7012 ACDTP/P4B
7000 Series Super Precision Angular Contact Ball Bearings
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7012 ACDTP/P4B Bearing Product Overview & Core Advantages
The 7012 ACDTP/P4B is a single-row angular contact ball bearing designed for applications demanding high precision and superior performance under combined loads. Its primary advantage lies in its ability to support significant radial loads and one-directional axial loads simultaneously, making it an ideal choice for high-speed spindles and precision machinery. Manufactured to a P4 (ABEC-7) tolerance class, it offers exceptional running accuracy. The bearing is pre-lubricated and features a phenolic resin cage, contributing to its high limiting speed of 13,000 rpm and reliable operation.
7012 ACDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
- 7012: Basic designation indicating a metric series bearing with a 60 mm bore and 95 mm outside diameter.
- AC: Angular Contact design, optimized for combined loads.
- D: Signifies a high contact angle of 25°, providing high axial load capacity.
- T: Indicates the cage material is Phenolic Resin (Textolite), suitable for high-speed operation.
- P: Denotes a Preload is applied, ensuring high rigidity and precise shaft positioning.
- /P4B: Specifies the tolerance class P4 (ABEC-7), indicating very high precision levels. The "B" may indicate specific internal clearance or fitting practice.
7012 ACDTP/P4B Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The single-row angular contact design, combined with a 25° contact angle and factory-applied preload, provides high system rigidity and minimizes axial and radial runout, which is critical for high-precision applications.
Superior Load Capacity: Engineered to handle combined radial and axial loads efficiently. With a dynamic load rating of 8775 lbf and a static load rating of 7538 lbf, it offers reliable performance in demanding conditions.
High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and pre-lubrication enable a high limiting speed of 13,000 rpm.
Material and Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability and fatigue resistance. The open design allows for customized lubrication regimes if required.
7012 ACDTP/P4B Bearing Typical Application Areas
The 7012 ACDTP/P4B is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors and Spindle Drives
- Precision Gearboxes
- Robotics and Automation Equipment
- Medical Equipment (e.g., high-speed dental handpieces)
