S7005 CEGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7005 CEGB/P4A Bearing Product Overview & Core Advantages
The S7005 CEGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to simultaneously handle combined radial and axial loads, this bearing features a single-row design with a 15° contact angle, optimized for high-speed operation. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-rigidity and high-performance systems. Preloaded as Light / Class B, it provides precise shaft positioning and minimal runout.
S7005 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7005: Basic model number, indicating a 25mm bore diameter and specific internal design.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial loads.
- E: Signifies an optimized internal design, featuring a larger ball complement and reinforced structure for increased load capacity.
- GB: Indicates Universal Matchable (SU) bearings supplied in a matched set of 2. This allows for precise preload control when mounted in pairs (DB or DF arrangements).
- P4A: Represents the tolerance class, specifying extremely tight dimensional and running accuracy tolerances superior to ABEC 7.
- Sealed: The bearing is furnished with integral seals for contaminant exclusion and lubricant retention.
- Grease Lubrication: Pre-lubricated with high-performance grease suitable for the specified temperature range.
S7005 CEGB/P4A Bearing Structural Features & Performance Benefits
High Precision and Rigidity: Manufactured to P4A tolerance class with a phenolic cage, this bearing delivers exceptional running accuracy and dimensional stability, crucial for applications requiring minimal vibration and high system rigidity.
Superior Load Capacity: The optimized "E" design incorporates a larger ball diameter (6.35mm) and a full complement of 14 balls, resulting in a high dynamic load rating of 1872 lbf and static load rating of 934 lbf for its compact bearing dimensions (25mm x 47mm x 12mm).
Excellent High-Speed Performance: The combination of the 15° contact angle, lightweight phenolic cage, and precision grinding enables a high limiting speed of 83,000 rpm. The universal matching (SU) capability allows for precise preload setting in paired arrangements, further enhancing high-speed stability.
Ready-to-Install and Reliable: As a sealed and pre-greased unit, the bearing is protected from contamination and is lubricated for life in many applications, reducing maintenance requirements and ensuring long-term reliability within its operating temperature range.
S7005 CEGB/P4A Bearing Typical Application Areas
The S7005 CEGB/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
- Medical and Dental Handpieces
