Overview
The General Bearing 77R6 is a precision miniature ball bearing designed to deliver reliable performance in space-constrained and high-speed applications. This single-row radial bearing features double metal shields on both sides, providing pre-lubricated, ready-to-use performance upon delivery. Chrome steel construction ensures durability and load-bearing capability across a wide range of industrial and commercial environments.
Key Features
- Double Metal Shields: Factory-sealed protection minimizes debris ingress while retaining pre-applied grease lubrication
- Chrome Steel Construction: High-strength material withstands moderate radial and axial loads
- Pre-Lubricated: Ready for immediate installation without additional greasing
- Compact Miniature Design: Ideal for applications where space constraints are critical
- High-Speed Capable: Low-friction operation enables extended operating speeds
Technical Specifications
- Bore Diameter (ID): 3/8″ (0.3750 in / 9.525 mm)
- Outside Diameter (OD): 7/8″ (0.8750 in / 22.225 mm)
- Width: 9/32″ (0.2812 in / 7.142 mm)
- Bearing Type: Single Row Deep Groove Ball Bearing
- Closure Type: Double Metal Shields (ZZ)
- Bore Style: Straight Round Bore
- Material: Chrome Steel
- Internal Clearance: C3 (Standard)
- Snap Ring: None
- Lubrication: Grease Pre-Applied
Typical Applications
- Electric motors and fans
- Automotive component assemblies
- Industrial medical handpieces and surgical equipment
- RC vehicles and hobby applications
- Consumer electronics and household appliances
- Robotics and automation systems
- Surveillance and imaging equipment
- Flow meters and precision instruments
Compatibility & Replacements
Compatible With
- Any system or application requiring a 3/8″ bore, 7/8″ OD miniature radial ball bearing
- Standard industrial bearing housings and shaft mounting assemblies
- High-speed spindle and motor applications up to 32,000 RPM (grease lubricated)
Replaces / Drop-In Replacement For
- S3KDD
- RI-1438ZZ
- R12028XZ
- R6Z / 7R6
- EE-3-ZZ
- DDRI-1438ZZ / SSRI-1438ZZ
- R6ZZ / R6-ZZ
Works With
- Standard bearing greases and oils (verify with equipment manufacturer specifications)
- Metric and inch-based mechanical assemblies
- Temperature ranges suitable for industrial and consumer applications
