S71908 CE/P4ADGC
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71908 CE/P4ADGC Bearing Product Overview & Core Advantages
The S71908 CE/P4ADGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a matched set bearing (Universal Matchable SU), it provides superior performance in handling combined loads, including significant radial loads and bidirectional axial loads. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery. The combination of a phenolic cage and pre-lubrication facilitates excellent high-speed performance and operational reliability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71908 | Precision angular contact ball bearing series with 40mm bore. |
| CE | Specific internal design for optimized contact angle and preload (Moderate / Class C). |
| P4A | High precision tolerance class exceeding ABEC 7, ensuring minimal runout and vibration. |
| DGC | Indicates a sealed bearing, pre-lubricated with grease suitable for the specified temperature range. |
S71908 CE/P4ADGC Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 15° contact angle and universal matching (SU) capability allows two bearings to be precisely paired, creating a system with high rigidity that effectively supports combined radial and axial loads from both directions.
Optimized High-Speed Performance: The lightweight and robust phenolic cage minimizes centrifugal forces and friction, contributing to a high limiting speed of 41,000 rpm. This makes it an excellent high-speed bearing for demanding applications.
Sealed and Pre-Lubricated for Longevity: The integrated seals protect against contamination and retain the high-performance grease. This sealed design provides a maintenance-free solution within the operating temperature range of -30°C to 110°C, ensuring long service life and consistent performance.
S71908 CE/P4ADGC Bearing Typical Application Areas
This precision bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Robotics: High-accuracy joints and actuators.
