Rising Tungsten Carbide Costs: How Oil Skimmers Help CNC Shops Protect Their Tooling Investment | Abanaki
For CNC machine shops, tungsten carbide tooling has always been one of the most important — and expensive — operational investments. Every day, the cost of that investment grows.
In recent years, tungsten prices have risen significantly due to a combination of supply shortages, export controls, tariffs, and growing global demand. Because tungsten carbide is an essential wear-resistant material used in CNC inserts, drills, end mills, and cutting tools, these price increases directly impact machining operations across multiple industries.
CNC shops are searching for practical ways to reduce unnecessary wear, extend tool life, and control operating expenses. One often-overlooked solution is coolant maintenance with the use of oil skimmers.
Why Tungsten Carbide Tools Can Wear Out Faster Than Expected
Many shops focus on machining parameters like feeds, speeds, coatings, and toolpath optimization to maximize insert life. While these factors are critical, coolant condition also plays a major role in protecting tungsten carbide tooling.
Over time, tramp oil from machine ways, hydraulic systems, and lubricants contaminates coolant tanks. When this oil accumulates, problems begin to develop:
- Reduced cooling efficiency
- Poor heat transfer at the cutting zone
- Increased thermal stress on tooling
- Bacterial growth and coolant degradation
- Sludge buildup and clogged systems
When coolant quality declines, tungsten carbide tools are exposed to higher operating temperatures and unstable cutting conditions that accelerate edge wear, chipping, and premature insert failure.
In other words, dirty coolant can quietly shorten the life of expensive carbide tools.
The Relationship Between Oil Skimmers and Tungsten Carbide Tool Life
Oil skimmers help solve this problem by continuously removing floating tramp oil from coolant systems. By keeping coolant cleaner and more stable, oil skimmers help CNC machines maintain proper lubrication and heat transfer during machining operations, directly impacting the performance and lifespan of tungsten carbide tooling.
Benefits of using an oil skimmer include:
Extended Coolant Life
Removing tramp oil slows coolant degradation and reduces the frequency of coolant replacement.
Reduced Thermal Stress on Tooling
Cleaner coolant improves heat dissipation at the cutting edge, helping tungsten carbide maintain its hardness and wear resistance longer.
Longer Tool Life
Stable coolant conditions reduce premature wear, edge chipping, and insert failure.
Reduced Maintenance and Downtime
Cleaner systems experience fewer clogs, odors, bacterial issues, and maintenance interruptions.
Lower Operating Costs
Fewer insert changes and extended coolant life help offset rising carbide tooling costs.
Why This Matters More Than Ever
With tungsten carbide prices expected to remain elevated, every tool change carries a greater financial impact than before.
That makes coolant maintenance more than routine housekeeping: it becomes a strategic way to protect tooling investments and improve operational efficiency.
While oil skimmers cannot reduce the global cost of tungsten, they are one of the simplest upgrades CNC shops can implement to help increase the lifetime of expensive carbide tooling.
A Simple Solution with Long-Term Impact
By continuously removing tramp oil before it creates larger problems, skimmers help CNC shops:
- Protect tungsten carbide tooling
- Improve machining consistency
- Reduce coolant maintenance
- Lower downtime
- Extend the life of critical machine components
Proactive coolant management with the use of oil skimmers can make a difference on the shop floor and the bottom line– not only for maintenance, but for building a smarter strategy to protect tungsten carbide investments.
