The mechanism deep-dive: how full direct-drive bypasses the West's ball-screw lock, the Kerex case, and the nanosecond motion-algorithm shift.
Translated Insight · WeChat Intel
Chinese CNC Is Pushing Western Machines Off the Frontline
Translated & credibility-rated from a Chinese-language industry analysis account · Figures as of August 2026 · Prepared for overseas buyers and partners. ← Back to GREE CNC · China CNC Daily Insights →
Contents
- Executive Summary
- 1 · The Two "Deadlocks" That Locked China Out
- 2 · Breaking Both Locks: Full Direct-Drive + Self-Made PWM Brain
- 3 · The Real Battlefield: AI-Server Cold Plates (0.1–0.2 mm)
- 4 · Why New Industries = a Clean-Sheet Win
- 5 · What It Means for Buyers (Evaluation Guide)
- 6 · Key Data & Credibility Rating
- 7 · Source & Credibility Note
Chinese CNC makers are not only catching up on the legacy ball-screw machine — a cluster is going around it, with full electromagnetic direct-drive (no ball screw at all) plus a self-made PWM (pulse-width-modulation) CNC "brain."
- The proving ground is the newest, highest-value lines: AI-server copper liquid-cooling plates with 0.1–0.2 mm micro-channels, and semiconductor tooling — greenfield production with no legacy Western equipment to displace, where the best technology wins on merit.
- For overseas buyers the practical takeaway: in specific high-mix, high-precision part families (cold plates, 3C, EV structural parts, molds), a credible Chinese direct-drive machine can now displace a Makino / GF / Röders-class machine at a fraction of cost — but verify the controller tier, the accuracy-retention data and the spare-parts lead time before you commit.
- One line: the "system + algorithm + supply chain" combo is a genuine route past the single-point craft gap — the hard numbers, though, are vendor / self-media claims, not independently audited.
1 · The Two "Deadlocks" That Locked China Out
The article frames the old constraint as two interlocking "deadlocks" (死结) that confined Chinese machine tools to the low end for decades:
1.1 · The physical deadlock — the ball screw (滚珠丝杠)
A conventional machine moves its table through a ball screw: a motor turns, a coupling turns the screw, the screw drives the nut, the nut pushes the table. Every joint is mechanical contact — friction, thermal drift under high speed, and a few microns of built-in backlash. Western makers spent roughly a century perfecting the materials and grinding of this part, so a late entrant started the race already behind.
1.2 · The software deadlock — the closed-source CNC "brain"
On top of that sits the CNC system (FANUC / Siemens), described in the piece as a "black box" whose底层 code is never disclosed. A widely-reported industry concern (specific instances are not independently verified) is that some imported high-end machines carry sensors / positioning modules that can remotely lock the unit if it is moved or paired with another system — turning a capital asset into something that needs a foreign engineer's key to unlock. concern, unverified
The read for buyers: these two locks are why "just copy the German machine" never worked. The interesting move — and the subject of this translated piece — is not copying, but changing the rules of the game.
2 · Breaking Both Locks at Once: Full Direct-Drive + Self-Made PWM Brain
2.1 · Full direct-drive (全直驱) deletes the middleman
Instead of pushing the table through a screw, the direct-drive architecture removes the coupling, screw and nut entirely. The table rides an electromagnetic field — the article's analogy is a maglev train — so a change in current produces motion directly. The result: zero backlash, no screw wear, and responsiveness at the nanosecond scale, ideal for soft, tool-sticking materials such as red copper.
2.2 · A self-made PWM CNC system as the "brain"
The article credits a self-developed PWM (pulse-width-modulation) CNC system that controls electromagnetic force with high-frequency pulses. It claims the response latency was cut from roughly 100 µs to under 1 ns — a stated ~100,000× speed-up — comparing the jump to "going from 8-bit pixels to 8K." vendor claim, unverified
2.3 · Localization claimed at 99.9%
The piece states the core parts — high-end drivers, the Halbach permanent-magnet array and the control boards — are ~99.9% domestically sourced, so the "lock, the door frame and the building" were all replaced rather than picked. single-source claim Industry coverage ties this narrative to a domestic full-direct-drive CNC maker's STAR-market IPO filing (commonly identified as Kerex / 钶锐锶) updated at the Shanghai exchange in August 2026.
Why this matters technically: direct-drive swaps a single-point craft gap (century-old screw grinding) for a system-level capability (electromagnetics + power electronics + servo algorithms + supply chain). That is a genuinely different competitive axis — and it is the throughline of Gree's own in-house motion stack (linear motors, spindles, rotary tables).
3 · The Real Battlefield: AI-Server Cold Plates (0.1–0.2 mm)
The article's central, most buyer-relevant claim is where this shows up first:
- Why here: high-end GPUs now draw well over 1 kW, so air cooling fails and copper liquid-cooling plates become mandatory. Each plate needs thousands of micro-channels just 0.1–0.2 mm wide.
- Why Chinese direct-drive fits: red copper is soft and "sticks to the tool" (粘刀); machining it cleanly needs zero reverse-impact and nanosecond response — exactly the direct-drive + PWM strength. The piece argues this is what is pushing foreign equipment out of the most profitable frontline production lines.
