S71913 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
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S71913 CDGA/P4A Bearing Product Overview & Core Advantages
The S71913 CDGA/P4A is a metric precision angular contact ball bearing designed for exceptional performance in demanding applications. This sealed single bearing features an Extra Light (Class A) preload and meets the stringent P4A tolerance class, ensuring high running accuracy and minimal vibration. Its compact design, with a 65 mm bore and 13 mm width, provides a high load capacity in a minimal envelope. Engineered to handle combined radial and axial loads simultaneously, it is ideal for applications requiring high rigidity, high-speed operation up to 36,000 rpm, and long-term reliability.
S71913 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series with a 15° contact angle.
- 1913: Standard size designation (65mm bore, 90mm OD, 13mm width).
- CDGA: Universal Matchable (SU) bearing designed for preloaded duplex arrangements. "C" denotes a specific internal design and 15° contact angle, and the suffix indicates it can be universally matched in any combination (DB, DF, DT) without loss of preload.
- P4A: Tolerance class exceeding ABEC 7/ISO P4 standards, specifying even tighter tolerances for bore, outer diameter, and width for superior precision.
S71913 CDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4A tolerance class with an Extra Light preload, this bearing eliminates internal clearance, providing superior shaft positioning accuracy and system stiffness, which is critical for high-precision spindles.
Optimized Load Capacity: The 15° contact angle and robust construction using chrome steel rings and balls enable efficient handling of combined radial and axial loads.
Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the grease lubrication and optimized internal geometry contribute to a high limiting speed of 36,000 rpm.
Maintenance-Free Operation: The integral seals retain the factory-fill grease and effectively shield the bearing from contaminants, ensuring long service life and reliable performance across a temperature range of -30°C to 110°C.
S71913 CDGA/P4A Bearing Typical Application Areas
The S71913 CDGA/P4A is ideally suited for high-performance machinery requiring extreme precision and speed, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Advanced Robotics and Automation Equipment
