The third lubrication technology. Leak-free, washdown-ready, maintenance-free bearings for food, pharma, and harsh environments.
Traditional grease lubrication leaks, washes out under cleaning protocols, and demands constant reapplication. In food processing, pharmaceutical manufacturing, and wet environments, bearing failure isn't just costly — it's a contamination risk.
of bearing failures linked to lubrication issues
more maintenance vs. solid oil bearings
From food-grade washdowns to dusty agricultural fields — solid oil bearings perform where grease gives up.
The bearing cavity is fully filled with a microporous polymer matrix saturated with 2-4x more oil than conventional grease filling.
During operation, centrifugal force and frictional heat cause controlled oil release to bearing contact surfaces. When stopped, oil retracts into the polymer pores.
The polymer structure acts as a permanent oil reservoir. No grease migration. No relubrication intervals. Install and forget.
Solid oil bearings eliminate the contamination risks of grease leakage. They withstand high-pressure washdowns, resist chemical cleaning agents, and maintain performance across temperature extremes from -40°C to 165°C. With H1 food-grade certification and FDA 21 CFR 178.3570 compliance, they're the safe choice for critical environments.
Washdown-ready, H1 food-grade certified. No grease contamination risk.
Sterilization-resistant. Zero lubricant leakage in cleanroom environments.
Chemical agent resistance in dyeing environments. No grease staining on fabrics.
Elevators, conveyors, lifts — maintenance-free operation in hard-to-access installations.
Dust, mud, rain, and temperature swings. Sealed against the elements.
Water crossings, slurry, dust. Compact bearings with maximum durability.
Solid oil bearings operate within precise parameters. Select the right bearing type for your speed, load, and temperature requirements.
| BEARING TYPE | ndm LIMIT |
|---|---|
| Deep groove ball bearings | 300,000 |
| Double row ball bearings | 150,000 |
| Single row angular contact ball bearings | 150,000 |
| Self-aligning ball bearings | 150,000 |
| Cylindrical roller bearings | 150,000 |
| Tapered roller bearings | 45,000 |
| Spherical roller bearings (E-type) | 45,000 |
| Spherical roller bearings (other) | 85,000 |
| Thrust roller bearings | 45,000 |
| Insert bearings or units | 40,000 |
* Insert bearings: 36,000 for three-lip sealing; 21,000 for high-torque three-lip sealing. Consult our engineers for higher speed requirements.
Through Science, Silence, and Proven Performance
DMAG Bearing is a premier technical innovator specializing in high-performance precision bearings and advanced lubrication systems. Our foundation is built on an elite technical pedigree, led by a core engineering team from the first generation of university-trained bearing specialists in China, originating from the prestigious Bearing Research Institute (ZYS).
Technical Heritage: Decades of expertise from the pioneers of the Chinese industry.
Patented Performance: 30+ patents in solid lubrication and material science.
Proven Reliability: From deep-sea resistance to medical robotics.
With over 30 proprietary patents and 25 years of R&D, DMAG thrives where standard solutions fail. We provide world-class alternatives that meet or exceed the performance of global industry leaders.
Our Solid Oil (Plastic Oil) Bearings have been successfully deployed in Natural Gas Pipeline Inspection Robots. In rigorous field tests, DMAG's proprietary technology outperformed SKF, proving superior durability and maintenance-free performance in high-pressure, confined environments.
We have successfully developed Non-Magnetic Steel Bearings specifically for high-end medical equipment (such as MRI and diagnostic imaging), ensuring zero interference in sensitive magnetic fields.
Our dental division produces bearings capable of 580,000 RPM. Using Si3N4 Ceramic Balls and 440C Stainless Steel, we provide premium components compatible with NSK, KAVO, W&H, and Sirona.
Developed Ultra-Silent Bearing Assemblies for premium Italian shower systems. Engineered roller bearings capable of passing a 720-hour Salt Spray Test, delivering extreme corrosion resistance for marine and outdoor applications.
Cryogenic, Ultra-High Temp & Speed
Full/Hybrid Ceramic & Non-Magnetic
Manufactured to ISO P2 (ABEC 11)
High-load mechanical linkages
Get a free feasibility analysis and lubrication calculation for your application.