NA 4848
Needle Roller Bearing utilizes slender, cylindrical rollers as rolling elements, delivering extremely high radial load capacity within a compact cross-sectional height.
Compared with standard roller bearings, our needle roller bearings can carry higher loads in the same installation space, providing excellent rigidity, stable operation,
and extended service life.
JRZC Needle Roller Bearings are made from high-purity bearing steel and undergo precision heat treatment and strict dimensional control, ensuring low friction, high efficiency, and
low operating temperature. In addition, we offer various cage materials, designs, and custom internal clearances, allowing flexible adaptation to different operating
conditions. These features make our needle roller bearings ideal for automotive components, gearboxes, construction machinery, power tools, and industrial drive
systems, delivering reliability and performance in demanding applications.
- Dimensions
Bore diameter 240 mm Outside diameter 300 mm Width 60 mm PerformanceBasic dynamic load rating 347 kN Basic static load rating 1 120 kN Grease Reference speed 750 r/min Oil Limiting speed 850 r/min - Properties
Bore type Cylindrical For Load Direction Radial Number of rows Single row Radial internal clearance CN 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 10 kg Roller material Chrome steel Ring Material Chrome steel Cage Sheet metal
Needle Roller Bearings offer significant benefits in applications where space is limited but high radial load capacity is required. The compact design allows for lighter and more efficient machinery without compromising performance. With high rigidity, low friction, and stable operation, these bearings reduce energy loss, minimize heat generation, and extend service life.
Their versatile designs and customizable options make them ideal for automotive transmissions, construction equipment, industrial gearboxes, power tools, and other high-performance machinery, providing reliable operation, reduced maintenance, and enhanced overall equipment efficiency.
FAQ
Q1: What is a needle roller bearing?
A: A needle roller bearing is a type of roller bearing that uses slender, cylindrical rollers as rolling elements, providing high radial load capacity in a compact design.
Q2: What are the main advantages of needle roller bearings?
A: They offer high load capacity, low friction, excellent rigidity, compact cross-section, and efficient operation, making them suitable for applications with limited space but heavy radial loads.
Q3: Can needle roller bearings handle axial loads?
A: Standard needle roller bearings are primarily designed for radial loads. Axial loads are usually minimal; special designs like thrust needle roller bearings are used if significant axial load is required.
Q4: What types of needle roller bearings are available?
A: Common types include with cage, full complement (no cage), drawn cup, and thrust needle roller bearings, each designed for specific load and installation conditions.
