Product Code: 638ZZ
Description: 638 ZZ Shielded Micro Ball Bearing
Number Pieces: 1
Brand: NTN, NSK, Koyo, KSM, FAG or SKF

Inside Diameter: 8mm
Outside Diameter: 28mm
Width Dimension: 9mm
Bearing Material: Steel
Seal Material: Metal Shield
Limiting speed rpm: 31,000
Basic load rating (N)-Static: 1,590
Basic load rating (N)-Dynamic: 4,000

The most common type of bearing.
Single row of balls.
Can take radial load, & low axial load in 2 directions
High speed
Low noise/vibration
Low friction torque


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