S7005 ACE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7005 ACE/P4ADBB Bearing Product Overview & Core Advantages
The S7005 ACE/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched pair features a back-to-back (DB) arrangement and a P4A super-precision tolerance class, making it ideal for high-speed spindles and other demanding machinery. Its primary advantage lies in its ability to support combined radial and axial loads simultaneously while maintaining high operational stability and long service life under light preload (Class B) conditions.
S7005 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Basic bearing series, indicating a 25mm bore, 47mm OD, and 24mm width. |
| ACE | Designates a 25° contact angle and specific internal design optimized for high-speed operation. |
| P4A | Indicates a super-precision tolerance class with very tight dimensional and running accuracy limits. |
| DBB | Signifies the bearing set is supplied as a Duplex Back-to-Back (DB) matched pair, pre-configured for mounting. |
S7005 ACE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back arrangement creates a rigid bearing system that can withstand significant combined loads (radial and axial) and moments, providing exceptional support for spindles.
- Super-Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving high surface finishes and machining accuracy.
- Optimized High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and stable operation at the high limiting speed of 83,000 rpm. The standard grease lubrication is suitable for this speed range.
- Sealed & Pre-Lubricated: The bearing is sealed to protect against contamination and is pre-lubricated with grease, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S7005 ACE/P4ADBB Bearing Typical Application Areas
This high-precision duplex bearing is engineered for use in demanding applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy joints and arm assemblies.
- Medical Equipment: Spindles for dental drills and surgical handpieces.
- High-Frequency Motors and Aerospace Instrumentation.