- Credibility: the 0.1–0.2 mm micro-channel figure reflects real AI-server cold-plate specs (Medium); the "displacement of foreign equipment" framing is vendor / self-media narrative and should be read as directional, not audited.
Gree angle (greecnc.com): Gree's GA-GF3755 high-speed direct-drive profile machining center is positioned for exactly these NEV / AI cold-plate and long-aluminium part families (battery trays, front cabins, rear floors). The same direct-drive logic is what makes the cold-plate story credible for a Gree buyer — with the usual verification steps below.
4 · Why New Industries = a Clean-Sheet Win
The displacement argument only works on new production lines, and the article is explicit about why:
- Legacy lines are locked in. Traditional auto and similar older lines are already full of foreign equipment; swapping it is too expensive to be worth it.
- New industries have no baggage. AI servers, semiconductors, humanoid robots and EV lines are greenfield — the best technology wins on merit, not on installed base.
- China's combo advantage. a complete rare-earth permanent-magnet + power-electronics + servo-algorithm chain is something full direct-drive packages together — turning a western "physical lock" into a non-event.
5 · What It Means for Buyers (Evaluation Guide)
If you are a buyer, the honest split is:
Chinese direct-drive likely wins when: the work is high-mix, thin-wall, or soft / tool-sticking parts (liquid-cooling plates, 3C, EV long profiles, molds) where speed, zero-backlash and total cost dominate. Expect a fraction of German / Japanese pricing and far shorter lead times.
German / Japanese still lead when: you need ultra-long-term accuracy retention, aerospace / defence certification, 7×24 mission-critical uptime, or a deep process database baked into the controller.
Five-point pre-purchase checklist: (1) confirm the controller tier — self-made PWM vs bought-in; (2) demand a real test-cut plus a ≥6-month accuracy re-inspection clause; (3) pin down the brand / source and spare-lead-time of scales, screws and other key parts; (4) verify CE / target-market compliance; (5) ask for a reference site in your exact industry.
6 · Key Data & Credibility Rating
| Claim | Source | Credibility |
|---|---|---|
| Western "Big-3" hold >60% of China's high-end market | Self-media / commonly cited industry figure | Medium |
| PWM latency 100 µs → <1 ns (≈100,000× faster) | Self-media account | Low (unverified) |
| Core-part localization ≈99.9% | Self-media / Kerex IPO coverage | Low–Medium |
| Cold-plate micro-channels 0.1–0.2 mm wide | Self-media / reflects real AI-server spec | Medium |
| Remote-lock / geofencing of imported machines | Widely-reported industry concern | Medium (instances unverified) |
7 · Source & Credibility Note
Source: 阿器谈史 (NetEase subscription account), 《中国机床杀出血路！自研数控系统+全直驱，把外资清出生产线！》, published 2026-08-09, citing People's Daily 《中国高端机床产业破局突围记》.
URL: https://www.163.com/dy/article/L3TDQLNH05566PS8.html
Single Chinese-language analysis account; figures not independently audited — verify before acting. This report is translated and re-framed for an overseas buyer audience; it is for reference only and is not procurement or investment advice. The "Japan 2026 export-control" narrative circulating in Chinese media is intentionally excluded here — it remains unconfirmed against primary METI sources and is not repeated on greecnc.com.
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URL: https://www.163.com/dy/article/L3TDQLNH05566PS8.html
Single Chinese-language analysis account; figures not independently audited — verify before acting. This report is translated and re-framed for an overseas buyer audience; it is for reference only and is not procurement or investment advice. The "Japan 2026 export-control" narrative circulating in Chinese media is intentionally excluded here — it remains unconfirmed against primary METI sources and is not repeated on greecnc.com.
Frequently asked questions
Is Chinese direct-drive CNC ready to replace German / Japanese machines?
In specific high-precision, high-mix part families (liquid-cooling plates, 3C, EV long profiles, molds) a credible Chinese direct-drive machine can displace a Makino / GF / Röders-class machine at a fraction of cost. For ultra-long-term accuracy retention, aerospace / defence certification and 7x24 mission-critical work, German and Japanese makers still lead.
What is "full direct-drive" and why does it matter?
Full direct-drive (全直驱) removes the ball screw and all intermediate transmission parts; the table is pushed directly by an electromagnetic field (a linear motor), like a maglev train. There is zero backlash, no screw wear and nanosecond-level responsiveness — ideal for soft, tool-sticking materials such as red copper.
Should I trust the "99.9% localization" and "100,000x faster" numbers?
Treat them as vendor / self-media claims, not independently audited facts. Verify the controller tier (self-made PWM vs bought-in) and request a documented test-cut plus a long-cycle accuracy re-inspection before relying on them.
Does this affect buying from Gree CNC (greecnc.com)?
Gree's own direct-drive models (e.g. the GA-GF3755 high-speed profile machining center) target exactly these cold-plate, long-aluminium and NEV part families. As with any Chinese machine, insist on a real test-cut, an accuracy-reinspection clause and confirmed compliance for your target market.
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