July 28, 2026 – The global bearing industry is experiencing growing patent activity in maintenance-free and self-lubricating bearing technologies, as manufacturers across ferrous metallurgy, renewable energy, automotive, and rail transportation sectors accelerate their pursuit of zero-maintenance solutions. From China burgeoning patent filings to established European and Japanese innovators unveiling next-generation solid lubrication designs, the race to eliminate bearing maintenance is reshaping industrial equipment reliability standards worldwide.
| Trend | Industry Direction |
|---|---|
| Maintenance | Shift toward maintenance-free and reduced-maintenance designs |
| Lubrication | Increased adoption of solid and self-lubricating systems |
| Temperature | Growing demand for high-temperature bearing solutions |
| Environment | Reduced dependence on grease and oil lubrication |
| Applications | Growth in EV, wind power, rail transit and metallurgy |
| Innovation | Increasing patent activity in self-lubricating technologies |
| Customization | More demand for application-specific bearing designs |
The past 18 months have seen a remarkable surge in maintenance-free bearing patent applications from Chinese manufacturers, signaling the nation’s growing technological prowess in self-lubricating bearing solutions.
On June 6, 2026, China National Intellectual Property Administration published patent application CN122148651A filed by Fujian Longxi Bearing (Group) Co., Ltd. for a “maintenance-free spherical plain bearing assembly unit.”
The patent covers an innovative combination of asymmetric maintenance-free spherical plain bearings and maintenance-free thrust spherical plain bearings, engineered to withstand both substantial axial loads and significant radial loads simultaneously. The design maintains high load-carrying capacity even under extreme conditions while offering compact dimensions, low friction, and extended service life.
On July 11, 2026, Jiangxi Jiangling Chassis Co., Ltd. published patent CN122354110A for a “lifetime maintenance-free hub unit for new energy commercial vehicles and its assembly method.”
The innovation replaces traditional bearing outer rings with hub outer rings, increasing roller dimensions within limited space to enhance load capacity and fatigue resistance—enabling long-life, lifetime maintenance-free operation of wheel-end structures.
On June 13, 2026, Yunda Energy Technology Group Co., Ltd. published patent CN122191004A for a “wind turbine pitch bearing and hub pitch bolt maintenance-free structure and installation method.”
The device addresses the critical industry challenge of pitch bolt loosening and failure, significantly reducing maintenance risks and improving maintenance efficiency in wind turbine operations.
On May 19, 2026, Chengdu Tianma Railway Bearing Co., Ltd. published patent CN122058965A for a “maintenance-free spherical plain bearing unit for rail transit vehicle bogies.”
The patent encompasses load-bearing modules, active modules, dual sealing modules, and detection modules, enabling long-period maintenance-free operation while ensuring safety.
On July 24, 2026, Changsheng Bearing (300718) received a utility model patent for a “conductive contact forming equipment for self-lubricating bearings.”
The equipment punches holes in product surfaces and stretches the hole edges via a stretching section to achieve effective contact protrusion for stable conductivity—enabling single-pass forming with high production efficiency.
On February 4, 2026, Jiashan Kaisheng Sliding Bearing Co., Ltd. was granted patent CN223868399U for a “solid self-lubricating bearing with release flow guide structure.”
On August 4, 2025, Renben Co., Ltd., Shanghai Renben Group Co., Ltd., and Huangshi Renben Bearing Co., Ltd. jointly published patent CN120404144A for a “full-condition simulation tester for truck hub maintenance-free bearings.”
The device addresses the industry gap in multi-condition simulation testing for truck hub bearings.
Addressing the persistent challenge of frequent maintenance required for pumping unit bearings in China’s oil fields, Northwest Bearing developed a patented maintenance-free sealed spherical roller bearing featuring a contact skeleton seal structure. The bearing achieves an 8–10 year maintenance-free cycle under field operating conditions, with some bearings boasting a theoretical service life exceeding 20 years.
According to DPA Magazine, NSK is redefining high-temperature bearing performance parameters with its new patented “SJ” series bearing design—the latest addition to the NSK Spacea bearing line.The bearing withstands temperatures up to 400°C in both atmospheric and vacuum environments. Key design innovations include special cage pockets containing solid lubricant separator blocks positioned between two specially treated balls. The design continuously delivers lubricant (sintered molybdenum disulfide) via the separator blocks, extending service life six times longer than bearings using solid lubricant paste. The combination of balls and separator blocks delivers torque stability surpassing traditional silver-plated bearings even under demanding vacuum conditions.
