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Features

Specifications

Type: Angular Contact Ball Bearings

Bearing Material: Bearing Steel GCr15

Bore: 25 Mm

Outer Diameter: 52 Mm

Width: 15 Mm

Model: Customizable

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7205AC Angular Contact Ball Bearings

Precision Equipment Angular Contact Ball Bearings

7205AC High Speed Ball Bearings

Basic Infomation

Place of Origin: CHINA

Brand Name: Kesle

Payment & Shipping Terms

Delivery Time: 5-8 work days

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

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7205AC Angular Contact Ball Bearings High Speed For Precision Equipment

Product Description

7205AC Angular Contact Ball Bearings High Speed For Precision Equipment

7205AC Angular Contact Ball Bearing High Speed Stable Performance For Precision Equipment

Basic Parameters

Bore diameter (d): 25mm
Outer diameter (D): 52mm
Width (B): 15mm
Contact angle: 25° (suffix "AC" denotes standard angle)
Weight: Approximately 0.135kg
Structure: Single-row, non-separable design with inner/outer rings and ball assembly

Core Performance Specifications

Load Capacity

Dynamic load rating (Cr): 15.8kN
Static load rating (C0r): 9.88kN
Material: GCr15/SUJ2 high-carbon chromium bearing steel, heat-treated to achieve surface hardness of HRC58-62

Speed & Precision

Limiting speed:
- Grease-lubricated: 11,000~12,000rpm
- Oil-lubricated: 15,000~16,000rpm
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 (e.g., back-to-back or face-to-face) required for bidirectional axial loads
High-speed stability: Optimized raceway geometry and low-friction cage design (e.g., J steel stamping) 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 (e.g., SUS440C) 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 (e.g., CNC lathes, milling machines)
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 (e.g., electric motor-driven turbo systems)
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 (e.g., NLGI 2) with 10%-15% cavity filling; synthetic grease (e.g., polyurea) 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 9001:2008 and industry standards (e.g., ISO 281 for load ratings)
Cross-brand compatibility: Interchangeable with equivalent models from major manufacturers (e.g., NSK 7205AC, Timken 7205AC)

Customization Options

Parameter adjustments

Contact angle: 15° (suffix "C") or 40° (suffix "B") available via special order
Surface coatings: Phosphating or black oxide for corrosion resistance

Special configurations

Full ceramic (Si3N4 balls): For non-magnetic or high-speed applications
Laser-etched part numbers: For traceability

Summary
The 7205AC 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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Contact Person :	orlenda li
Tel :	+8613713334285

7205AC Angular Contact Ball Bearings High Speed For Precision Equipment

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