7012 ACEGA/HCP4AL1
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7012 ACEGA/HCP4AL1
Basic Information
System of measurement
Metric
Weight
0.39 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3668 lbf
Radial static load rating
2745 lbf
Limiting speed
33 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7012 ACEGA/HCP4AL1 Bearing Product Overview & Core Advantages
The 7012 ACEGA/HCP4AL1 is a single row angular contact ball bearing engineered for ultra-high precision and performance. Positioned for demanding applications, its core advantages stem from its P4A super precision tolerance class and hybrid ceramic ball design. This configuration delivers exceptional rotational accuracy, extended service life, and superior performance under high-speed conditions. The bearing is pre-lubricated and features a universal matchable (SU) design, allowing for flexible mounting in duplex arrangements to support combined radial and axial loads.
7012 ACEGA/HCP4AL1 Bearing Model Code Explained, Specifications & Naming Convention
The model number 7012 ACEGA/HCP4AL1 provides a detailed technical specification:
- 7012: Basic series designation (60mm bore, 95mm OD, 18mm width).
- A: Denotes a 25° contact angle, optimized for carrying high axial loads.
- CE: Indicates the use of Hybrid Ceramic balls (Silicon Nitride), offering reduced weight, higher stiffness, and superior performance at high speeds.
- GA: Specifies a Universal Matchable bearing. Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement.
- HCP4A: Defines the tolerance class. "HC" may refer to a special internal design, and P4A indicates super precision tolerances exceeding ABEC 7/ISO P4 standards.
- L1: Likely specifies a light preload on the bearing.
7012 ACEGA/HCP4AL1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic (Si3N4) balls significantly reduces friction and heat generation. This allows for a higher limiting speed (33,000 rpm), increased stiffness, and longer operational life compared to all-steel bearings.
- Precision & Rigidity: Manufactured to P4A super precision standards with extremely tight dimensional tolerances, this bearing ensures minimal runout and vibration, which is critical for applications requiring high positional accuracy.
- Phenolic Resin Cage: The phenolic cage is lightweight and possesses excellent slip characteristics, contributing to smooth operation at high speeds and reduced centrifugal forces.
- Universal Matching Capability (SU): The universal matchable (SU) design allows two identical bearings to be directly mounted against each other without selective matching, simplifying installation and creating a rigid bearing system capable of supporting combined loads from both directions.
- Optimized Lubrication: The bearing comes pre-lubricated, ensuring immediate operational readiness and reliable performance within its specified temperature range.
7012 ACEGA/HCP4AL1 Bearing Typical Application Areas
The 7012 ACEGA/HCP4AL1 is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace & Defense Instrumentation
- Semiconductor Manufacturing Equipment