On May 28, 2026, igus introduced a maintenance-free hybrid ball bearing from its xiros series, specifically designed for overhead conveyor systems in high-dust environments.Manufactured from stainless steel and high-performance plastic, the bearing operates without lubrication while resisting dust ingress, with load capacity reaching 39 kg. Key innovation: stainless steel inner rings (for maximum surface pressure resistance), stainless steel balls of different alloys, and high-performance polymer iglidur J3 cages. The combination suits industrial, logistics, furniture manufacturing, and packaging system applications, available in 8mm, 10mm, and 12mm inner diameters.
At bauma Munich 2025, Schaeffler introduced a new concept—1:1 replacement of tapered roller bearings in construction machinery kingpins and chassis joints with maintenance-free, dry-running plain bearings equipped with solid lubricants. These patented bearings feature high-performance Elgoglide sliding layers capable of withstanding dynamic contact pressures up to 300 N/mm². Durability tests show extremely low wear rates, and the bearings eliminate the need for periodic regreasing—preventing grease from seeping into soil with significant environmental benefits.
In September 2025, igus launched the iglidur PRT-04 series new compact slewing ring bearing. Thanks to lubrication-free high-performance plastic in the sliding elements, the bearing achieves maintenance-free design—minimizing friction and wear without lubrication, particularly suited for increasingly compact installation spaces in mechanical engineering.
On June 18, 2025, Saint-Gobain’s patent EP2139675 was granted, covering maintenance-free plain bearing technology with an application date to October 2007.
ISO/NP 25994 marks the sixth international standard proposal led by China in the rolling bearing sector.The standard covers PTFE fabric-lined self-lubricating spherical plain bearings, characterized by maintenance-free operation, self-lubrication, low friction, high load capacity, high wear resistance, and long service life.
Amid this wave of maintenance-free bearing innovation, Mighty Way Industrial Limited (MTWB) stands as a specialized manufacturer delivering engineered solid lubrication bearing solutions for demanding industrial applications.
MTWB Solid Lubrication Bearings are engineered specifically for applications where conventional lubrication is difficult, impossible, or uneconomical. Designed with embedded solid lubricants, these bearings provide reliable self-lubricating performance under high loads, low speeds, high temperatures (up to 200°C), dusty environments, and heavy industrial operating conditions.
How It Works: A polymer material is injected into the bearing through a specialized process. The polymer adsorbs saturated lubricating oil, ensuring continuous contact with raceways and rollers while effectively preventing contaminants from entering the bearing interior. The lubricating oil is “stored” in micropores within the polymer based on surface tension; during operation, oil slowly migrates to the material surface via capillary action; when operation ceases, the oil re-adheres to the polymer for “storage”—creating a self-sustaining lubrication cycle.
Solid Lubrication DGBB Deep Groove Ball Bearing
Solid Lubrication CRB Cylindrical Roller Bearing
Solid Lubrication TRB Tapered Roller Bearing
Solid Lubrication NRB Needle Roller Bearing
Solid Lubricant SRB Spherical Roller Bearing
Solid Lubricant Rotary Support
Since 2015, MTWB has specialized in the production of micro-size, low-noise ball bearings and flanged thin-section bearings.The company exercises stringent control over quality and workmanship at every stage, from raw material steel tubes to finished bearings. With more than 18 years of experience in sourcing and technical consultancy, MTWB bridges the advantages of Hong Kong quality control and cost-efficient manufacturing in China.
MTWB provides custom-made bearings to meet unique customer requirements, including non-standard dimensions, special materials or seals, and small-batch prototype orders.MTWB’s experienced engineers and sourcing team offer complete technical support from sample design to mass production, making MTWB an ideal OEM bearing partner for international brands.
In July 2026, MTWB launched its new official website (www.mtwb-customized-bearing.com), designed for procurement managers, mechanical engineers, equipment manufacturers, and industrial distributors. The platform introduces MTWB’s complete Customized Bearing & Services model, enabling customers to move efficiently from technical consultation and drawing evaluation to prototype development, production, quality inspection, and worldwide delivery.
