Overview
The NSK 687ZZ bearing is a single-row deep groove ball bearing engineered for high-performance applications requiring precision and reliability in confined spaces. With inner diameter 7mm, outer diameter 14mm, and width 5mm, this bearing is constructed from high-quality chrome steel. The NSK 600 series deep groove ball bearing is double-shielded with metric dimensions and has a single-row deep-groove geometry for high speeds and supporting both radial and axial loads.
Key Features
- Double Shielded (ZZ): Shields on both sides keep lubricant in and contaminants out
- High-Speed Capability: Maximum rotational speed of 40,000 RPM
- Radial & Axial Load Support: Deep groove design accommodates both radial and axial loads
- Pressed Steel Cage: Evenly spaces balls for even load distribution and reduces friction, vibrations, and noise
- Pre-Lubricated: Pre-lubricated with grease for immediate installation
- Low Maintenance: Simple construction requires little maintenance, and compact dimensions suit applications where space is limited
Technical Specifications
- Bearing Type: Single Row Deep Groove Ball Bearing
- Bore Diameter (ID): 7 mm
- Outer Diameter (OD): 14 mm
- Width (B): 5 mm
- Material: Chrome Steel
- Shielding: Double Metal Shields (ZZ)
- Dynamic Load Rating: 1,150 N (approx.)
- Static Load Rating: 510 N
- Max Speed (Grease): 40,000–45,000 RPM
- Internal Clearance: C0 (Normal)
- Lubrication: Pre-greased, self-lubricating
- Cage Type: Pressed Steel
- Quantity per Order: 10 bearings
- Condition: New in Box
Typical Applications
This bearing is ideal for various automotive and industrial applications, providing smooth operation and reduced friction. Common uses include:
- Automotive: Electric power steering systems, motor applications, wheel hubs
- Industrial Equipment: Conveyors, pumps, robotics, and factory automation
- Consumer Electronics: High-speed, noise-sensitive environments
- Spindle and Precision Machinery: Applications requiring minimal heat generation and vibration
- Dental and Medical Equipment: Compact, low-friction rotating components
Compatibility & Replacements
Compatible With
- Standard bearing housings designed for 7mm bore metric bearings
- Metric machinery and equipment requiring miniature bearing solutions
- High-speed spindle and precision motor applications
- OEM equipment from automotive, industrial, and consumer electronics manufacturers
Replaces / Drop-In Replacement For
- NSK 687 (open version, where shielding is not required)
- Other OEM equivalent miniature deep groove ball bearings with 7×14×5mm dimensions
- Compatible with equipment originally specified for NSK 687ZZ1 variants
Works With
- Double-shielded bearing specifications (ZZ designation per NSK and ISO standards)
- Metric bearing standards and DIN specifications
- Industrial automation equipment and machinery using miniature bearing solutions
- Standard bearing lubricants and greases for deep groove ball bearings
