Rolling Bearing Vibration Damping Patent Landscape
Rolling bearing vibration damping is a mature, moderately concentrated field anchored by established drivetrain and aerospace bearing specialists, with Schaeffler Technologies holding the leading position. Annual filings eased from a 2020 peak and the field is in a declining phase, though the breadth of adjacent application domains — from turbomachinery to electric motors — signals continued relevance for targeted R&D.
Schaeffler leads a moderately concentrated field with strong European and Japanese incumbents
Schaeffler Technologies AG & Co KG holds the top position with 428 patent records, ahead of General Electric Co and AB SKF, both at 371 patent records. Carl Freudenberg KG and IHI Corp follow at 307 patent records each, confirming a tiered but not winner-take-all competitive structure.
The top five filers account for 16% of the hundred largest filers’ combined total, indicating moderate concentration. No single company dominates to the exclusion of a broad second tier; the gap between the leader and the second rank is meaningful but not insurmountable for a well-resourced challenger.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | SCHAEFFLER TECHNOLOGIES AG & CO KG | 428 | |
| 2 | General Electric Company | 371 | |
| 3 | AB SKF | 371 | |
| 4 | Carl Freudenberg KG | 307 | |
| 5 | IHI Corporation | 307 | |
| 6 | NSK Ltd. | 301 | |
| 7 | NTN Corporation | 282 | |
| 8 | Hitachi Ltd. | 268 | |
| 9 | Honeywell International Inc. | 263 | |
| 10 | LUK LAMELLEN & KUPPLUNGSBAU BETEILIGUNGS KG | 262 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Valeo SA | 253 | |
| 12 | ZF Friedrichshafen AG | 242 | |
| 13 | Mitsubishi Heavy Industries Ltd. | 234 | |
| 14 | ZF Sachs AG | 221 | |
| 15 | Valeo Embrayages SAS | 216 | |
| 16 | United Technologies Corporation | 215 | |
| 17 | Oiles Corporation | 214 | |
| 18 | Audi AG | 198 | |
| 19 | KYB Corporation | 198 | |
| 20 | RTX Corporation | 190 |
The leaders span two strategic archetypes: pure bearing-and-coupling specialists (Schaeffler, SKF, NSK, NTN) and diversified industrial or aerospace primes (GE, Honeywell, IHI) who apply vibration damping in high-speed rotating machinery. This bifurcation implies that competitive positioning is application-domain-specific rather than technology-generic.
Patent records from the most recent 18–24 months are subject to publication lag and should be treated as undercount; the apparent drop in 2024–2026 filings does not necessarily reflect a real change in R&D commitment. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume peaked in 2020 and has eased; shafts-and-bearings plus vibration-damper classes dominate the technology mix
The annual trend and IPC composition charts together reveal both the lifecycle position of the field and the technical routes through which innovation is being channeled.
Annual filing trend
Filings grew from 688 records in 2017 to a peak of 869 in 2020, then eased to 579 in 2022 before a partial recovery to 596 in 2023. The 2024 and 2025 figures are substantially understated due to publication lag and should not be read as a sustained decline. The overall multi-year picture confirms a field past its growth peak.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F16C (Shafts, bearings and couplings) and F16F (Springs and vibration dampers) jointly account for the overwhelming majority of classified records, confirming these as the core technical routes. Adjacent classes — F01D (turbines), H02K (electric motors), and B60G (vehicle suspension) — each represent smaller but distinct application verticals, suggesting that the core damping technology is being diffused into several downstream sectors.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Bearing Vibration Damping Mechanism
A squeeze film damper for a bearing and a vibration damping mechanism capable of damping the vibration of a rolling bearing are provided. The squeeze film damper is small in construction and can be easily made by mass production. The vibration damping mechanism is capable of damping both radial and axial vibrations. A bearing housing <b>15</b> is provided… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Combined position sensor and magnetic motor or bea… | 1,252 |
| 2 | Diamond bearing assembly | 346 |
| 3 | Dynamically stable magnetic suspension/bearing sys… | 300 |
| 4 | Strut assembly with integral bearing and spring seat | 242 |
| 5 | Bearing damper system | 240 |
| 6 | Bearing support | 220 |
| 7 | Torque transmitting apparatus | 200 |
| 8 | Optical table active leveling and vibration cancel… | 200 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
Four structural observations — lifecycle stage, concentration, collaboration patterns, and geographic reach — shape the risk-return calculus for any new entrant or incumbent expanding their position.
