S7010 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7010 ACEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.23 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3330 lbf
Radial static load rating
2250 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Grease
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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S7010 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S7010 ACEGA/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior speed performance. Its defining characteristic is the 25° contact angle and P4A super-precision tolerance class, enabling it to handle significant combined radial and axial loads. Manufactured with a ceramic ball and phenolic cage combination, it is ideally suited for high-speed, high-rigidity applications such as machine tool spindles.
S7010 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7010 ACEGA/HCP4A is decoded as follows:
- S70: High-precision angular contact bearing series.
- 10: Bore diameter code (50 mm).
- AC: 25° contact angle.
- E: Optimized internal design for high speed.
- GA: Preload specification (Extra light / Class A).
- HC: Hybrid Ceramic construction (Ceramic balls, steel rings).
- P4A: Tolerance class exceeding ABEC 7/ISO P4, indicating ultra-high running accuracy.
S7010 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds (46,000 rpm). This construction also offers enhanced durability and resistance to wear.
- High-Speed Phenolic Cage: The phenolic cage provides excellent dimensional stability and low friction at high rotational speeds, contributing to smooth operation and extended service life.
- Super-Precision P4A Tolerance: With extremely tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and vibration, which is critical for high-precision machining and instrumentation.
- Universal Matching (SU): Bearings are universally matchable, allowing two bearings to be mounted in a back-to-back (DB) or face-to-face (DF) arrangement without selective assembly, simplifying installation and providing high system rigidity.
S7010 ACEGA/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics
- High-Frequency Motors and Spindle Drives
- Aerospace Instrumentation
- Medical and Dental Equipment
