Double Row Self Aligning Roller Bearing Low Friction 23130 Bearing For Heavy Machinery
23130 Self-Aligning Roller Bearing for Heavy Machinery & Energy Sectors
In the dynamic landscape of mechanical engineering, the 23130 self-aligning roller bearing emerges as a pivotal component, engineered to excel in demanding operational conditions. Its design philosophy revolves around catering to high-load scenarios and compensating for shaft misalignments, making it an essential element across a broad spectrum of heavy-duty machinery.
Design and Structure
Inner Ring and Outer Ring
The inner ring of the 23130 bearing features a double-row raceway configuration, meticulously machined to match the 150mm shaft diameter with utmost precision. This tight fit ensures seamless force transmission post-installation, minimizing any potential for slippage and optimizing mechanical efficiency.
The outer ring is characterized by its spherical raceway, a defining structural element that endows the bearing with its self-aligning prowess. This unique design allows the bearing to effectively accommodate installation discrepancies between the shaft and the bearing housing, typically within an angular range of 1° - 2.5°.
Rolling Elements and Cage
At the heart of the 23130 bearing are its double-row barrel-shaped rollers. These rollers are designed with a curved profile that synergistically interacts with the outer ring's spherical raceway, enabling the bearing to adeptly handle both radial and bidirectional axial loads.
The cage, typically crafted from brass, plays a crucial role in maintaining the orderly arrangement of the rollers. Through a segmented design, the cage ensures that the rollers are evenly spaced, providing each with ample room for free rotation.
Sealing Structure (Optional)
Certain variants of the 23130 bearing come equipped with either contact or non-contact seals. The contact seal, fashioned from nitrile rubber, forms a tight seal with the inner ring, effectively repelling dust and moisture.
Key Parameters
| Parameter |
Value |
| Inner Diameter (d) |
150mm |
| Outer Diameter (D) |
250mm |
| Width (B) |
80mm |
Performance Advantages
Exceptional Load-Carrying Capacity
The 23130 bearing's double-row roller design, combined with an optimized contact angle, endows it with an impressive basic dynamic load rating of 725kN and a static load rating of 1180kN.
Superior Self-Aligning Capability
The seamless interaction between the outer ring's spherical raceway and the barrel-shaped rollers equips the 23130 bearing with an outstanding self-aligning ability, resulting in a service life extension of over 30%.
Robust Wear Resistance and Temperature Stability
Constructed from high-carbon chromium bearing steel (SUJ2), the bearing rings and rollers are heat-treated to achieve a hardness of HRC60 - 65. The bearing exhibits excellent dimensional stability within the temperature range of -40°C to 120°C.
Low Friction and Vibration Damping
The precision-machined raceways and rollers contribute to a remarkably low friction coefficient, as low as 0.0015, while the double-row symmetrical design ensures uniform load distribution.
Material Quality
Material of Rings and Rollers
The core material is high-purity bearing steel (GCr15SiMn), processed using vacuum degassing technique to eliminate internal pores and inclusions, resulting in exceptional density and mechanical properties.
Cage Material
- Brass Cage (H62): Excellent thermal conductivity and mechanical strength, suitable for medium to high-speed applications with heavy loads up to 150°C.
- Steel Cage (No. 10 Steel): Surface carburizing treatment provides hardness of HRC55 - 60, ideal for severe vibration and shock loads.
- Nylon Cage (PA66+GF30): Low weight and friction coefficient with good corrosion resistance, operating temperature below 120°C.
Application Fields
Heavy Industrial Machinery
Deployed in eccentric shafts of jaw crushers and work rolls in rolling mills, enduring massive crushing forces, high temperatures, and intense rolling pressures.
Construction Machinery
Used in output shafts of gearboxes and slewing bearing components in loaders and excavators, ensuring stable power transmission on uneven terrain.
Energy Equipment
Beneficial in wind turbine main shaft systems and water turbine main shafts, compensating for shaft deflection while bearing radial and axial loads.
Papermaking and Textile Machinery
Employed in calender rolls and drying roll groups for uniform paper processing, and in dyeing equipment for operation in humid, hot environments.
Installation and Maintenance
During installation, use specialized tools such as hydraulic nuts to ensure uniform force on the inner ring. For tapered inner ring models, adjust clearance using a lock nut with recommended working clearance between 0.12 - 0.25mm.
For lubrication, use extreme pressure lithium-based grease (NLGI Grade 2) with filling amount typically 1/3 to 1/2 of bearing space. For high-speed applications, ISO VG 46 or 68 lubricating oil is recommended.
Regular maintenance includes monitoring bearing temperature (below 70°C) and checking for abnormal vibration and noise. Use pullers during disassembly to avoid damage to surrounding components.
Conclusion
The 23130 self-aligning roller bearing represents a pinnacle of engineering design, offering high-strength construction, exceptional self-aligning capabilities, and broad adaptability to diverse operating conditions. Its pivotal role in enabling efficient operation of industrial machinery underscores its importance as an indispensable component in modern mechanical engineering.
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