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NA4860 Needle Roller Bearing 300x380x80mm

NA4860 Needle Roller Bearing 300x380x80mm


Specifications
Inner Diameter (ID)
300
Outer Diameter (OD)
380
Width (W)
80
Overall Size (IDxODxW)
300x380x80
Dynamic Load Rating
594.0 kN
Static Load Rating
1 800.0 kN
Reference Speed
1 100 rpm
Limiting Speed
1 300 rpm
Cage Material
Non-Metallic
Seal Type
None On Both Sides
Clearance
CN
Precision
Grade 0
Operating Temperature
-40 °C to +120 °C
Mass
21.8 kg
Details

Needle roller bearings are a type of precision roller bearing characterized by long, thin cylindrical rollers resembling needles. Their distinctive design allows for a higher length-to-diameter ratio, enabling these bearings to handle high radial loads in compact spaces. Commonly used in automotive transmissions, industrial gearboxes, and various machinery requiring efficient radial load support, needle roller bearings offer advantages of lightweight construction, cost-effectiveness, and suitability for high-speed applications. The needle rollers, guided by the bearing's races, distribute loads evenly, providing excellent radial load-carrying capacity. Proper lubrication is essential for minimizing friction, ensuring durability, and extending service life. Needle roller bearings find application in diverse industries where space constraints and the need for efficient radial load handling are critical considerations. 


SPECIFICATIONS
 
 
Inner Diameter 300 mm Number of Rows Single Row
Outer Diameter 380 mm Cage Material Non-Metallic
Width 80 mm Seal Type None On Both Sides
Dynamic Load Rating 594.0 kN Clearance CN
Static Load Rating 1 800.0 kN Precision Grade 0
Fatigue Load Limit 173.0 kN Min Temperature -40 °C
Reference Speed 1 100 rpm Max Temperature +120 °C
Limiting Speed 1 300 rpm Size Standard Metric System
Rolling Element Roller Mass 21.8 kg


FEATURES AND BENEFITS


  • High load-carrying capacity.

  • Low friction and high-speed.

  • Support both radial and axial loads.

  • Well suited for applications with limited radial space.

 

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