MTWB Solid Lubrication Bearings are widely deployed across ferrous metallurgy operations, including rolling mills (successfully applied in take-up machines of 1.7m rolling mills and two-high cold-rolling mills), continuous casting machines, steel mill equipment, heavy industrial machinery, and metal processing equipment.
The accelerating pace of maintenance-free bearing patents and product launches reflects a fundamental shift in industrial equipment design philosophy. As industries from metallurgy to renewable energy demand higher reliability, longer service life, and reduced environmental impact, maintenance-free bearing technologies—particularly solid lubrication solutions—are positioned to become the new industry standard.
MTWB solid lubrication bearing technology, combining polymer matrix adsorption, capillary action lubrication delivery, and contamination-resistant design, represents a proven solution aligned with this global trend toward zero-maintenance industrial operations.
For media inquiries, please contact:
Mighty Way Industrial Limited (MTWB)
Email: sales@mtwbearing.com
Website: www.mtwb-customized-bearing.com
Address: Room 13-15, 19/F, Nan Fung Centre, 264-298 Castle Peak Road, Tsuen Wan, N.T., Hong Kong
The latest solid lubrication bearing trends in 2026 include growing demand for maintenance-free and self-lubricating bearing solutions, higher temperature resistance, improved contamination resistance, and longer service intervals. Solid lubrication technology is increasingly being adopted in demanding applications such as electric vehicles, wind power equipment, rail transit, metallurgy, mining and industrial automation. Manufacturers are also focusing on application-specific bearing designs that reduce lubrication requirements while improving reliability and operational efficiency.
Maintenance-free bearings are becoming more popular because they can reduce the need for regular relubrication, minimize maintenance downtime and lower the total cost of ownership. They are particularly valuable in applications where bearings are difficult to access or operate in dusty, humid, corrosive or high-temperature environments. By reducing dependence on conventional grease or oil lubrication, self-lubricating and solid lubrication bearings can help improve equipment availability and simplify maintenance management.
Demand for solid lubrication bearings is being driven by industries that require reliable operation with minimal maintenance. Key sectors include electric vehicles and e-mobility, wind power, rail transportation, metallurgy, mining, agricultural machinery, elevators, food processing equipment and industrial automation. These applications often require bearings that can operate reliably under high loads, contamination, temperature fluctuations or limited access for routine lubrication.
Yes, certain solid lubrication bearings are suitable for high-temperature applications when the bearing materials, solid lubricant system, clearance and operating conditions are properly selected. Compared with conventional grease-lubricated bearings, specialized solid lubrication solutions can maintain reliable performance in environments where conventional lubricants may degrade or require frequent replacement. The actual maximum operating temperature depends on the bearing design, materials, load, speed and application conditions, so technical validation is recommended for high-temperature applications.
Solid lubrication bearings reduce maintenance requirements by incorporating a solid lubricant or self-lubricating material into the bearing system, helping provide continuous lubrication during operation. This reduces or eliminates the need for frequent external grease or oil replenishment in suitable applications. As a result, equipment operators can potentially reduce relubrication work, maintenance downtime and lubricant consumption, especially when bearings are installed in difficult-to-access locations or harsh operating environments.
The future outlook for self-lubricating bearing technology is positive as industries increasingly seek lower-maintenance, more reliable and environmentally responsible solutions. Future development is expected to focus on improved solid lubricant materials, higher temperature resistance, greater load-carrying capability, longer service life and application-specific bearing designs. The growth of EVs, renewable energy, rail transportation, automation and smart manufacturing is also expected to create new opportunities for advanced self-lubricating bearing technologies.
Yes, solid lubrication bearings can be suitable for selected EV and e-mobility applications where reduced maintenance, compact design and reliable operation are important. Potential applications may include electric drive systems, auxiliary systems, steering mechanisms and other components, depending on the specific bearing requirements. The appropriate bearing type and lubrication system should be selected according to operating speed, load, temperature, electrical environment, contamination and service-life requirements.
Yes. MTWB can provide customized solid lubrication bearing solutions for industrial applications based on specific operating requirements. Customization may include bearing type, dimensions, materials, solid lubricant formulation, internal clearance, sealing configuration and other application-specific requirements. MTWB works with OEMs, engineers and industrial customers to develop solid lubrication bearing solutions designed for demanding environments, reduced-maintenance operation and specific equipment requirements.
