7001 ACDGD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7001 ACDGD/P4A Bearing Product Overview & Core Advantages
The 7001 ACDGD/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and high rigidity. Engineered to accommodate combined loads (radial and axial loads in one direction), this bearing features a 25° contact angle and a Heavy preload (Class D), ensuring exceptional rotational accuracy and system stability. Manufactured to the stringent P4A tolerance class and constructed from high-grade Chrome Steel, it is ideal for high-speed spindles and other precision machinery requiring reliable performance under demanding conditions.
7001 ACDGD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Significance |
|---|---|---|
| 7001 | Basic Bearing Series & Size Code | Indicates a metric, 12mm bore, 28mm OD, 8mm width angular contact bearing. |
| AC | Angular Contact | Optimized geometry for handling combined radial and axial loads. |
| D | Heavy Preload (Class D) | Provides maximum rigidity and minimizes axial/radial play for superior precision. |
| GD | Universal Matchable (SU) | Bearing is ground for universal matching, allowing for flexible arrangement in sets (e.g., back-to-back, face-to-face). |
| P4A | Tolerance Class | Denotes extremely high precision levels for runout and dimensional tolerances, surpassing ABEC 7 standards. |
7001 ACDGD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The Heavy preload (Class D) significantly increases bearing stiffness, making it exceptionally resistant to deflection under load. This is critical for maintaining accuracy in machine tool spindles and other high-precision applications. The P4A tolerance class ensures minimal runout and precise bearing dimensions.
Optimized Load Capacity: With a 25° contact angle, this bearing is specifically designed to handle significant axial loads in addition to radial loads, making it suitable for combined load scenarios.
High-Speed Capability: The lightweight and robust Phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 110,000 rpm. The open design and factory-applied lubrication facilitate efficient heat dissipation.
Universal Matching Design: The GD (Universal Matchable) suffix indicates that these bearings can be universally paired in any combination (e.g., DB, DF, DT) to create a matched set that accommodates complex load requirements, including bidirectional axial loads.
7001 ACDGD/P4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Robotic Arm Joints and Drives
- Medical and Dental Equipment Spindles
- Aerospace Actuators and Control Systems
