NTN Koyo Timken NF309em NF310em NF311em Cylindrical Roller Bearing

Product Specifications

Application Suitability

Need Reliable Cylindrical Roller Bearings? The NF309em Series Delivers Consistency

Procuring the right cylindrical roller bearings can be a challenge—mismatched dimensions lead to installation delays, while low-quality materials cause premature wear and unexpected downtime. With countless brands and型号 in the market, finding a single source for both standard and hard-to-find bearings often means coordinating with multiple suppliers.

Engineered for Long-Lasting Radial Performance

The NTN Koyo Timken NF309em, NF310em, and NF311em cylindrical roller bearings address these pain points through precision manufacturing and versatile design. Built with high-grade bearing steel and a single-row configuration optimized for radial loads, they fit seamlessly into applications requiring reliable rotation under continuous stress. Our ISO 9001 certified production processes ensure consistent quality, while our extensive inventory covers both these models and thousands of others across major international brands.

Optimal Performance in Radial Load Applications

These bearings excel in environments with pure radial loads and moderate speeds, such as belt conveyors, electric motors, and machine tool spindles. The 0° contact angle design maximizes radial load capacity, making them ideal for machinery where axial forces are minimal. Their robust construction handles vibration and shock common in industrial settings, reducing the risk of early failure compared to lower-grade alternatives.

Key Engineering Features for Reliability

The bearing steel material provides a high surface hardness and excellent wear resistance, critical for maintaining dimensional stability over extended service life. The 10×19×5mm specification (for model 6800) follows international dimensional standards, ensuring interchangeability with components from major manufacturers. The single-row design simplifies installation while maintaining sufficient load-bearing capacity for most light to medium-duty applications. Each unit undergoes rigorous dimensional and hardness testing before shipment, verifying compliance with industry standards.

Why Quality Bearings Reduce Total Cost

Choosing the right cylindrical roller bearing directly impacts your equipment’s total cost of ownership. Inferior bearings with substandard materials or imprecise dimensions often fail early, leading to unplanned downtime, replacement parts, and labor costs. In contrast, these precision-engineered bearings minimize maintenance needs and extend service intervals. By adhering to ISO 281 fatigue life standards, they deliver predictable performance that helps avoid costly production interruptions and secondary equipment damage.

Quality You Can Rely On

Packaging & Shipping

• Standard industrial packaging suitable for safe transportation
• Available from现货 inventory for prompt shipment
• Flexible shipping options including express courier, air freight, and sea freight
• Low minimum order quantity supported, ideal for both small repairs and large-scale production

Get a Quote for Your Cylindrical Roller Bearing Needs

Whether you need the NF309em, NF310em, NF311em series or other cylindrical roller bearings, provide us with your required model, dimensions, and quantity. Our team will promptly confirm availability and pricing, helping you secure the parts you need without unnecessary delays.

Frequently Asked Questions