NSK 684 ZZ - Deep Groove Ball Bearing 4x9x4 mm

NSK 684 ZZ - Deep Groove Ball Bearing 4x9x4 mm

The NSK 684 ZZ is a high-precision deep groove ball bearing with dimensions 4 mm inner diameter x 9 mm outer diameter x 4 mm width, featuring double metal shields (ZZ) to protect against dust and moisture. Manufactured to ABEC-1 and C3 internal clearance standards, this miniature bearing delivers low friction, high-speed performance, and reliable longevity.

Key features include:

• Compact dimensions for space-constrained applications

• Double-sided shielding enhances protection and maintains internal lubrication

• High maximum speed up to 63,000 rpm, suited for demanding environments

• Steel cage construction ensuring stability and resistance to wear

• High load capacity for its size: ~640 N dynamic, ~225 N static

This versatile bearing is ideal for:

• Electric motors and fans

• RC vehicles and hobby applications

• Pumps, compressors, and small appliances

• Precision instruments and control mechanisms

📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, budynek 4
🚚 24 h Delivery - Fast order fulfillment

Keywords (SEO-optimized search terms)

NSK 684 ZZ deep groove bearing, miniature ball bearing 4x9x4, shielded bearing, high-speed bearing, precision bearing, NSK 684ZZ

FAQ

Q1: What does “ZZ” mean?
A: It denotes double metal shields on both bearing sides, protecting the interior from contaminants.

Q2: What is the maximum speed?
A: Rated for up to 63,000 rpm, depending on lubrication and operating conditions.

Q3: What clearance and precision class?
A: It features C3 internal clearance and ABEC-1 (standard) precision.

Q4: Typical applications?
A: Suited for electric motors, small machinery, RC toys, precision devices, pumps, and ventilation systems.

Reviewed by AI:
Optimized to match real search queries and Google algorithms, this description is engineered to secure top positions in global and Polish search results, emphasizing technical accuracy, relevant keywords, and B2B purchase triggers.