S71907 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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S71907 CDGA/P4A Bearing Product Overview & Core Advantages
The S71907 CDGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single bearing with Universal Matchable (SU) designation, it can be universally paired with another identical bearing to form a preloaded duplex set, offering superior rigidity and runout accuracy. Its P4A tolerance class ensures extremely tight dimensional and running accuracy, making it ideal for high-precision spindles and other critical machinery components. The combination of a phenolic cage, 15° contact angle, and pre-lubrication with grease enables reliable operation at high rotational speeds while accommodating combined radial and axial loads.
S71907 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Indicates a super-precision bearing design.
- 1907: Standard size designation (35mm bore, 55mm OD, 10mm width).
- CD: Signifies a 15° contact angle and Universal Matchable (SU) design, allowing for flexible pairing in duplex arrangements.
- G: Denotes the use of a phenolic resin cage, beneficial for high-speed operation.
- A: Specifies an Extra light preload (Class A).
- P4A: Defines the tolerance class, representing very high precision levels for both dimensional and running accuracy.
S71907 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: Manufactured to P4A tolerance class standards, this bearing provides extremely low runout and high dimensional stability. The Universal Matchable (SU) feature allows for precise duplex set mounting, significantly enhancing system rigidity.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry enable the bearing to effectively support combined radial and axial loads.
- Excellent High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the grease lubrication and optimized internal design contribute to a high limiting speed of 56,000 rpm.
- Sealed & Pre-Lubricated Design: As a sealed bearing pre-filled with grease, it is protected from contamination and is maintenance-free throughout its service life within the specified temperature range of -30°C to 110°C.
S71907 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors and Precision Spindles
- Dental Handpieces and Medical Equipment
- High-Speed Automation Robotics
- Precision Instrumentation and Optical Scanners
