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NK 28/20 Needle Roller Bearing 28x37x20mm

NK 28/20 Needle Roller Bearing 28x37x20mm


Specifications
Inner Diameter (ID)
28
Outer Diameter (OD)
37
Width (W)
20
Overall Size (IDxODxW)
28x37x20
Dynamic Load Rating
22 kN
Static Load Rating
36.5 kN
Reference Speed
14 000 rpm
Limiting Speed
16 000 rpm
Cage Material
Sheet Steel
Seal Type
None On Both Sides
Clearance
CN
Precision
Grade 0
Operating Temperature
-30 °C to +120 °C
Mass
0.052 kg
Details

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 28 mm Number of Rows Single Row
Outer Diameter 37 mm Cage Material Sheet Steel
Width 20 mm Seal Type None On Both Sides
Dynamic Load Rating 22 kN Clearance CN
Static Load Rating 36.5 kN Precision Grade 0
Fatigue Load Limit 4.55 kN Min Temperature -30 °C
Reference Speed 14 000 rpm Max Temperature +120 °C
Limiting Speed 16 000 rpm Size Standard Metric System
Rolling Element Roller Mass 0.052 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.

 

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