Past-peak decline: annual volume has eased from its 2020 high
The lifecycle evidence classifies this field as Decline, with annual filings easing back from the 2020 peak of 869 records. A -29% recent-growth reading confirms the downward trajectory from that peak. For R&D teams, this signals that broad horizontal coverage is already dense; incremental filings in core F16C and F16F classes face a crowded prior-art landscape, and investment is better directed toward application-specific differentiation.
Lifecycle: DeclineModerate concentration with a clear tier gap below the top five
The top five filers hold 16% of the hundred largest filers’ combined total — concentrated enough that incumbents enjoy prior-art depth advantages, but not so locked up that a specialist entrant cannot establish a credible position. The gap between rank 5 (307 patent records) and rank 6 (301 patent records) is narrow, while the gap between rank 1 and rank 2 (428 vs. 371) is more pronounced. Challengers targeting a specific application vertical face lower barriers than those attempting head-on competition across the full bearing-damping space.
Moderate concentrationCo-filing is largely intra-corporate, with NTN–NTN Toyo Bearing the most active pair
The most active co-filing pair is NTN Corp and NTN Toyo Bearing Co Ltd with 7 joint records, reflecting parent-subsidiary coordination rather than external alliance. Carl Freudenberg KG and Hengst SE collaborated on 5 records, and Schaeffler Technologies AG & Co KG co-filed with Schaeffler Americas Inc on 4 records. SKF co-filed with subsidiaries in China, Japan, Korea, and France (2–3 records each), and NSK co-filed with NSK Steering Systems on 2 records. Schaeffler also co-filed with MTU Aero Engines AG on 2 records, representing one of the few cross-corporate aerospace pairings. Genuine cross-firm R&D alliances are sparse, suggesting an opportunity for consortium-based collaboration in emerging application domains.
Intra-corporate dominantUS leads by record volume; China and Europe are strong secondary offices
The United States is the leading jurisdiction, followed by China and Europe (EPO). Japan and the United Kingdom also carry substantial filings, and WIPO PCT entries confirm broad international prosecution strategies by the leading applicants. Emerging-market jurisdictions such as India, South Korea, and Australia show meaningful but secondary presence. For freedom-to-operate assessments, the US, CN, and EP trio represents the minimum viable clearance perimeter.
US · CN · EP coreGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| NTN Corporation | NTN TOYO BEARING CO LTD | 7 |
| Carl Freudenberg KG | Hengst SE | 5 |
| Schaeffler Technologies AG & Co KG | Schaeffler Group USA Inc. | 4 |
| AB SKF | SKF China Ltd. | 3 |
| AB SKF | SKF Japan Ltd. | 2 |
| AB SKF | SKF Korea Ltd. | 2 |
| AB SKF | SKF Aerospace France SAS | 2 |
| NSK Ltd. | NSK Steering Systems Co., Ltd. | 2 |
| Schaeffler Technologies AG & Co KG | MTU Aero Engines AG | 2 |
| NTN Corporation | Japan Aerospace Exploration Agency (JAXA) | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Schaeffler and GE lead distinct strategic routes: pure bearing expertise vs. turbomachinery integration
The top applicants diverge sharply in their IPC emphasis: bearing-and-coupling specialists concentrate on F16C subclasses, while aerospace and industrial primes combine F16C with F01D and F02C turbomachinery classes.
Schaeffler Technologies AG & Co KG
Schaeffler leads with 428 patent records, concentrated in F16C 33 (bearing components), F16C 19, and F16C 27 (bearing supports and housings) — a pure bearing-specialist profile. Recent momentum shows a –79% trend versus the prior period, the steepest deceleration among top filers, suggesting a deliberate portfolio consolidation rather than sustained organic growth in this specific technology cluster.
428 patent recordsGeneral Electric Co
General Electric Co holds 371 patent records with its primary emphasis in F01D 25 (turbine bearing supports), F16C 27, and F02C 7 (gas-turbine plants) — an aerospace and power-generation application profile distinct from pure bearing specialists. Recent momentum shows a –50% trend versus the prior period, in line with the broader field deceleration. GE’s combination of turbomachinery and bearing-support expertise positions it as the dominant aerospace-segment incumbent.
