SKF RNU 204 ECP Cylindrical Roller Bearing | High Radial Load, Open Type (20x47x14mm)

The SKF RNU 204 ECP is a high-performance single-row cylindrical roller bearing engineered for demanding industrial applications requiring maximum radial load capacity. The RNU designation signifies a complete bearing assembly without an inner ring, allowing the rollers to run directly on a hardened shaft journal. This design maximizes roller set capacity and is ideal for applications where the shaft can be used as the inner raceway. Featuring the 'EC' enhanced internal geometry, this bearing provides optimized roller end/flange contact, leading to reduced friction and improved lubrication effectiveness, even under high stress. The bearing utilizes a strong, lightweight glass fiber reinforced Polyamide 66 cage ('CP') which is highly resistant to shock and aids in minimizing inertial forces, promoting cooler running temperatures and extended lubricant life. Designed for ease of installation and maintenance, the RNU 204 ECP is separable, meaning the roller and cage assembly (with the outer ring) can be mounted independently of the shaft. This bearing is a premier choice for applications such as heavy-duty industrial gearboxes, electric motors, centrifugal pumps, and large industrial fans where uptime and reliability are critical. As an SKF product, the RNU 204 ECP guarantees precision tolerance and manufacturing consistency, ensuring superior operational life and reduced vibration compared to standard cylindrical roller bearings.

Key Features

• Maximum radial load capacity due to optimized roller geometry (E design).
• RNU design allows for larger rollers and uses the shaft journal as the inner raceway, simplifying mounting.
• Separable components (outer ring and roller/cage assembly) for easier mounting and inspection.
• Equipped with the robust, low-friction Polyamide cage (CP) suitable for high-speed operation.
• Ideal for applications requiring high rigidity, such as gear drives and power transmission systems.
• Reduced friction and heat generation due to optimized roller end and flange contact area.

Technical Specifications