7012 ACEGA/HCPA9A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7012 ACEGA/HCPA9A Bearing Product Overview & Core Advantages
The 7012 ACEGA/HCPA9A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to PA9A tolerance class, this bearing delivers superior speed capabilities and long-term reliability. Its 25° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously. As a Universal Matchable (SU) bearing, it can be precision-paired with another identical bearing to form a pre-loaded set, ensuring optimal stiffness and rotational accuracy in high-performance assemblies.
7012 ACEGA/HCPA9A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7012 ACEGA/HCPA9A provides detailed technical specifications:
- 7012: Basic bearing series, 60mm bore, 95mm OD, 18mm width
- A: 25° contact angle
- CE: Ceramic balls (Silicon Nitride)
- GA: Special internal clearance and preload (Extra light / Class A)
- /: Separator denoting additional specifications
- HCPA9A: High-Precision PA9A tolerance class with phenolic cage
7012 ACEGA/HCPA9A Bearing Structural Features & Performance Benefits
The 7012 ACEGA/HCPA9A incorporates advanced engineering features for superior performance:
- Ceramic Ball Technology: Silicon Nitride balls significantly reduce centrifugal forces, enabling higher limiting speeds (33,000 rpm) and providing electrical insulation, corrosion resistance, and extended service life.
- Precision Engineering: Manufactured to PA9A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0) for exceptional running accuracy and system rigidity.
- Phenolic Cage: Offers excellent strength-to-weight ratio, reduced friction, and superior performance at high speeds compared to metal cages.
- Universal Matching Design: As an SU designation bearing, it can be universally matched with another identical bearing to create a pre-loaded pair, eliminating the need for selective mounting and ensuring consistent performance.
- High Load Capacity: With a dynamic load rating of 3668 lbf and static load rating of 2745 lbf, it reliably handles significant combined loads in compact designs.
7012 ACEGA/HCPA9A Bearing Typical Application Areas
The 7012 ACEGA/HCPA9A is ideally suited for high-performance applications requiring precision and speed:
- Machine Tool Spindles: High-speed machining centers and grinding spindles
- Precision Robotics: Robot arm joints and CNC rotary tables
- Aerospace Systems: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical drill motors
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
