7903 Full Ceramic Zirconium Oxide Angular Contact Ball Bearings, the inner diameter is 17mm, outer diameter is 30mm and the width is 7mm, this is a popular size that could be used in many applications, Bearing is made of Ceramic.

• Item: 7903 Ball Bearing
• Type: Angular Contact Full Ceramic Ball Bearing
• Balls: ZrO2 (Zirconium Oxide) Ceramic
• Inner/outer races: ZrO2 (Zirconium Oxide) Ceramic
• Cage: PTFE or PEEK
• Dimensions: 17mm x 30mm x 7mm/Metric
• ID (inner diameter)/Bore: 17mm
• OD (outer diameter): 30mm
• Width/Height/thickness: 7mm
• Size: 17 x 30 x 7 mm
• Quantity: One Bearing
• Highest Temperature: 356 (degrees fahrenheit) = 180 (degrees Celsius)