30-Pack Full Ceramic 638 ZrO2 Miniature Ball Bearings 8x28x9mm

Wholesale 638 Full Ceramic Ball Bearing, measures an inner diameter of 8mm, outer diameter is 28mm and the width is 9mm.

• 638 Ball Bearing
• Type:Full Ceramic Ball Bearing
• Brand: VXB
• Cage Material: PTFE (Polytetrafluoroethylene)
• Balls: Made from Zirconia Ceramic (ZrO₂)
• Races Material: Zirconia (ZrO₂) Ceramic
• Dimensions: 8mmx28mmx9mm
• Inner Diameter: 8mm
• Outer Diameter: 28mm
• Width: 9mm
• Quantity: 30 Bearings