7203AC Single Row Angular Contact Bearing , Precision High Speed Low Friction Bearings
Price:
Negotiable
MOQ:
1
Delivery Time:
5-8 work days
Brand:
Kesle
Product Description
7203AC Single Row Angular Contact Bearing
Product Overview
The 7203AC Angular Contact Ball Bearing delivers high-precision performance for demanding high-speed applications. This single-row, non-separable bearing features optimized raceway geometry to reduce friction and heat generation during continuous operation.
Basic Parameters
| Parameter | Value |
|---|---|
| Bore diameter (d) | 17mm |
| Outer diameter (D) | 40mm |
| Width (B) | 12mm |
| Contact angle | 25° (suffix "AC" denotes standard angle) |
| Weight | Approximately 0.068kg |
| Structure | Single-row, non-separable design with inner/outer rings and ball assembly (J steel stamping cage) |
Core Performance Specifications
Load Capacity
- Dynamic load rating (Cr): 11.97kN (typical value, varies by manufacturer)
- Static load rating (C0r): 6.63kN (standard configuration)
- Material: GCr15/SUJ2 high-carbon chromium bearing steel, heat-treated to HRC58-62 for wear resistance
Speed & Precision
- Limiting speed:
- Grease-lubricated: 16,000~18,000rpm (NACHI/SKF reference)
- Oil-lubricated: 21,000~24,000rpm (optimized for high-speed applications)
- Precision class: Standard P0 (customizable to P5/P4 for high-accuracy machinery)
Technical Features
- Axial-radial load capability: Supports combined radial loads and unidirectional axial thrust; paired installation required for bidirectional loads
- High-speed stability: Optimized raceway geometry reduces friction and heat generation
Structural & Environmental Adaptability
- Tolerance compatibility: Shaft: H7/k6, Housing: J7
- Temperature range: Standard: -20°C to 120°C; High-temperature variants: Up to 300°C
- Sealing options: Open design (standard); Optional 2RS (rubber seals) or ZZ (metal shields)
Typical Applications
- Industrial Machinery: Machine tool spindles, gearboxes and reducers, pumps and compressors
- Automotive & Transportation: Turbochargers, electric motor shafts in EV drivetrains
- Precision Equipment: Robotics, medical devices including dental handpieces and diagnostic equipment
Maintenance & Lubrication Guidelines
- Lubrication: Lithium-based grease (NLGI 2) with 10%-15% cavity filling; synthetic grease recommended for high-temperature applications
- Inspection intervals: Monitor temperature and noise every 8-12 hours; replace lubricant every 2,000~5,000 hours
Certifications & Compatibility
- Meets ISO 9001:2015 and industry standards (ISO 281 for load ratings)
- Interchangeable with equivalent models from major manufacturers (NSK 7203AC, Timken 7203AC)
Customization Options
- Material upgrades: Ceramic variants (Si3N4 balls) for non-magnetic applications; Stainless steel (SUS440C) for corrosion resistance
- Special configurations: Laser-etched part numbers, phosphating or black oxide coatings
Summary
The 7203AC 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.
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Get in Touch
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Company
Dongguan Kesle Electronic Hardware Co., Ltd
Location
Guangdong Dongguan Kesile Electronic & Hardware Products Factory
Contact Person
orlenda li