7007 ACDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7007 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7007 ACDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a single-row bearing with a 25° contact angle and Universal Matchable (SU) designation, it excels at handling combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class and featuring a light preload (Class B), this bearing delivers superior running accuracy, high rigidity, and stable performance in high-speed applications up to 56,000 rpm. Its compact design with a 35 mm bore, 62 mm outside diameter, and 14 mm width makes it ideal for space-constrained, precision machinery.
7007 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7007: Basic bearing series, indicating a 35 mm bore and metric dimensions.
- AC: Angular Contact design, optimized for combined loads.
- D: Signifies a high-precision bearing design.
- GB: Indicates Universal Matchable (SU) bearings, which can be paired in any combination (back-to-back, face-to-face, or tandem) without performance loss.
- P4A: Super Precision Tolerance Class, specifying extremely tight dimensional and running accuracy standards for the highest level of performance.
7007 ACDGB/P4A Bearing Structural Features & Performance Benefits
This bearing's performance stems from its optimized construction. The 25° contact angle provides an excellent balance between radial and axial load capacity. The phenolic resin cage ensures quiet operation, reduced friction, and superior performance at high speeds. The chrome steel rings and balls, combined with the P4A super precision tolerances, guarantee minimal vibration and exceptional running accuracy. The Universal Matchable (SU) feature allows for flexible arrangement in sets of up to 3 bearings, enabling customized preload and stiffness for specific application requirements. The light preload (Class B) eliminates internal clearance, resulting in enhanced system rigidity and precise shaft positioning.
7007 ACDGB/P4A Bearing Typical Application Areas
The 7007 ACDGB/P4A is ideally suited for high-precision, high-speed machinery where accuracy and reliability are paramount. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
- Medical and Dental Equipment
- Robotic Arm Joints and Drives
