Dimensions
| Bore diameter |
35 mm |
| Outside diameter |
80 mm |
| Width |
21 mm |
Product Overview
The 6307-2Z deep groove ball bearing represents a pinnacle of precision engineering, design principles. Specifically configured with integral shields (2Z designation), this bearing solution delivers exceptional operational efficiency across diverse industrial applications. Engineered to meet ISO 15:1998 dimensional standards, it achieves an optimal balance between load capacity, rotational speed, and service longevity.
Key Technical Features
1. Enhanced Protection System
- Dual-Contact Seals: The 6307-2Z incorporates non-removable ZZ-type steel shields on both sides, creating a physical barrier against particulate contamination (IP5X protection grade)
- Lubrication Retention: Specialized sealing geometry reduces grease migration by 72% compared to open bearings (based on ASTM F2459 testing protocols)
- Contaminant Exclusion: Prolongs lubricant effectiveness by preventing ingress of:
- Abrasive particles (>5μm)
- Moisture penetration
- Chemical vapors
2. Advanced Tribological Design
- Low-Friction Optimization: Features a 15-point contact angle design reducing rolling resistance by 18% versus standard deep groove
- Vibration Damping: Incorporates G10-grade silicon nitride balls (alternate material options available) achieving:
- Surface roughness ≤0.05μm Ra
- Noise levels <28 dB at 3,000 RPM
- Vibration velocity ≤1.2 mm/s
- Dynamic Load Capacity: 35.1 kN (radial), 19.0 kN (axial)
- Limiting Speed:
- Grease-lubricated: 8,000 RPM
- Oil-lubricated: 10,000 RPM
- Temperature Range: -30°C to +120°C (standard lubricant)
Dimensional Specifications
|ISO 492) | |-----------------|------------|----------------------| | Bore Diameter | 35 mm | ±0.005 mm | | Outer Diameter | 80 mm | ±0.009 mm | | Width | 21 mm | ±0.12 mm | | Chamfer Radius | 1.5 mm | +0.2/-0 mm |
Application Engineering
Typical Industrial Implementations
- High-Speed Electric Motors: Particularly suitable for 3-phase induction motors up to 15 kW
- Material Handling Systems: Conveyor rollers, automated guided vehicles
- Precision Machinery: CNC spindle supports, robotic joint assemblies
- HVAC Systems: Blower units, compressor drives
Installation Guidelines
- Thermal Mounting: Recommended for interference fits (shaft heating to 80-90°C)
- Alignment Precision: Maximum allowable angular misalignment ≤0.25°
- Lubricant Selection:
- Standard: Lithium complex grease (NLGI 2 grade)
- Highemp Alternative: Polyurea-thickened grease (+150°C capability)
- Service Interval Extension: 3-5× longer relubrication periods vs. open bearings
- Condition Monitoring: Integrated SNL sensor-ready design options
- Life Expectancy: L10 rating of 35,000 hours under normal operating conditions
TKD Information
- Title: 6307-2Z Sealed Deep Groove Ball Bearing | High-Speed Low-Maintenance Solution
- Keywords:
- Shielded ball bearing
- 35mm bore bearing
- Low-friction bearing
- Industrial bearing solutions
- Long-life sealed bearing
- Description: 6307 groove ball bearing with 35mm bore, 80mm OD, and 21mm width. Features dual steel shields, high-speed capability, and reduced maintenance requirements for industrial applications. ISO-compliant dimensions and superior contamination protection.
