ZZ vs 2RS Bearings: What’s the Difference?

What Does ZZ Mean?

ZZ bearings use metal shields on both sides.

Advantages:

• Lower friction
• Higher speed
• Lower operating temperature
• Longer grease life

Applications:

• Electric motors
• Fans
• Precision equipment

What Does 2RS Mean?

2RS bearings use rubber seals on both sides.

Advantages:

• Better sealing performance
• Better dust protection
• Better moisture resistance

Applications:

• Outdoor equipment
• Agricultural machinery
• Food processing equipment

Comparison Table

Which Bearing Should You Choose?

Choose ZZ when:

• High speed operation
• Low friction required
• Indoor environment

Choose 2RS when:

• Dusty environment
• Moisture exposure
• Better sealing required 
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