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440 Stainless Steel Deep Groove Ball Bearings R Series
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440 Stainless Steel Deep Groove Ball Bearings R Series

Material 440 Stainless Steel
Bearing Type Deep Groove Ball Bearing
Inner Diameter (ID) 5mm - 28.575mm (depending on model)
Outer Diameter (OD) 9.525mm - 53.975mm (depending on model)
Width (W) 3mm - 9.525mm (depending on model)
Load Rating High radial and axial load capacity
Friction Coefficient Low friction for smooth rotation
Temperature Range -20°C to +120°C
Lubrication Type Pre-lubricated or greased (depending on model)
Seals Open, shielded, or sealed options

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440 Stainless Steel Deep Groove Ball Bearings R Series are high-performance, corrosion-resistant bearings designed to meet the demanding requirements of various industrial and mechanical applications. These bearings feature a deep groove design that allows them to support both radial and axial loads in one direction. Made from 440 stainless steel, they are ideal for environments where durability and resistance to corrosion are critical, such as in food processing, automotive, and marine industries.

 

 

 

 

 

 

 

Bearing
NO.		 Bore
d
mm		 0.D
D
mm		 Width
B
mm		 Chamfer
r min
mm		 Ball Complement Load Rating(KN)
NO. Size
mm		 Dynamic
Cr		 Static
  Cor
SR168 6.350 9.525 3.175 0.1 0.268  0.136
SR188 6.350 12.700 3.175 0.15 8 1.588 0.830  0.370
SR4 6.350 15.875 4.978 0.3 8 2.381 1.136  0.558
SR4A 6.350 19.050 7.14 0.4 6 3.969 2.175  1.163
SR6 9.525 22.225 5.556 0.4 7 3.969 2.560  1.350
SR8R 12.700 28.575 6.350 0.4 8 4.762 3.930  2.230
SR8-7 11.113 28.575 6.350 0.4 8 4.762 3.912  2.245
SR10 15.875 34.925 7.142 0.6 10 4.762 4.620  2.790
SR12 19.050 41.275 7.938 0.6 9 6.350 7.240  4.463
S99502H 15.875 34.925 7.938 0.8 8 5.593 4.605  2.774
SR14 22.225 47.625 9.525 0.6 10 6.350 7.740  4.960
SR16 25.400 50.800 9.525 0.6 10 6.747 7.740  5.160
SR18 28.575 53.975 9.525 0.6 9 7.938 10.180  6.910
SR3 4.763 12.7 3.967 0.3 8 2.0 1.301  0.488
SR133 2.380 4.763 3.175 0.3 8 1.588 1.89   0.6
SR166 4.763 9.525 3.0 0.3 8 2.0 0.709  0.272
SMR126 6 12 3.0 0.2 7 2.0 0.715  0.292
SMR106 6 10 3.0 0.2 7 2.0 0.496  0.218
SMR117 7 11 3.5 0.2 7 2.0 0.455  0.202
SMR128 8 12 4.0 0.2 8 2.381 0.543  0.274
SMR148 8 14 4.0 0.2 8 2.381 0.817  0.386
SMR115 5 11 4.0 0.3 8 2.381 0.716  0.282
SMR105 5 10 0.3 8 2.381 0.431  0.169

Key Features of 440 Stainless Steel Deep Groove Ball Bearings R Series

  1. Corrosion Resistance
    • 440 Stainless Steel offers excellent resistance to rust, corrosion, and oxidation, making these bearings highly suitable for use in wet, humid, or chemically aggressive environments.
  2. High-Load Capacity
    • The deep groove design allows the bearing to handle both radial and axial loads, providing flexibility and adaptability in a wide range of applications.
  3. Low Friction and Smooth Operation
    • These bearings are designed for low friction and smooth rotation, minimizing energy loss and wear, which contributes to longer operational lifespans and greater energy efficiency.
  4. Versatile Applications
    • Ideal for both high-speed and high-load applications, the R series is well-suited for use in automation, machinery, robotics, and other mechanical systems.
  5. Temperature Resistance
    • The R Series is designed to work effectively in both low and high-temperature environments, maintaining reliable performance across a broad range of temperatures.
  6. Low Maintenance
    • With robust construction and reduced friction, these bearings require minimal maintenance and offer long-lasting performance.

