NTN Koyo Timken N303em-N305em Cylindrical Roller Bearing

Product Specifications

Application Suitability

Need Reliable Cylindrical Roller Bearings? Here’s What You Should Check

Finding the right cylindrical roller bearing for your equipment can be challenging. Many buyers struggle with mismatched dimensions causing installation delays, or low-quality bearings failing prematurely under heavy loads. Sourcing from multiple suppliers to compare brands and lead times only adds complexity to your procurement process.

Engineered for Consistent Performance in Demanding Environments

Our NTN Koyo Timken N303em-N305em cylindrical roller bearings address these challenges with ISO 9001-certified manufacturing processes and strict quality control. As a full-range bearing supplier, we offer both our BDL brand and access to international models, ensuring you get the right specification without switching vendors. The double-row design and 60° contact angle provide reliable radial load support, ideal for applications like hydraulic system pivots and conveyor drives.

Optimal Performance in High-Load, Misalignment-Prone Applications

This cylindrical roller bearing excels in industrial environments where moderate misalignment occurs. The aligning capability accommodates minor shaft deflection, while the unseparated construction maintains structural integrity under dynamic loads up to the bearing’s rated capacity. Whether operating in dusty factory settings or temperature-varying conditions, the bearing steel material ensures durability and resistance to wear.

Key Engineering Features for Long Service Life

The precision rating options (P0 to P2) allow selection based on application accuracy requirements—P5 or P4 grades for high-speed machinery, P0 for general industrial use. Clearance grades C0 (standard), C3, and C4 provide flexibility for thermal expansion considerations; C3 is recommended for applications with temperature fluctuations. The choice between steel or brass cages offers trade-offs in weight and heat resistance, with brass cages better suited for higher operating temperatures.

Why Proper Bearing Selection Reduces Total Costs

Choosing the correct cylindrical roller bearing directly impacts your equipment’s reliability and maintenance expenses. Bearings with inadequate precision or material quality often lead to increased vibration, noise, and early failure, resulting in unplanned downtime and replacement costs. Our bearings undergo rigorous dimension and hardness testing, ensuring they meet specified tolerances and resist premature wear. By selecting the right clearance and cage material upfront, you minimize long-term operational costs.

Quality Assurance You Can Trust

Packaging & Shipping

• Standard packaging: Carton boxes with palletization for bulk orders
• Lead time: 10-15 days from order confirmation
• Shipping options: Express courier, air freight, or sea freight based on urgency and destination
• Minimum order quantity: Flexible, supporting both small trial orders and large-scale purchases

Get Your Cylindrical Roller Bearing Quote Today

Whether you need the N303em-N305em series or other cylindrical roller bearings, provide your required model, dimensions, and quantity, and we’ll deliver a competitive quote with lead time. Our team can also assist with cross-referencing international brand equivalents to ensure compatibility with your existing equipment.

Frequently Asked Questions