Needle roller bearings

**KOYO Needle Roller Bearings: Precision, Durability, and High Load Capacity for Demanding Applications**

In the world of industrial machinery, automotive systems, and precision equipment, KOYO needle roller bearings stand out as a critical solution for applications requiring compact design, high load capacity, and exceptional durability. Engineered with precision and reliability in mind, these bearings are designed to operate efficiently in constrained spaces while handling significant radial loads—making them indispensable in industries where performance and space optimization are paramount.

### **Technical Features & Design Excellence**
KOYO needle roller bearings utilize slender cylindrical rollers with a high length-to-diameter ratio, enabling them to support substantial radial loads despite their minimal cross-sectional height. This unique design allows for reduced friction, improved heat dissipation, and extended service life—even in high-speed or heavy-load environments. Key features include:

– **Compact & Lightweight Construction**: Ideal for applications with limited radial space, such as transmissions, gearboxes, and small electric motors.
– **High Load Capacity**: Engineered to withstand intense radial stresses, making them suitable for heavy machinery and automotive drivetrains.
– **Precision-Ground Rollers & Raceways**: Minimize vibration and noise while ensuring smooth rotation under demanding conditions.
– **Versatile Cage Designs**: Options include steel, polymer, or machined brass cages to optimize performance in various lubrication and temperature conditions.
– **Sealed & Open Variants**: Shielded or sealed versions protect against contamination in harsh environments, while open designs allow for high-speed performance with optimal lubrication.

### **Performance Advantages**
KOYO needle roller bearings deliver superior performance in critical applications, thanks to their robust engineering and material quality. Their low-profile design reduces weight without sacrificing strength, while advanced heat treatment processes enhance wear resistance. These bearings excel in:

– **Reduced Friction & Energy Loss**: Optimized roller profiles and surface finishes minimize power consumption, improving efficiency in automotive and industrial systems.
– **Extended Service Life**: High-grade steel and precision manufacturing reduce fatigue, ensuring reliability in continuous operation.
– **High-Speed Capability**: Balanced roller alignment and advanced cage designs prevent skidding and maintain stability at elevated RPMs.

### **Typical Applications**
KOYO needle roller bearings are widely used across industries where space constraints and high-load performance are critical. Common applications include:

– **Automotive Systems**: Transmissions, differential assemblies, steering columns, and clutch release mechanisms.
– **Industrial Machinery**: Printing presses, textile equipment, conveyor systems, and agricultural machinery.
– **Precision Equipment**: Robotics, medical devices, and aerospace actuators requiring compact, high-precision bearing solutions.

Whether in high-speed automotive drivetrains or heavy-duty industrial gearboxes, KOYO needle roller bearings provide the durability, efficiency, and compactness needed to keep machinery running smoothly. By combining advanced engineering with rigorous quality standards, KOYO ensures these bearings meet the toughest operational demands—delivering reliability where it matters most.

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Bearing No. Classification[1] Classification[2]
WJ-809624
Needle roller bearings
Radial needle roller and cage assemblies
WJ-404620
Needle roller bearings
Radial needle roller and cage assemblies
WJ-404624
Needle roller bearings
Radial needle roller and cage assemblies
WJ-445016
Needle roller bearings
Radial needle roller and cage assemblies
WJ-485416
Needle roller bearings
Radial needle roller and cage assemblies
WJ-485424
Needle roller bearings
Radial needle roller and cage assemblies
WJ-525816
Needle roller bearings
Radial needle roller and cage assemblies
WJ-525824
Needle roller bearings
Radial needle roller and cage assemblies
WJ-566216
Needle roller bearings
Radial needle roller and cage assemblies
WJ-566416
Needle roller bearings
Radial needle roller and cage assemblies
WJ-566424
Needle roller bearings
Radial needle roller and cage assemblies
WJ-647216
Needle roller bearings
Radial needle roller and cage assemblies
WJ-647224
Needle roller bearings
Radial needle roller and cage assemblies
WJ-243016
Needle roller bearings
Radial needle roller and cage assemblies
WJ-364216
Needle roller bearings
Radial needle roller and cage assemblies
WJ-243020
Needle roller bearings
Radial needle roller and cage assemblies
WJ-364220
Needle roller bearings
Radial needle roller and cage assemblies
WJ-243024
Needle roller bearings
Radial needle roller and cage assemblies
WJ-384424
Needle roller bearings
Radial needle roller and cage assemblies
WJ-243028
Needle roller bearings
Radial needle roller and cage assemblies