7012 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7012 CDGA/P4A Bearing Product Overview & Core Advantages
The 7012 CDGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing with an Extra Light (Class A) preload, it delivers superior running accuracy and minimizes axial and radial runout. Its 15° contact angle is optimized for handling combined loads, particularly high-speed applications where precise shaft positioning is critical. Manufactured to P4A tolerance class, this bearing ensures outstanding dimensional and running accuracy for the most rigorous performance requirements.
7012 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing series and size designation (60mm bore, 95mm OD, 18mm width). |
| C | 15° contact angle, optimized for high-speed operation and combined loads. |
| DG | Universal Matchable bearing. Two bearings can be arranged in a back-to-back (DB) or face-to-face (DF) configuration to support moment loads. |
| A | Extra Light preload (Class A). Provides minimal internal clearance for high rigidity and precise rotational accuracy. |
| P4A | High-Precision Tolerance Class. Exceeds ABEC-7 standards, ensuring extremely tight dimensional and running tolerances. |
7012 CDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The Extra Light preload eliminates internal clearance, resulting in significantly increased system stiffness and exceptional running accuracy, which is critical for applications like machine tool spindles.
Superior High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio, reduced friction, and is ideal for high-speed operation, contributing to the bearing's limiting speed of 34,000 rpm.
Optimized for Combined Loads: The 15° contact angle effectively supports combined radial and axial loads, making it a versatile choice for complex loading conditions.
Universal Matching Design: The Universal Matchable (SU) feature allows for simplified mounting of multiple bearings in pre-determined sets (back-to-back or face-to-face) to handle moment loads without selective assembly.
Premium Material Construction: Manufactured from chrome steel for rings and balls, the bearing ensures high durability, long service life, and consistent performance under the specified temperature range of -30°C to 110°C.
7012 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers.
- High-Frequency Motors and Spindles: Where high rotational speed and accuracy are paramount.
- Precision Instrumentation: Medical devices, measuring equipment, and optical scanners.
- Robotics: High-accuracy joints and arm linkages.
- Aerospace Actuation Systems: Control surface mechanisms and auxiliary power units.
