Wear Resistant Industrial Ball Bearings 15x42x13 6302-2RS Bearing With Rubber Seals
6302-2RS Deep Groove Ball Bearing with Rubber Seals for Motors & Appliances. The 6302-2RS bearing is a significant component in the mechanical field, specifically a deep-groove ball bearing with double-sided rubber seals (2RS). This design feature makes it highly adaptable to various operating conditions, especially where protection against contaminants is crucial.
Design and Structure
Inner Ring and Outer Ring
The inner ring is precisely crafted to fit a 15mm shaft with a smooth inner bore ensuring secure connection and stable rotation. The outer ring (42mm outer diameter) endures external forces. Both rings feature deep, accurately-machined raceways that guide ball movement and distribute loads effectively.
Rolling Elements and Cage
High-precision steel balls manufactured from top-tier bearing steel provide excellent wear resistance and durability. The sheet metal cage maintains proper ball spacing, prevents collisions, guides ball movement, and aids in lubricant distribution.
Sealing Structure
Double-sided rubber seals (2RS) provide reliable protection against dust, dirt, and moisture. These tight-fitting seals are essential for challenging operating environments where contamination prevention is critical.
Key Parameters
| Parameter |
Value |
| Inner Diameter (d) |
15mm |
| Outer Diameter (D) |
42mm |
| Width (B) |
13mm |
| Basic Dynamic Load Rating (Cr) |
12.8 - 13.5kN |
| Basic Static Load Rating (Cor) |
6.5 - 6.8kN |
| Limiting Speed (Grease Lubrication) |
15000 - 17000rpm |
| Limiting Speed (Oil Lubrication) |
18000 - 20000rpm |
| Weight |
0.079 - 0.082kg |
Performance Advantages
High Radial Load-Carrying Capacity
Deep-groove design and high-quality steel balls enable even distribution of radial forces, making it suitable for heavy-duty machinery and conveyor systems.
Axial Load Accommodation
Capable of handling axial loads in both directions, making it versatile for applications with combined radial and axial forces in electric motors and gearboxes.
Low Friction and High-Speed Capability
Smooth-rolling steel balls and well-designed cage minimize friction, enabling operation at 15,000-20,000 rpm depending on lubrication method.
Quiet Operation
Precision-engineered components and rubber seals minimize vibrations and noise, ideal for household appliances, medical equipment, and office machinery.
Material Quality
Material of Rings and Balls
High-grade bearing steel (typically high-carbon chromium steel) provides excellent strength, hardness, and wear resistance. Manufacturing processes include vacuum degassing and precise heat treatment for optimal performance.
Cage Material
Sheet metal cages offer strength, cost-effectiveness, and good thermal conductivity. Non-metallic alternatives (nylon/polymers) may be used for corrosion resistance and reduced weight in specific applications.
Application Fields
Industrial Machinery
Used in conveyor system rollers and machine tool spindle assemblies where high radial load capacity and contamination protection are essential.
Electric Motors
Popular choice for medium-power motors, handling radial forces and accommodating axial movement while contributing to energy efficiency.
Automotive Industry
Applications include water pumps (resisting heat, moisture, vibration) and transmission components (differentials, gear shafts) for reliable power transfer.
Household Appliances
Widely used in washing machines, fans, and other appliances where quiet operation, reliability, and energy efficiency are paramount.
Installation and Maintenance
Installation
Use appropriate tools (hydraulic press, bearing installation sleeve) for even installation. Ensure proper alignment with shaft and housing to prevent uneven loading. For tapered shafts, use locking nuts or tapered sleeves to secure bearing and adjust pre-load.
Maintenance
- Lubrication: Lithium-based grease recommended (fill 1/3 to 1/2 of bearing space). Oil lubrication (ISO VG 32 or 46) for high-speed/high-temperature applications
- Temperature Monitoring: Maintain normal operating range (typically 60-80°C)
- Vibration/Noise Inspection: Regularly check for abnormalities indicating wear or damage
- Lubricant Condition: Replace contaminated or degraded lubricant promptly
Conclusion
The 6302-2RS bearing is a highly reliable and versatile component with double-sided rubber seals, excellent performance capabilities, and wide applicability across industrial, automotive, and household sectors. Proper understanding of its design, performance, and maintenance requirements ensures optimal efficiency and reliability in mechanical applications.
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