Technical Guide
Technical Guide for Precision Cutting
Technical Guide
KOHER provides practical technical information to help customers select the right PCD, CBN, and diamond cutting tools for their machining environment.
Machine operators always strive for precision, repeatability, and perfection.
KOHER’s diamond cutting tools are engineered to help achieve them.
Built on advanced manufacturing capabilities and in-house R&D, KOHER provides high-performance PCD, CBN, and diamond cutting
tools for demanding machining applications. From ISO-standard inserts to customized solutions and technical support, KOHER helps
customers gain stronger cutting performance, longer tool life, and greater machining reliability.
PCD Grade
KP01 [<1㎛]
Super fine grade provides extreamly good surface
roughness for precision machining of non-ferrous metals and non-metals.
- Cylinder block of Automotives
KP05 [AVERAGE 5㎛]
General purpose with fine surface finishing.
- Graphite, Copper alloy
- Wood composites
KP10 [AVERAGE 10㎛]
General use for turning aluminum alloy
- <10% silicon aluminum alloy
KPC [Over 25㎛]
Higher wear resistance and impact resistance.
Suitable for hard to cut materials with wear.
- >14% Silicon aluminum alloy
- Sintered tungsten carbide
KP302 [2 + 30㎛]
Higher impact and wear resistance.
Bi-modal mixed grain structure.
- Stone sawing
- >14% Silicon aluminum alloy, CFRP / GFRP, Ceramic, Tungsten carbide
PCD Application
Automotive
Aluminum alloy
• Transmission Case
• Aluminum Alloy wheels
• Pistons
• Cylinder heads
Aerospace
Aluminum alloy & Others
• Airplane wings
• Turbine blades
Electronics
Aluminum alloy & Others
• PCB
• Mobile phone casing
• Hard disk casing
• DVD Cover
Wood
Woods
• Furniture
• Wood floor
HARD TURNING CBN Guide
KB404
Strong performance for Continuous Hard Turning process which causes wear and heat problem. Suitable for both wet and dry process.
- Type: NX
- CBN Content: 40%
- CBN Grain Size: 2-3㎛
- Bond: TiCN
KB504
Strong performance for Continuous Hard Turning process which causes wear and heat problem.
- Type: NX
- CBN Content: 50%
- CBN Grain Size: 1-4㎛
- Bond: TiCN
KB601
Unique CBN tip design with stronger vacuum brazing system. Optimized for light interrupted cut.
- Type: NX, HS, TS
- CBN Content: 60~65%
- CBN Grain Size: 1㎛
- Bond: TiCN
KB604
60% CBN tip for continuous to medium cut of hardened
steel with superior flank wear resistant.
- Type: NX
- CBN Content: 60-65%
- CBN Grain Size: 2-4㎛
- Bond: TiCN
KB620
KOHER’s stronger Tip Solid for High Speed interrupted cut.
- Type: NX, HS, TS
- CBN Content: 60%
- CBN Grain Size: 2㎛
- Bond: TiCN
Coating CBN Series Grade
KB902
90% CBN tip for interrupted purpose of Cast Iron / Sintered Alloy machining process.
- Type: NX
- CBN Content: 90%
- CBN Grain Size: 1㎛
- Bond: TiCN
KB951
95% CBN tip for continuous to medium cut of Cast Iron / Sintered Alloy with good wear resistant.
- Type: NX
- CBN Content: 95%
- CBN Grain Size: 3㎛
- Bond: Titanium alloy
KB952
Rough or Semi-finishing process of Cast Iron / Sintered alloy turning and milling process.
- Type: NX
- CBN Content: 95%
- CBN Grain Size: 3㎛
- Bond: Titanium alloy
CBN Application
Automotive
Cast Iron
• Engine Block
• Brake Disc
• Clutch Plates
• Rolls
• Pumps
Automotive
Hardened Steel
• Gears
• Transmission parts
• Gear shafts
• Bearing, Hub
• Dies, Punches
Automotive
Powder Metal
• Valve Seat
• Con-rods
• Oil-pumps
Aerospace
Super Alloy
• Turbine blades
• Turbine vane
NEW CBN Line up
KOHER HS / TS / Coating Series
KOHER Half CBN Solid(HS) and Tip CBN Solid(TS) Series will give you the best performance from continuous to high interrupted turning process which frequently cause severe damage from the high impact turning.
KOHER HS CBN Series
KOHER TS CBN Series
KOHER Coated CBN Series
KOHER’s New Coating Series line up is now available.
Not only providing you ISO Standard inserts, but also suggesting you to choose various coating grade in order to meet your tool life improvement.
N Series [TiN] - Gold
Titanium Nitride is general coating for edge retention and corrosion resistance on machine tooling. This is widely used in high content CBN or carbide drills.
T Series [AlTiN] - Blue black
T series is the most suitable coating for general hard turning of hardened steel machining with wide range of lubrication conditions.
It also shows great works on stainless steel and nickel alloys.
A Series [AlCrN] - Grey
This coating performs great on machining with high impact and wear resistance which reduces especially flank wear and cutting edge wear in wide range of cutting condition.
Coating S [Special]
Coating S, the special type, is providing excellent performance on hard-to-cut material machining process with multi-layered coating on CBN.