Koyo 6800 Zz 2RS Deep Groove Ball Bearings Japan

Product Specifications

Application Suitability

Finding the Right Cylindrical Roller Bearing Nu311? Key Considerations for Reliable Performance

When sourcing bearings for critical machinery, procurement teams often face challenges with mismatched dimensions, unclear material quality, and limited brand options. A radial bearing that fails prematurely due to insufficient load capacity or poor precision can lead to unexpected downtime and costly repairs. Many suppliers only offer a narrow range of brands, forcing buyers to manage multiple vendor relationships to meet diverse operational needs.

Engineered for Radial Load Performance in Demanding Applications

This single row cylindrical roller bearing addresses these challenges with its separated design, allowing easy installation and maintenance in tight spaces. Manufactured from high-grade bearing steel, it delivers reliable performance across industrial machinery, steel metallurgy, and automation equipment—sectors where radial load handling and dimensional accuracy are non-negotiable. As a supplier with access to both international brands like NSK and domestic alternatives, we provide flexibility to source bearings that match your exact specifications, whether you need a direct replacement or a cost-effective alternative.

Optimal Performance in High-Radial-Load Environments

Designed specifically for radial load applications, this cylindrical roller bearing operates efficiently in conditions where axial loads are minimal. With an outer dimension range of 35mm-400mm and precision ratings from P0 to P2, it accommodates various industrial requirements—from general machinery to high-precision equipment. The open seal design allows for flexible lubrication options (oil, grease, or dry operation), making it adaptable to environments where maintenance intervals or lubrication access may be limited.

Critical Engineering Features for Longevity

The separated structure of this bearing simplifies mounting and dismounting, reducing downtime during maintenance—a critical advantage in production-critical systems. Its cylindrical roller design distributes radial loads evenly across the raceways, minimizing stress concentrations and extending service life. The use of bearing steel ensures high surface hardness and wear resistance, while precision grades P0 to P2 cater to applications requiring tight dimensional tolerances, such as machine tool spindles or precision conveyors. These features collectively ensure consistent performance even under varying load conditions and operating temperatures.

Total Cost of Ownership: Why Quality Bearings Matter

Choosing a low-quality cylindrical roller bearing may initially reduce procurement costs, but the long-term expenses of premature failure—including equipment downtime, replacement parts, and labor—often far exceed the savings. This bearing’s adherence to international standards and material quality controls helps prevent common issues like early wear, vibration, and noise, which can damage adjacent components and disrupt production schedules. By selecting a bearing with the correct precision rating and load capacity, you ensure optimal performance and minimize the total cost of ownership over the equipment’s lifecycle.

Quality Assurance You Can Trust

Packaging & Shipping

• Standard packaging includes cartons with palletization for bulk orders
• Ready stock items available for immediate dispatch
• Flexible shipping options: express courier, air freight, or sea freight based on urgency and volume
• Low minimum order quantity supported, ideal for both small-scale maintenance and large production runs

Get a Quote for Your Cylindrical Roller Bearing Needs

Whether you require the Nu311 model or another cylindrical roller bearing specification, we can provide competitive pricing and availability. Share your bearing model, dimensions (d x D x B), and quantity requirements, and our team will respond promptly with a tailored quote. With access to a comprehensive range of brands and models, we simplify your procurement process by serving as a single source for all your bearing needs.

Frequently Asked Questions