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7307AC Angular Contact Ball Bearings Customizable High Speed Precision Bearings

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7307AC Angular Contact Ball Bearings Customizable High Speed Precision Bearings

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Bearing Material : Bearing Steel GCr15

Model : Customizable

Payment Terms : T/T,Western Union,MoneyGram,PayPal

Width : 21 mm

Type : High Speed Precision Bearings

Delivery Time : 5-8 work days

Outer Diameter : 80 mm

Bore : 35 mm

Brand Name : Kesle

Place of Origin : CHINA

MOQ : 1

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7307AC Angular Contact Ball Bearings Customizable High Speed Precision Bearings
7307AC Angular Contact Ball Bearing High Speed Precision Performance For Precision Equipment
Basic Parameters
Bore diameter (d) 35mm
Outer diameter (D) 80mm
Width (B) 21mm
Contact angle 25° (suffix "AC" denotes standard angle)
Weight Approximately 0.47kg
Structure Single-row, non-separable design with inner/outer rings and ball assembly
Core Performance Specifications
Load Capacity
  • Dynamic load rating (Cr): 38.2~40kN
  • Static load rating (C0r): 24.9~26.3kN
  • Material: GCr15/SUJ2 high-carbon chromium bearing steel, heat-treated to achieve surface hardness of HRC58-62
Speed & Precision
  • Limiting speed:
    • Grease-lubricated: 7,500~8,000rpm
    • Oil-lubricated: 10,000~11,000rpm
  • Precision class: Standard P0 (customizable to P5 for high-accuracy applications)
Technical Features
  • Axial-radial load capability: Supports combined radial and unidirectional axial loads; paired installation required for bidirectional axial loads
  • High-speed stability: Optimized raceway geometry and low-friction cage design enable smooth operation at elevated speeds
Structural & Environmental Adaptability
Tolerance Compatibility
  • Shaft: H7/k6
  • Housing: J7
Environmental Resistance
  • Standard version: Suitable for -20°C to 120°C operating temperatures
  • High-temperature variants: Up to 300°C with special heat-resistant materials
  • Corrosion-resistant options: Stainless steel available for harsh environments
Sealing Options
  • Open design (standard)
  • Optional 2RS (rubber seals) or ZZ (metal shields) for dust/moisture protection
Typical Applications
Industrial Machinery
  • Machine tool spindles: Provides precision and rigidity for high-speed machining
  • Gearboxes and reducers: Handles radial loads and torque transmission in heavy-duty systems
  • Pumps and compressors: Resists axial thrust from fluid pressure
Automotive & Transportation
  • Turbochargers: Supports high-speed rotation under extreme temperatures
  • Differential drives: Ensures smooth power transfer in vehicle drivetrains
Energy & Precision Equipment
  • Electric motor shafts: Optimized for low noise and vibration
  • Robotics: Enables precise positioning in robotic joints
Maintenance & Lubrication Guidelines
Lubrication
  • Grease: Lithium-based grease with 10%-15% cavity filling; synthetic grease recommended for high-temperature applications
  • Oil: Circulating oil systems preferred for continuous high-speed operation to enhance heat dissipation
Inspection Intervals
  • Monitor temperature and noise during operation
  • Replace lubricant every 2,000~5,000 hours depending on load and environment
Certifications & Compatibility
  • Standards compliance: Meets ISO 281 (load ratings) and ISO 15 (precision)
  • Cross-brand compatibility: Interchangeable with equivalent models from major manufacturers
Customization Options
Parameter Adjustments
  • Contact angle: 15° or 40° available via special order
  • Surface coatings: Phosphating or black oxide for corrosion resistance
Special Configurations
  • Full ceramic for non-magnetic or high-speed applications
  • Laser-etched part numbers for traceability
Summary
The 7307AC angular contact ball bearing combines high load capacity, precision, and adaptability, making it ideal for critical industrial and automotive applications. Its non-separable design and standardized interfaces simplify installation, while material and sealing options extend its usability across diverse environments. Paired with proper lubrication and maintenance, this bearing delivers reliable performance in high-speed, heavy-load scenarios.

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7307AC Angular Contact Ball Bearings

      

Angular Contact Ball Bearings Customizable

      

Customizable High Speed Precision Bearings

      
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