7007 ACDGD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7007 ACDGD/P4A Bearing Product Overview & Core Advantages
The 7007 ACDGD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional rigidity. Designed to accommodate primarily axial loads in one direction, this bearing features a 25° contact angle and a P4A super-precision tolerance class, making it ideal for machine tool spindles and other high-speed, high-accuracy machinery. Its heavy preload (Class D) ensures minimal deflection under load, providing superior system stability and positioning accuracy.
7007 ACDGD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series with 35mm bore, 62mm OD, 14mm width |
| AC | Angular Contact design with 25° contact angle |
| D | Heavy preload (Class D) for maximum rigidity |
| GD | Universal Matchable (SU) - can be paired in sets |
| P4A | Super-precision tolerance class exceeding ABEC 7 standards |
7007 ACDGD/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The combination of heavy preload and P4A tolerance class ensures exceptional stiffness and running accuracy, critical for applications requiring minimal deflection and precise positioning.
Optimized Load Capacity: With a 25° contact angle, this bearing efficiently handles combined radial and axial loads, particularly excelling in unidirectional axial load applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio, contributing to stable operation at the limiting speed of 56,000 rpm while reducing centrifugal forces.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be supplied in matched sets of 3 bearings for simplified installation and optimal preload configuration in multi-bearing arrangements.
7007 ACDGD/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding machines
- High-Speed Machining Centers - Applications requiring superior rigidity and accuracy
- Precision Instrumentation - Medical equipment and measuring devices
- Robotic Systems - High-accuracy joints and positioning systems
- Aerospace Components - Guidance systems and control mechanisms
