7012 CD/HCP4ADGC
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7012 CD/HCP4ADGC
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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7012 CD/HCP4ADGC Bearing Product Overview & Core Advantages
The 7012 CD/HCP4ADGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-loaded pair, it delivers outstanding performance under combined radial and axial loads. Its construction with a ceramic ball and phenolic cage enables superior high-speed capabilities, while the P4A tolerance class ensures the dimensional and running accuracy required for the most demanding machine tool and precision equipment applications.
Model Code Breakdown
The model number 7012 CD/HCP4ADGC provides detailed technical specifications:
- 7012: Basic bearing series with a 60 mm bore and 95 mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed operation.
- D: Indicates the bearing is part of a universally matchable (SU) pair.
- HC: Signifies the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Specifies an ultra-precision tolerance class exceeding ABEC 7/ISO P4.
- ADGC: Indicates specific internal geometry and preload grading for moderate preload (Class C) when mounted as a duplex set.
7012 CD/HCP4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The universal matchable (SU) duplex arrangement creates a rigid bearing system capable of supporting significant combined loads from any direction.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 33,000 rpm.
- Precision Operation: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for maintaining machining accuracy.
- Reduced Heat Generation: Hybrid ceramic construction provides superior lubrication retention and lower operating temperatures at high speeds compared to all-steel bearings.
- Pre-loaded & Ready to Install: Supplied as a matched pair with a moderate preload (Class C), eliminating complex adjustment procedures and ensuring immediate, optimal performance.
7012 CD/HCP4ADGC Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- Machine Tool Spindles for CNC milling, grinding, and turning centers
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motor Spindles
- Advanced Robotics and automated guidance systems
