7012 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7012 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.68 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
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14918 lbf
Radial static load rating
15638 lbf
Limiting speed
33 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
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
No drawings available at the moment, will be launched soon
Price:
$ 347.92
/ each
In Stock
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7012 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7012 CD/HCP4ADGA represents a premium class of precision angular contact ball bearings engineered for the most demanding applications. This universal matchable bearing is designed to simultaneously handle combined loads (radial and axial) with exceptional accuracy and reliability. Its defining features include a P4A super-precision tolerance, a ceramic ball construction, and a phenolic cage, making it an ideal solution for high-speed and high-rigidity spindle systems.
7012 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7012 CD/HCP4ADGA is decoded as follows:
- 7012: Basic series number, indicating a 60mm bore, 95mm OD, and 36mm width.
- C: 15° nominal contact angle.
- D: High rigidity internal design.
- HC: Hybrid Ceramic construction (Steel rings with Silicon Nitride balls).
- P4A: Dimensional and running accuracy exceeding ABEC 7 / ISO P4, with enhanced rotational accuracy specifications.
- A: Extra light preload.
- DGA: Universal matchable bearing designation (can be mounted in any combination).
7012 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds (up to 33,000 rpm). This construction also offers superior resistance to wear and electrical arcing.
- High Rigidity & Load Capacity: The optimized internal geometry and 15° contact angle provide high rigidity, supporting substantial radial dynamic load ratings (14,918 lbf) and static load ratings (15,638 lbf) for stable performance under combined loads.
- Precision & Stability: Manufactured to P4A super-precision tolerance and featuring a lightweight, durable phenolic cage, this bearing ensures minimal vibration and exceptional running accuracy, which is critical for maintaining positional precision.
- Universal Matchability (SU): As a universal matchable bearing, it can be mounted in pairs (back-to-back, face-to-face, or tandem) without selective assembly, simplifying installation and ensuring optimal preload and system stiffness.
7012 CD/HCP4ADGA Bearing Typical Application Areas
This high-performance bearing is specifically designed for advanced machinery requiring maximum speed and precision, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary units.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and avionics.
- High-Frequency Motors & Spindles: Where extreme rotational accuracy and speed are paramount.
