S7012 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7012 ACEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.4 kg
Tolerance class
P4A
Seal type
Sealed
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
31 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
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:
$ 139.77
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7012 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S7012 ACEGA/HCP4A is a super-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and high-speed capability. This single bearing features a 25° contact angle and is manufactured to P4A tolerance class, ensuring minimal runout and superior performance. Its core advantages include the ability to accommodate combined radial and axial loads simultaneously, high rigidity due to its optimized internal geometry, and outstanding operational characteristics enabled by its ceramic balls and phenolic cage. This bearing is universally matchable, allowing for flexible mounting configurations in preloaded sets to achieve maximum system stiffness.
S7012 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7012 | Basic bearing designation, indicating a 60 mm bore, 95 mm OD, and 18 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| EGA | Precision class designation. "E" denotes high precision, and "GA" indicates a specific preload group for universal matching (SU). |
| HC | Hybrid Ceramic, signifying the use of ceramic balls for reduced friction, lower heat generation, and higher speed capability. |
| P4A | The tolerance class, specifying extremely tight dimensional and running accuracy tolerances superior to ABEC 7. |
S7012 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at high speeds. This is a key factor for the high limiting speed of 31,000 rpm.
- Phenolic Resin Cage: The phenolic cage is lightweight and possesses excellent slip characteristics, contributing to lower friction, smoother operation, and higher acceleration capabilities.
- Super-Precision P4A Tolerances: Manufactured to P4A tolerance class, this bearing guarantees minimal radial and axial runout, which is critical for applications requiring high rotational accuracy and reduced vibration.
- Optimized Internal Geometry: The 25° contact angle provides an excellent balance between radial and axial load carrying capacity, making it suitable for combined loads.
- Sealed & Pre-Lubricated: As a sealed bearing with factory-applied grease lubrication, it is protected from contamination and is ready for immediate use, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S7012 ACEGA/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications where speed, accuracy, and rigidity are paramount.
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and drilling centers.
- Precision Robotic Drives: In robot arm joints and high-precision gearboxes.
- High-Frequency Motors and Spindles: Used in PCB drilling and dental handpieces.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and auxiliary power units.
- Medical and Laboratory Equipment: For centrifuges and other high-speed diagnostic devices.
