‌627-ZZ Deep Groove Ball Bearing Technical Documentation‌

‌1. Product Overview‌

• ‌Model‌: 627-ZZ
• ‌Type‌: Double Shielded Deep Groove Ball Bearing
• ‌Precision Grade‌: Standard (P0)

‌2. Detailed Parameters‌

3. Performance Characteristics‌

• ‌Type‌: Deep groove ball bearing with double metal shields (ZZ)
• ‌Dimensions (mm)‌: Inner diameter (d) = 7, Outer diameter (D) = 22, Width (B) = 7‌
• ‌Dynamic Load Rating (Cr)‌: 3,300 N (335 kgf)
• ‌Static Load Rating (Cor)‌: 1,370 N (140 kgf)‌
• ‌Speed Limits‌:
  • Grease lubrication: 30,000 rpm (open), 28,000 rpm (sealed)
  • Oil lubrication: 36,000 rpm (open)‌
• ‌Weight‌: 12.7–12.9 g (varies by seal type)‌
• ‌Tolerance‌: Accommodates shaft misalignment of 8'–16'‌

• ‌Application Scenarios‌

• ‌Typical Uses‌: Electric mixers, air purifiers, medical devices, food processing equipment, and precision instruments‌.
• ‌Advantages‌: Low friction, high-speed capability, and suitability for radial/light axial loads‌.
• 4. Mechanical Performance‌
• ‌Load Capacity‌: Primarily for radial loads, with limited axial load support‌
• ‌Sealing‌: Double metal shields (ZZ) protect against contaminants, extending service life‌
• ‌Material‌: High-carbon chromium steel (standard), with options for stainless steel or ceramic hybrids‌
  .

‌ 5. Applications‌

• ‌Industrial Machinery‌:
  • Foundry equipment , industrial furnaces , heat treatment lines
  • Pulverizers , spinning machines , industrial dryers
• ‌Precision Instruments & Motors‌:
  • High-speed pumps , miniature motors , small motors
  • Suitable for space-constrained, high-speed rotating devices
• ‌Other Equipment‌:
  • Textile machinery , packaging printers , agricultural machinery
  • 

‌ 6. Key Advantages‌

• ‌High-Speed Performance‌: Optimized for stable operation at ultra-high RPMs
• ‌Durability‌: Dust shields extend lifespan in harsh environments
• ‌Versatility‌: Handles combined radial/axial loads