S7012 CE/P4AQBCB
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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S7012 CE/P4AQBCB Bearing Product Overview & Core Advantages
The S7012 CE/P4AQBCB is a super-precision angular contact ball bearing designed for the most demanding applications. This quadruplex back-to-back (QBC) matched set delivers exceptional system rigidity and stability, capable of handling complex combined loads including high radial and bidirectional axial loads. Manufactured to P4A tolerance class and featuring a light preload (Class B), it is engineered for superior running accuracy, high-speed performance, and long-term reliability in precision machinery.
Model Code Breakdown
- S7012: Basic model number, indicating a 60mm bore diameter super-precision bearing.
- CE: Designates a 15° contact angle and specific internal geometry optimized for high-speed operation.
- P4A: Indicates the tolerance class, specifying extremely tight dimensional and running accuracy standards (superior to ABEC 7).
- QBC: Denotes the bearing is supplied as a Quadruplex Back-to-Back matched set of four bearings, providing maximum moment stiffness.
- Sealed: The bearing is equipped with integral seals for contamination protection and retention of lubricant.
- Grease Lubrication: The bearing is pre-lubricated with grease, suitable for the specified temperature range of -30°C to 110°C.
S7012 CE/P4AQBCB Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system that effectively resists moment loads and shaft deflection. This configuration provides superior support for combined radial and axial loads.
High-Speed Capability: The phenolic cage offers excellent performance at high rotational speeds, contributing to a high limiting speed. The optimized internal design with a 15° contact angle further enhances high-speed suitability.
Precision and Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high positional accuracy and smooth operation.
Enhanced Service Life and Reliability: The combination of chrome steel rings and balls, a sealed design, and pre-applied grease provides robust protection against contamination and ensures long-term, maintenance-free operation within the specified temperature range.
S7012 CE/P4AQBCB Bearing Typical Application Areas
This high-precision bearing set is ideally suited for applications where extreme rigidity, high speed, and exceptional accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other critical navigation equipment.
- High-Frequency Spindles: PCB drilling and routing machines.
