HK121708
JRZC HK121708 needle roller bearing features a thin-walled outer ring design, achieving high load capacity within a minimal radial space, making it ideal for compact, weight-sensitive machinery.
Compared to standard roller bearings, it can withstand greater loads in the same mounting space, ensuring superior rigidity, stable performance, and a longer service life.
Made from high-purity bearing steel, this bearing undergoes precision heat treatment and strict dimensional control, resulting in low friction, high efficiency, and low operating temperature.
A variety of cage options and custom internal clearances are available to adapt to diverse operating conditions.
- Dimensions
Bore diameter 12 mm Outside diameter 17 mm Width 8 mm PerformanceBasic dynamic load rating 4.8 kN Basic static load rating 6.4 kN Grease Reference speed 15000 r/min Oil Limiting speed 19000 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 9 g Roller 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.