Applications of 440 Stainless Steel Deep Groove Ball Bearings R Series

  1. Automotive Industry
    • Perfect for use in automotive components, including engines, transmissions, and bearings in vehicle systems that require corrosion resistance and high load capacity.
  2. Food Processing
    • Ideal for food machinery, where hygiene and corrosion resistance are paramount, these bearings help ensure smooth, reliable performance without contamination risks.
  3. Marine Applications
    • The R series bearings are highly resistant to saltwater, making them suitable for marine applications, such as boat engines, pumps, and other equipment exposed to harsh conditions.
  4. Industrial Machinery
    • These bearings are often used in heavy-duty industrial machines, such as conveyors, packaging equipment, and textile machines, where high load-bearing capacity and smooth motion are required.
  5. Precision Instruments
    • With their smooth and precise motion, these bearings are ideal for high-speed applications, such as in robotics, CNC machinery, and other precision instruments.
  6. Electronics and Robotics
    • Used in robotics and electronics manufacturing equipment, the bearings provide precise and reliable motion for various automated systems.

Advantages of 440 Stainless Steel Deep Groove Ball Bearings R Series

  • Corrosion Resistance: Excellent for use in damp, humid, or chemically aggressive environments.
  • Versatile Load Capacity: Capable of handling both radial and axial loads, suitable for diverse applications.
  • High Precision: Designed for smooth, precise motion, ideal for high-speed applications.
  • Low Maintenance: Minimal friction and wear for longer-lasting performance with less need for maintenance.
  • Temperature Resistance: Can operate in both high and low-temperature environments, ensuring reliability in extreme conditions.

1. Premium Quality Materials

We use top-grade ceramic materials like Zirconia (ZrO2) and Silicon Nitride (Si3N4) to ensure our bearings offer superior durability, wear resistance, and performance.

2. Tailored Solutions

Our team works closely with you to provide customized bearing solutions that perfectly meet the needs of your industry, whether in packaging, renewable energy, or other specialized fields.

3. Industry Expertise

With years of experience serving diverse industries, we understand the unique challenges of high-performance applications and consistently deliver reliable solutions.

4. Precision Engineering

Our ceramic bearings are manufactured with state-of-the-art technology to achieve unmatched precision and efficiency, ensuring smooth operation and extended lifespan.

5. Competitive Pricing

We combine high quality with cost-effective pricing, offering excellent value to our clients without compromising on performance.

6. Fast Delivery & Global Reach

Our streamlined logistics and global network ensure timely delivery, no matter where you are.

7. Exceptional Support

Our dedicated team is available to assist you every step of the way—from initial inquiry to after-sales service—ensuring a hassle-free experience.

1. What are ceramic bearings?

Ceramic bearings are bearings made from advanced ceramic materials such as Zirconia (ZrO2) or Silicon Nitride (Si3N4). They are known for their high strength, wear resistance, and ability to perform in extreme conditions.

2. What are the advantages of ceramic bearings over steel bearings?

Ceramic bearings offer several advantages, including:

  • Higher Durability: Resistant to wear, corrosion, and high temperatures.
  • Lighter Weight: Up to 40% lighter than steel bearings.
  • Non-Magnetic & Electrically Insulating: Ideal for sensitive applications.
  • Low Friction: Reduces energy loss and heat generation.

3. In which industries are ceramic bearings commonly used?

Ceramic bearings are widely used in:

  • Packaging equipment
  • Renewable energy (e.g., wind turbines)
  • Aerospace and automotive
  • Medical devices
  • Chemical processing
  • High-precision tools

4. Can ceramic bearings handle high temperatures?

Yes, ceramic bearings are highly resistant to heat and can operate in temperatures exceeding 1,000°C, depending on the material used.

5. Are ceramic bearings suitable for corrosive environments?

Absolutely! Ceramic bearings are non-reactive to most chemicals, making them ideal for use in highly corrosive environments.

6. What is the lifespan of ceramic bearings?

Ceramic bearings typically last much longer than steel bearings due to their wear resistance and durability. However, the exact lifespan depends on the operating conditions and maintenance practices.

7. How do I maintain ceramic bearings?

Ceramic bearings require minimal maintenance, but to ensure longevity:

  • Use the correct lubrication when necessary.
  • Keep them clean and free from contaminants.
  • Follow proper installation procedures.

8. Do you provide customized ceramic bearings?

Yes, we offer tailored ceramic bearing solutions to meet your specific application requirements. Contact us to discuss your needs.

9. What sizes and types of ceramic bearings do you offer?

We supply a wide range of sizes and configurations, including ball bearings, roller bearings, and hybrid bearings. Check our product catalog or contact us for more details.

10. How can I place an order or request a quote?

Simply visit our Contact Us page, fill out the inquiry form, or reach out to us directly via email or phone. Our team will respond promptly with the information you need.

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