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Quick Details

  • Type: Ceramic Ball, Ceramic Ball
  • Brand Name: ZWZ
  • Bore Size: 17 mm
  • Outside Diameter: 30 mm
  • Model Number: 6903
  • Place of Origin: Shandong, China (Mainland)
  • Balls: ceramic Si3N4 ZrO2
  • Precision rating: P0,P4,P5,P6
  • Seals Type: Open Type, Z, ZZ, RS, 2RS
  • Material: ZrO2,Si3N4,rubber, plastic
  • Clearance: C2,C0,C3,C4,C5
  • Noise Level: Z1,Z2,Z3,Z4
  • Cage material: PTFE, PEEK, NYLON

Packaging & Delivery

Packaging Details 1. Industrial Exporting Package 2. Individual White Paper Box Packing 3. According to customers' requirement
Delivery Time 15-20 days after making order


silica balls bearing
1.High temperature-resistant
2.High accuracy ,High speed
3.Low friction, low noise,

silica balls bearing


Full Ceramic Ball Bearings silica balls bearing 6903


  silica balls bearing

1.High temperature-resistant
2.High accuracy ,High speed
3.Low friction, low noise



Full Ceramic 6903 Ball Bearings, the inner diameter is 17, outer diameter is 30 and the width is 7, this is a popular size that could be used in many applications, Bearings are made of Ceramic.


  • Item: 6903 Ball bearings
  • Type: Full Ceramic 
  • Quantity: One ball bearing 
  • Bearing Size: 17mm x 30mm x 7mm
  • Inner/outer races:  ZrO2 Ceramic
  • Balls: ZrO2 Ceramic
  • Cage: PTFE
  • Highest Temperature: 356 F (degrees fahrenheit) = 180 C (degrees Celsius)
  • Net Weight: 13.1 Grams
  • Equivalents: 61903 Bearings


Followings are the ceramic bearings displayed we are hot selling in the international market.




Above just are the some types of our products of ceramic, we also provide you with ones you would like to buy. Pls contact us without hesitation.

Transaction History of the Supplier

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Trade Assurance
China (Mainland) | Trading Company
Transaction Level:
Supplier Assessments:
8 Transactions 7,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $26,000
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