4" | 1/4" | 50,000 | Cylindrical | Boron Nitride | 2" | 150 (Smooth) Green | 00000000 | 00000 |
| 1/4" | 1/2" | 50,000 | Cylindrical | Boron Nitride | 2" | 150 (Smooth) Green | 00000000 | 00000 |
| 3/8" | 1/4" | 50,000 | Cylindrical | Boron Nitride | 2" | 150 (Smooth) Green | 00000000 | 00000 |
1/4" Shank Dia. | ||||||||
| 0.2" | 0.24" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.24" | 0.28" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.26" | 0.28" | 60,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.32" | 0.32" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.34" | 0.32" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.39" | 0.39" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.47" | 0.39" | 30,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 000000 | 00000 |
| 0.59" | 0.39" | 20,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 0.73" | 0.39" | 20,000 | Cylindrical | Boron Nitride | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |