NTN N2304em NJ2304em NF2304em NU NUP Cylindrical Roller Bearing

Product Specifications

Application Suitability

Need Reliable Cylindrical Roller Bearings? Avoid Common Sourcing Headaches

Searching for the right cylindrical roller bearing often means wading through confusing model variations or settling for limited brand options. Many buyers face costly delays when specifications don’t match, or deal with premature failures from substandard components that lack proper hardness and precision.

Your Single Source for NTN-Series Cylindrical Roller Bearings

We simplify your procurement with comprehensive coverage of N2304em, NJ2304em, NF2304em, NU, and NUP cylindrical roller bearing models. Our ISO 9001-certified supply chain ensures consistent quality, while our extensive inventory means you get the exact bearing you need without multiple vendor negotiations. Whether for industrial gearboxes or automotive transmissions, we handle the complexity so you can focus on operations.

Engineered for Radial Load Performance

Cylindrical roller bearings excel in applications with high radial loads and moderate speeds—ideal for conveyor rollers, pump shafts, and gearbox assemblies. The N2304em series, for example, features optimized cage designs that reduce friction under continuous operation, while NJ and NU configurations accommodate different axial load requirements. Choosing the correct design (solid cage vs. split cage, separable vs. non-separable) directly impacts service life in your specific operating conditions.

Key Engineering Features That Impact Reliability

Material selection is critical: our bearings use high-grade alloy steel with controlled hardness (typically 58-62 HRC) to resist wear and deformation under load. Precision class (ISO P0 to P6) ensures dimensional accuracy for seamless interchangeability with original equipment. The NU design’s separable inner ring simplifies mounting and dismounting during maintenance, while the NJ series includes a flange to handle light axial loads. Surface finish (Ra ≤ 0.8μm) minimizes friction and heat generation, extending bearing life in temperature-controlled environments.

Why Bearing Quality Affects Your Bottom Line

Choosing uncertified cylindrical roller bearings may save upfront costs, but frequent replacements and unplanned downtime quickly erase those savings. A bearing failing prematurely in a critical application like a steel mill conveyor can halt production for hours, costing far more than investing in quality components. Our bearings follow ISO 281 fatigue life standards, ensuring predictable performance that reduces total cost of ownership over time.

Quality You Can Rely On

Packaging & Shipping

• Neutral industrial packaging with anti-corrosion protection
• Ready stock availability for prompt dispatch
• Flexible shipping options including express courier, air freight, and sea freight
• Low minimum order quantity to support both small repairs and large production runs

Get Your Cylindrical Roller Bearing Quote Today

Tell us your required model (N2304em, NJ2304em, etc.), quantity, and delivery location, and we’ll provide a competitive quote with lead time. We handle all major brands and can cross-reference part numbers to ensure you get the right bearing for your application.

Frequently Asked Questions