693ZZ Shielded Wheel Ball Bearing is a popular size that could be used in many RC Cars and Trucks, 3D printers, etc. Bearings are made of chrome steel, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.

Specifications

• Outside Diameter: 8mm
• Inside Diameter: 3mm
• Width: 4mm
• Mass: 0.5g per piece
• RPM Limit: grease:60000rpm, oil:67000 rpm
• Vibration Level: Above V1 standard and below V2 standard.
• Shield/ Closure Codes: ZZ (Two side metal shields)
• Lubrication Temperature Range: -20C to 120C
• ABEC Tolerance Codes: ABEC1