S7012 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7012 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.34 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
11.112 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8775 lbf
Radial static load rating
7538 lbf
Limiting speed
32.5 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
In Stock
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S7012 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S7012 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and reliability. This single-row bearing features a 25° contact angle and is manufactured to P4A tolerance class, ensuring superior running accuracy. Its core advantages include the ability to accommodate combined radial and axial loads simultaneously, excellent high-speed performance with a limiting speed of 32,500 rpm, and enhanced durability through the use of ceramic balls and a phenolic cage. Preloaded to Extra Light (Class A), it is ideal for applications requiring minimal deflection and high system rigidity.
S7012 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7012 ACDGA/HCP4A is decoded as follows:
- S7012: Basic model number denoting a 60mm bore, 95mm OD, 18mm width bearing from a high-precision series.
- AC: Angular Contact design.
- D: High-Grade Ceramic Balls.
- GA: Light Preload (Class A).
- /HC: Phenolic Resin (Phenolic) Cage.
- P4A: Dimensional and running accuracy tolerance class superior to ABEC 7.
S7012 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- Ceramic Balls & High Rigidity: The use of silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and provides excellent wear resistance, contributing to higher limiting speeds and extended bearing life. The 25° contact angle and Class A preload provide high system stiffness, minimizing axial and radial deflection under load.
- Superior Load Capacity: With a dynamic load rating of 8775 lbf and a static load rating of 7538 lbf, this bearing is engineered to handle significant combined (radial and axial) loads reliably.
- Optimized High-Speed Performance: The lightweight phenolic resin cage (HC) ensures stability and low friction at high rotational speeds, while the ceramic balls further enhance the high-speed capability.
- Precision & Universal Matching: Manufactured to P4A tolerance class with tight bore, OD, and width tolerances, this bearing guarantees precise shaft positioning. It is designated as Universal Matchable (SU), allowing it to be mounted in sets (typically 2 or more) to achieve specific preloads and rigidity requirements without selective matching.
S7012 ACDGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and auxiliary power units.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small turbine systems.