371 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| General Electric Company | 11 | ▼ -50% |
| AB SKF | 27 | ▼ -40% |
| NSK Ltd. | 20 | ▼ -20% |
| Schaeffler Technologies AG & Co KG | 8 | ▼ -79% |
| IHI Corporation | 13 | ▼ -54% |
| NTN Corporation | 1 | ▲ new entrant |
Under-served adjacent branches with plausible technical entry paths
Several IPC branches sit adjacent to the dominant F16C/F16F core and show relatively sparse coverage relative to their technical relevance — representing observations of relative sparsity that may warrant closer evaluation.
H02K · Electric motors & generators
With 1,248 patent records, H02K represents a relatively sparse branch given the scale of the electric-motor market and the well-known problem of bearing noise and vibration in traction motors and servo drives. As electrification of drivetrains accelerates, bearing damping solutions tailored to high-speed, high-pole-count motors are a plausible technical entry path. Applicants with existing F16C expertise could extend into this domain with targeted co-classification strategies.
Search this in Eureka →F03D · Wind motors (wind turbines)
F03D carries only 158 patent records in this corpus — sparse relative to the known severity of bearing-fatigue and vibration problems in wind turbine main shafts and gearbox bearings. Main-bearing damper design for large-diameter, low-speed turbine bearings represents a technically distinct challenge from automotive or aerospace applications, and the low prior-art density may offer freedom to maneuver for teams developing elastomeric or hydraulic damping inserts. Entry path is realistic for bearing or vibration-control specialists already supplying the wind sector.
Search this in Eureka →How leading applicants differ by IPC technology route
Route coverage across the main technology branches in the current evidence set.
| Player | F16F 15 · Springs & vibration dampers | F16C 27 · Shafts, bearings & couplings | F16C 33 · Shafts, bearings & couplings | F16C 17 · Shafts, bearings & couplings | F16C 32 · Shafts, bearings & couplings |
|---|---|---|---|---|---|
| IDE RUSSELL D | Strong · 110 | Strong · 89 | Strong · 77 | Strong · 126 | Strong · 107 |
| General Electric Company | Moderate · 74 | Strong · 184 | Moderate · 65 | Moderate · 59 | Moderate · 91 |
| Honeywell International Inc. | Moderate · 59 | Strong · 173 | Strong · 88 | Moderate · 66 | Absent |
| United Technologies Corporation | Moderate · 60 | Strong · 213 | Moderate · 66 | Emerging · 42 | Absent |
| IHI Corporation | Absent | Strong · 141 | Absent | Strong · 114 | Absent |
| Schaeffler Technologies AG & Co KG | Strong · 67 | Strong · 69 | Strong · 95 | Absent | Absent |
| AB SKF | Absent | Strong · 89 | Strong · 139 | Absent | Absent |
Frequently asked questions
The corpus covers 5,822 patent families in scope. Patent record counts used in applicant rankings are higher because a single family can be filed across multiple offices.
Schaeffler Technologies AG & Co KG holds the top position with 428 patent records, ahead of General Electric Co and AB SKF, each at 371 patent records.
The lifecycle evidence classifies the field as Decline. Annual filings peaked at 869 records in 2020 and have eased since, with a recent-window growth reading of -29%. The most recent 18–24 months of data are affected by publication lag and should be treated as an undercount.
The United States is the leading jurisdiction by patent record volume, followed by China and Europe (EPO). Japan and the United Kingdom also carry substantial records. A minimum viable clearance perimeter should cover US, CN, and EP.
F16C (Shafts, bearings and couplings) and F16F (Springs and vibration dampers) are the two dominant IPC classes. Adjacent classes including F01D (turbines), H02K (electric motors), and B60G (vehicle suspension) represent important but lower-density application verticals.
Evidence points to H02K (electric motors and generators) and F03D (wind turbines) as relatively sparse branches given their technical relevance to bearing vibration. Both carry substantially fewer patent records than the dominant F16C and F16F classes, and each has a plausible technical entry path for specialists extending from core bearing-damping expertise.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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