NSK Ltd
6471.TMEDIUMScore: 48.9Motor Components / EV Precision Bearings · Weight: 2%· Data as of 2026-05-20
Investment Thesis
NSK is Japan's leading precision bearing maker and a Tier-1 Honda supplier, positioned to benefit from the structural shift to EV motors which require 40% more high-precision bearings than ICE drivetrains by 2030. NSK's proprietary insulated bearings (ceramic and PPS-coated) prevent electrical erosion in inverter-driven traction motors — a critical failure mode that standard bearings cannot handle. The NSK-NTN merger MoU (May 2026) creates the world's #1 bearing maker by revenue, with scale to invest in EV-specific product development and pricing power vs. European rivals (Schaeffler, SKF). Honda's UC3 hub motor in Vietnam/India and new India EV motorcycle factory (2028) directly expand NSK bearing demand. Currently at cyclical trough earnings (ROE 1.8%, op margin 3%) with forward PE 22.7x vs. trailing 32x — structural earnings recovery expected as automotive demand normalizes and EV mix grows.
Risk
ROE at 1.8% and operating margin at 2.96% reflect deep cyclical trough — if automotive production stays depressed into 2027, recovery delayed. Merger with NTN (closing Oct 2027) carries integration risk and management distraction. Schaeffler and SKF are investing heavily in EV bearings and could close the technology gap. If solid-state batteries/motors reduce bearing count per motor, long-term structural demand could disappoint.
Monitoring Trigger
Add on confirmation that NSK-NTN definitive agreement signed (target: Nov 2026). Trim if op margin fails to recover above 5% by FY2027 results. Watch NSK quarterly earnings for EV bearing revenue breakout.
Key Dates
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Business Segments
| Segment | Revenue | Share | Description |
|---|---|---|---|
| Industrial Machinery | |||
| Automotive | |||
| Other |
Supply Chain Evidence
| Evidence | Customer | Product | Detail |
|---|---|---|---|
| probable | Honda Motor (7267.T) | Hub motor and wheel bearings for Honda UC3 e-motorcycle in Vietnam/Thailand | Honda UC3 uses in-house developed hub motor; NSK is a confirmed Tier-1 Honda supplier for automotive and motorcycle drivetrain bearings. NSK specifically lists 'electrification products' including hub unit bearings on their official product pages. |
| confirmed | Multiple EV manufacturers (global) | Insulated traction motor bearings (ceramic/PPS-coated) to prevent inverter-induced electrical erosion | NSK publicly released insulated bearing products specifically developed for EV traction motors. Ceramic and PPS plastic over-moulded versions documented in NSK technical publications. Addresses fundamental failure mode where inverter harmonics induce current flow through bearings. |
| confirmed | NSK + NTN merger entity (world #1 bearing maker) | Business integration — ¥1.7T combined revenue, joint holding company Oct 2027 | NSK and NTN signed MoU for business integration via joint holding company. Combined entity targets world #1 bearing position driven by EV demand requiring 40% more bearings by 2030. Regulatory approval from Japan and EU authorities required. |