AI Liquid Cooling: A Trillion-Yuan Market Opportunity – Can Machine Tools Seize It?

The booming development of AI computing power has driven the explosive growth of liquid cooling. According to CCID Consulting, China’s overall market size of liquid-cooled data centers reached RMB 15.98 billion in 2025, a year-on-year increase of 45.2%, and is projected to hit RMB 23.25 billion in 2026. CICC forecasts that the global liquid cooling market for intelligent computing centers will exceed RMB 114.7 billion in 2026, representing a 273% year-on-year surge. Data from CAICT shows that the liquid cooling penetration rate of AI training servers has reached 74%. Liquid cooling is evolving from an optional feature to a mandatory requirement, and 2026 is widely recognized in the industry as the "Year of Large-scale Liquid Cooling Deployment".

The real opportunity for the machine tool industry does not lie in server manufacturing, but in the sophisticated liquid cooling structural components behind servers: cold plates, vapor chambers, heat sinks, manifolds and quick disconnect couplings. Cold-plate liquid cooling dominates the market. As rack power density rises to over 100kW per cabinet, microchannels and pin-fin structures grow increasingly complex, raising requirements for the precision and efficiency of CNC machining.

What Are the Core Difficulties in Machining Liquid Cooling Components?

A seemingly simple cold plate carries stringent machining requirements: the tolerance of channel width and depth must be controlled within ±0.02~0.05 mm, flatness of sealing surfaces ≤0.05 mm, and surface roughness Ra ≤0.8 μm. Manifolds, quick couplings and other parts also require machining of complex angles, threads and sealing surfaces. Mixed production of aluminum alloy, copper and other materials, together with warpage risks for large-size plates, further complicates production.

Channels with low roughness, burr-free edges and consistent tolerances are prerequisites for cold plates to pass air tightness and pressure resistance tests. Any leakage may cause the entire cabinet to shut down. Machining liquid cooling components is no longer merely about basic manufacturability; it demands superior quality, stable output and high throughput.

How Customers Select Machine Tools: Start with Workpieces, Evaluate Three Key Metrics

The selection logic is straightforward. First classify workpiece types: vertical machining centers with high rigidity are preferred for flat cold plates, heat sinks and vapor chamber bases. Turning or turn-mill centers suit rotary parts such as manifolds and pipe fittings. Five-axis or multi-tasking machines are recommended for complex multi-angle manifolds and integrated assemblies.

Three critical indicators must be assessed:

1. Rigidity: determines stability during heavy cutting and long-term precision retention.
2. Thermal stability: guarantees consistency in mass production.
3. Spindle speed & precision: controls the quality of microchannel features. Production capacity planning should also be considered, including automation options such as gantry loaders and robotic material handling after mass production launch.

DN Solutions: Recommended Models for This Industry

For flat parts and channel components including cold plates, heat sinks and vapor chambers: the DNM series vertical machining centers are recommended. With global sales exceeding 30,000 units, the DNM series is equipped with direct-drive spindles and roller linear guides, paired with a high-rigidity machine base. Optional high-speed spindles and thermal distortion compensation make it ideal for finish machining of channels and sealing surfaces on aluminum alloy and copper cold plates.

For rotary parts such as manifolds, quick couplings and pipe fittings: Lynx and PUMA series turning centers are recommended. For complex multi-angle manifolds and integrated assemblies, SMX turn-mill centers or DNM 5AX five-axis machining centers can complete turning, milling, drilling and tapping in a single setup, eliminating positioning errors from repeated clamping.

Core Strengths of DN  Solutions

• High Rigidity: Resin sand cast machine base with symmetrical layout. The monolithic high-strength gray cast iron delivers over 30% higher overall rigidity compared with conventional structures, ensuring stable heavy cutting.
• High Precision: Direct-drive spindles reduce vibration and noise. Coupled with thermal distortion compensation, consistent precision is maintained during prolonged mass production.
• High Efficiency: Optimized chip-to-chip tool change time and axis acceleration & deceleration performance greatly boost throughput for mass production of liquid cooling components.
• Service Support: DN Machine Tools operates 4 subsidiaries, 35 distributors, 47 technology centers and 223 service networks across China. Shenming Technology, a leading agent of DN Machine Tools in China, provides localized services ranging from process verification and machine selection to full-lifecycle after-sales support.

Before Chasing Dividends: Clarify These Three Points

For enterprises planning to enter the AI liquid cooling component machining sector, do not make machine tool investment decisions solely based on market hype. Clarify three core questions first: whether target workpieces are flat cold plates or rotary manifolds, the required precision and rigidity specifications, and whether automation will be needed after mass production. After sorting out these points, engage professional teams for process verification to securely capture this market opportunity.

Liquid cooling machining represents dual upgrades in both process and equipment. Choosing the right machine tool matters more than simply chasing market trends.