Nabtesco
6268.THIGHPrecision Gears (Robot Joints) · Weight: 10%· Data as of 2026-05-16
Investment Thesis
RV precision reducer specialist — globally dominant in industrial robot joint reducers and one of three Japanese RV reducer leaders (alongside HDS and Sumitomo Heavy). Featured prominently in Morgan Stanley Humanoid 100 supply chain report. Each humanoid arm + waist joint that isn't using a harmonic drive is using an RV-style reducer where Nabtesco is the gold standard. Stock +128% 52w but FY26 earnings +55% YoY on revenue -4.8% = real margin expansion, not just multiple inflation. PE 31x Fwd is reasonable for the humanoid catalyst. UPGRADED MEDIUM -> HIGH.
Risk
Same Suzhou Green Harmonic / LeaderDrive / ZTL Servotronix China-price pressure as HDS, but Nabtesco's industrial robot anchor business (Fanuc / Yaskawa / ABB / KUKA design wins) provides a buffer that HDS doesn't have. AP01 watch: +128% 52w is heated; trim on any miss.
Monitoring Trigger
Quarterly robot-related gear orders. Humanoid OEM supply announcements.
Key Dates
Update History
GPT validation: 1) Real reducer relevance + aerospace ballast = defensible positioning. 2) Named...
Fundamentals now populated from StockAnalysis (were all N/A). PE 41.23, Fwd PE 29.04, Cap ¥559B. FY2026 guidance: ¥327B rev (+6.2%).
Conviction MEDIUM -> HIGH. FY26 earnings +55% YoY confirms margin expansion (not just multiple). Featured in MS Humanoid 100 + named in humanoid reducer market intelligence as one of top JP leaders. China threat real but industrial robot anchor cushions the impact.
Key Metrics
Business Segments
| Segment | Revenue | Share | Description |
|---|---|---|---|
| Precision Equipment | N/A | ~50% | RV gears for robot joints (60%+ global share) |
| Transport Equipment | N/A | ~25% | Rail doors, marine equipment |
| Aerospace | N/A | ~25% | Flight control actuators (defense) |
Supply Chain Evidence
| Evidence | Customer | Product | Detail |
|---|---|---|---|
| confirmed | Fanuc / Yaskawa / ABB / KUKA | RV reduction gears for robot joints | 60%+ of global industrial robot joints use Nabtesco RV gears[source](2025-01) |
| confirmed | Boeing / defense | Flight control actuators | Aircraft actuation systems[source](2025-01) |
| inferred | Humanoid OEMs | Precision gears for humanoid joints | Adapting RV gears for humanoid applications |
Primary IR Documentation
Values and insights cited from official company IR releases (earnings, 決算短信, MoUs, presentations).
Cites: Q1 FY2026 sales +16.9%, OP +68.3%; FY2026 full-year guidance EPS JPY 158.72 / Fwd PE 35.6x
https://www.nabtesco.com/en/about/ir/library/settlement/
Cites: Medium-term plan referenced for humanoid robot reducer thesis
https://www.nabtesco.com/en/about/ir/library/
Sources & References
Peer Comparison
| Company | PE | Fwd PE | ROE | Op Margin | FCF |
|---|---|---|---|---|---|
| Fanuc | 45.7 | 38.6 | 9.35% | 21.4% | N/A |
| Yaskawa Electric | 21.38 | 29.16 | 7.84% | 8.7% | +¥11.8B |
| Keyence | 40 | 38 | 12.4% | 51.0% | N/A |
| Kawasaki Heavy Industries | 25.35 | 31.65 | N/A | 5.3% | +¥46.9B |
| Harmonic Drive Systems | 458.8 | 164.1 | 5.9% | 7.9% | N/A |
| Omron | 38 | 22.57 | 2.3% | 6.1% | +¥5.9B |
| Nabtesco | 40.8 | 35.6 | 5.46% | 6.78% | +¥19.6B |
| Nidec Corp | 6.3% | 5.0% | +¥174B | ||
| Daifuku | 38-41x TTM | 27.92 | 18.38% | 15.26% | +¥53.9B |
| Denso | 13.93 | 9.62 | 7.89% | 6.69% | +¥201.2B |
| THK | 58 | 37.4 | 3.22% | 6.75% | +¥23.9B |
| Hamamatsu Photonics | 45.68 | 38.54 | 4.12% | 6.70% | N/A |
| Cyberdyne | N/A | 125.47 | -0.13% | -11.95% | -¥222M |
| MinebeaMitsumi | 18.66 | 13.75 | 9.1% | 6.5% | +¥16B |
| SMC Corporation | 26 | 27.2 | 7.9% | ~20% | +¥99B |
| MISUMI Group | 21.33 | 18.7 | 9.4% | 10.4% | +¥32B |
| NSK Ltd. | 26 | 24.7 | N/A | N/A | N/A |
| SANYO DENKI | 30.7 | 21.9 | N/A | N/A | N/A |
| Mabuchi Motor | 13.6 | 18.3 | N/A | N/A | N/A |
| NTN Corporation | 16.3 | 16.3 | N/A | N/A | N/A |