Rolling Element Bearing

• Description: Ball or rollers are used to prevent or minimize rubbing.
• Friction: Rolling coefficient of friction with steel can be ~0.005.
• Stiffness: Good, but some slack is usually present.
• Speed: Moderate to high (often requires cooling).
• Life: Moderate to high (depends on lubrication, often requires maintenance).
• Notes: Used for higher moment loads than plain bearings with lower friction.