High Load Capacity · Automatic Misalignment Compensation · Stable Operation
Self-aligning roller bearings are a type of double-row roller bearing with a spherical outer ring raceway, providing self-aligning capability to accommodate shaft deflection or varying shaft misalignment. Main models include the 22200, 22300, 23000, and 24000 series, meeting heavy-load and high-impact requirements. Some models feature oil holes (W33) or tapered bores (K).
Key structural features include:
Double-row roller design for increased load distribution
Spherical outer raceway enabling self-alignment capability
Robust inner ring with two raceways
High-strength cage design (steel or brass)
Optional sealed or open configurations
Cylindrical or tapered bore options for flexible mounting
Self-Aligning Roller Bearings are engineered for heavy-duty and demanding industrial environments.
1. High Radial Load Capacity
Designed to withstand very high radial loads due to line contact between rollers and raceways.
2. Moderate Axial Load Capacity
Capable of supporting axial loads in both directions in addition to radial loads.
3. Automatic Misalignment Compensation
The spherical raceway allows angular misalignment without significantly increasing stress, making it ideal for applications with shaft deflection or mounting deviation.
4. Excellent Shock and Vibration Resistance
Suitable for heavy-impact and vibration-prone environments such as mining, construction, and material handling systems.
5. Long Service Life
Optimized internal geometry and heat treatment processes enhance fatigue resistance and operational durability.
6. Reliable Performance in Harsh Conditions
Performs well in high-load, low-speed, and contaminated environments when properly sealed and lubricated.
Sealed vs. Unsealed
The table below shows the basic parameters of common series of self-aligning roller bearings. Specific dimensions are in accordance with ISO 15 standard.
| Model series (code) | Structural characteristics | Inner diameter range (d mm) | Outer diameter range (D mm) | Width range (B mm) | Applicable Scenarios |
| 213.. | Lightweight | 20 – 150 | 52 – 320 | 15 – 65 | Low load, compact space |
| 222.. | medium | 25 – 180 | 52 – 320 | 18 – 86 | General heavy industry |
| 223.. | Heavy | 30 – 160 | 70 – 340 | 23 – 114 | Impact, heavy load |
| 230.. | Wide series | 100 – 300+ | 150 – 460+ | 35 – 118+ | Large diameter, heavy load |
| 231.. | Wide series | 100 – 300+ | 165 – 500+ | 52 – 150+ | Large diameter, heavy load |
| 240/241.. | Extra Heavy/Extra Wide | 100 – 300+ | 150 – 500+ | 60 – 200+ | Vibrating screen, high pressure |
CC: Optimized internal structure, reducing friction.
W33: The outer ring has oil grooves and three oil holes for easy lubrication.
K: Tapered bore, taper 1:12 (common); K30: Tapered bore, taper 1:30.
C3/C4: Internal radial clearance of the bearing (C3 is larger than the standard group, C4 is larger than C3).
Our double-row barrel roller design ensures superior radial load capacity while also supporting axial loads in both directions. This makes our bearings ideal for heavy-duty transmission systems and shock-load environments.
Thanks to the spherical outer raceway structure, our bearings can automatically adjust to shaft deflection and housing misalignment. This reduces internal stress, minimizes vibration, and prevents premature failure caused by installation deviation.
Optimized internal geometry
Precision heat treatment process
High-grade bearing steel
Strict dimensional tolerance control
These factors significantly improve fatigue resistance and operational durability, reducing downtime and replacement frequency.
Designed for harsh operating conditions, our bearings maintain stable performance under impact loads and continuous vibration, ensuring reliable operation in heavy machinery.
We offer:
Cylindrical or tapered bore
Open or sealed versions
Steel or brass cage options
Customized clearance and lubrication solutions
This flexibility allows us to match your exact application requirements.
By reducing maintenance intervals, minimizing unexpected shutdowns, and extending operational lifespan, our Self-Aligning Roller Bearings help customers achieve better long-term cost efficiency.
Our Self-Aligning Roller Bearings are widely used in industries where heavy loads and alignment challenges are unavoidable:
Crushers
Vibrating screens
Conveyors
Feeders
Rolling mills
Continuous casting machines
Heavy-duty gearboxes
Rotary kilns
Ball mills
Concrete mixers
Drying cylinders
Press sections
Large transmission rollers
Fans and blowers
Gear drive systems
Turbine auxiliary equipment
Bulk conveyors
Hoisting equipment
Industrial transmission shafts
By choosing our Self-Aligning Roller Bearings, you gain:
Higher equipment reliability
Reduced maintenance downtime
Improved operational safety
Strong performance in demanding environments
A stable, experienced manufacturing partner
We are committed to delivering consistent quality, precise engineering, and responsive technical support to ensure your equipment operates at peak performance.
If you require technical specifications, customized solutions, or bulk pricing, our team is ready to support your project requirements.
VKUKEN has over 30 years of experience in bearing design and manufacturing. We can customize non-standard bearings according to customer drawings, or we can measure and create drawings of existing bearings on-site and then manufacture custom bearings based on those drawings. Our team of professional engineers has over 20 years of experience in bearing design and measurement.
We have found that many people would like to learn about the application technology and selection of Bearing but do not have suitable materials to read. Our team of engineers constantly exports technology on our download page and blog, which you can download for free.
Hi, I am Maxwell, I am an engineer in the field of bearing applications. I majored in mechanical and electromechanical engineering during college. After graduation, I worked for the top three "SKF" bearing companies in the world for ten years , during which I went to dozens of customers in different industries to help them solve problems in bearing applications; later I joined VKUKEN Bearing Manufacturing, and I will share bearing technical knowledge on this website from time to time. If you are a customer Please contact me to help you solve your problem; if you are also a technical expert in bearings, I am very willing to exchange technical knowledge about bearings with you.
