314391
Cylindrical Roller Bearings Double Row, With Cage feature a double-row cylindrical roller design that delivers higher radial load capacity and increased system rigidity within a compact installation space. The cage structure accurately guides and evenly spaces the rollers, reducing friction and roller slippage, and ensuring stable performance under high-speed and heavy-load conditions.
Building on these structural advantages, JRZC double row cylindrical roller bearings are manufactured from high-purity bearing steel and incorporate optimized roller profiles and raceway geometry to significantly enhance load capacity and fatigue life. Through precision heat treatment and strict dimensional tolerance control, the bearings achieve low vibration, low noise, and low operating temperature. In addition, we offer customizable cage materials, internal clearances, and accuracy classes, allowing flexible adaptation to different operating conditions and making them a reliable choice for electric motors, gearboxes, machine tool spindles, and heavy industrial equipment.
- Dimensions
Bore diameter 420 mm Outside diameter 620 mm Width 200 mm PerformanceBasic dynamic load rating 3470 kN Basic static load rating 7 800 kN Grease Reference speed 350 r/min Oil Limiting speed 550 r/min - Properties
Bore type Cylindrical For Load Direction Radial Number of rows double row Radial internal clearance C3 Tolerance class for dimensions Nomal Tolerance class for run-out P6 Seal type Without Lubricant None Relubrication feature Without - Weight and Material
Product net weight 215 kg Roller material Chrome steel Ring Material Chrome steel Cage BRASS
Double Row Cylindrical Roller Bearings with Cage offer clear advantages in applications requiring high radial load capacity and superior rigidity. The double-row design enables the bearing to withstand heavy loads while maintaining precise shaft guidance, improving overall system stability.
The cage ensures smooth roller motion, reducing friction, heat generation, and wear, which helps extend bearing service life and maintain consistent performance at higher speeds. With their low vibration, high accuracy, and excellent reliability, these bearings are especially suitable for electric motors, gearboxes, machine tools, and heavy-duty industrial machinery, where long-term operational stability and reduced maintenance are critical.
FAQ
Q1: What is a double row cylindrical roller bearing with cage?
A: It is a cylindrical roller bearing with two rows of rollers and a cage that separates and guides the rollers, providing high radial load capacity, excellent rigidity, and stable operation.
Q2: What are the main advantages of the double row design?
A: The double row structure significantly increases radial load capacity and stiffness, making it ideal for applications with heavy loads and requirements for precise shaft positioning.
Q3: What is the function of the cage in this bearing?
A: The cage ensures even roller spacing and smooth guidance, reducing friction, heat generation, and roller-to-roller contact, which improves bearing speed capability and service life.
Q4: Can this bearing support axial loads?
A: Double row cylindrical roller bearings are mainly designed for radial loads. Axial load capacity depends on the flange design and is usually limited; axial positioning is often handled by a separate locating bearing.
