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NK 38/20 Needle Roller Bearing 38x48x20mm

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Needle Roller Bearings have long, thin cylindrical rollers resembling needles. They excel at handling high radial loads in tight spaces, making them ideal for automotive transmissions, gearboxes, and machinery. Lightweight, cost-effective, and suitable for high speeds, they distribute loads evenly and require proper lubrication for durability. Single-row variants without an inner ring work well in compact setups with hardened shaft raceways. The outer ring includes two non-separable closure rings that act as flanges to guide the bearing axially.


SPECIFICATIONS
 
 
Inner Diameter 38 mm Number of Rows Single Row
Outer Diameter 48 mm Cage Material Sheet Steel
Width 20 mm Seal Type None On Both Sides
Dynamic Load Rating 25.5 kN Clearance CN
Static Load Rating 49 kN Precision Grade 0
Fatigue Load Limit 6.1 kN Min Temperature -30 °C
Reference Speed 11 000 rpm Max Temperature +120 °C
Limiting Speed 12 000 rpm Size Standard Metric System
Rolling Element Roller Mass 0.079 kg


FEATURES AND BENEFITS


  • High load-carrying capacity.

  • Low cross-sectional height.

  • Support both radial and axial loads.

  • Well suited for applications with limited radial space.

 

Specifications

Inner Diameter (ID): 38

Outer Diameter (OD): 48

Width (W): 20

Overall Size (IDxODxW): 38x48x20

Dynamic Load Rating: 25.5 kN

Static Load Rating: 49 kN

Reference Speed: 11 000 rpm

Limiting Speed: 12 000 rpm

Cage Material: Sheet Steel

Seal Type: None On Both Sides

Clearance: CN

Precision: Grade 0

Operating Temperature: -30 °C to +120 °C

Mass: 0.079 kg

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