Dimensions
| Bore diameter |
25 mm |
| Outside diameter |
62 mm |
| Width |
17 mm |
6305-2Z Deep Groove Ball Bearing with Seals/Shields: Precision Engineering for Demanding Applications
Overview
The 6305-2Z optimal fusion of versatility and performance in radial load management. Engineered with integral seals (2Z designation), this bearing type delivers exceptional contamination protection while maintaining operational efficiency across diverse industrial environments. Its balanced design addresses critical requirements for modern machinery: reduced maintenance needs, extended service life, and consistent performance under complex loading conditions.
Core Technical Advantages
1. Advanced Sealing Technology
- Dual-Purpose Protection: Integrated non-contact seals (2Z configuration) create an effective barrier against particulate ingress while retaining lubricant within the bearing assembly
- Lifetime Optimization: Laboratory tests show 40-60% longer service life compared to open bearings in contaminated environments
- ubrication Efficiency: Pre-greased with high-temperature lithium complex grease (standard), maintaining optimal lubrication throughout service intervals
- Speed Capability: Optimized raceway geometry enables DN values up to 280,000 mm/min (oil lubrication)
- Friction Management: design achieve 15-20% lower friction torque than conventional sealed bearings
- Vibration Control: NRRO (Non-Repeatable Run-Out) values below 1 μm ensure smooth operation in sensitive applications
3. Mechanical Robustness
- Load Capacity Profile:
- Dynamic radial load: 22.4 kN
- Static radial load: 11.6 kN
- Axial load capacity: 35% of radial rating
- Material Specification: Chrome steel (GCr15) components with Rockwell C 60-64 hardness
- Temperature Range: -30°C to +120°C (standard grease), extendable with specialty lubricants
Dimensional Specifications (ISO 492) |
|-------------------|-------------|----------------------| | Bore Diameter | 25 mm | ±0.005 mm | | Outside Diameter | 62 mm | ±0.009 mm | | Width | 17 mm | ±0.12 mm | | Chamfer Dimension | 1.1 mm - |
Application Scenarios
Industrial Machinery
- Electric motor end shields
- Pump shaft support systems
- Material handling conveyor rollers
Automotive Systems
- Alternator bearing assemblies
- HVAC compressor units
- Transmission idler pulleys
Precision Equipment
- Medical device rotating components
- Laboratory centrifuge rot
Maintenance Considerations
- Relubrication Interval: 8,000-10,000 operating hours (standard conditions)
- Seal Replacement: Recommended during major overhauls (typically 5-7 years)
- Failure Indicators:
- Vibration velocity exceeding 4.5 mm/s RMS
- Temperature rise >15°C above ambient
- Surface Finish: Raceway superfinishing to Ra 0.05 μm minimizes wear initiation
- Cage Design: Glass fiber reinforced polyamide cage (standard) with 120°C thermal stability
- Quality Assurance: 100% production batch testing for:
- Vibration spectrum analysis
- Torque consistency verification
- Seal integrity pressure testing
TKD Metadata
- Title: 6305-2Z Sealed Deep Groove Ball Bearing | High-Speed Low-Maintenance Solution
- Keywords:
- Precision sealed ball bearings
- 25mm bore industrial bearings
- Low friction high speed bearings
- Maintenance-free bearing solutions
- Shielded deep groove bearings -Description**: 6305-2Z sealed deep groove ball bearing offers superior contamination protection and high-speed performance for electric motors, automotive systems, and industrial machinery. Features 25mm bore, 62mm OD, and optimized sealing technology for extended service life.
