S7024 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7024 CEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
2.04 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.004mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
29
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12870 lbf
Radial static load rating
12375 lbf
Limiting speed
11 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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S7024 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S7024 CEGA/HCP4A is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. As a universally matchable (SU) single bearing, it is designed to be paired with an identical unit to form a preloaded duplex set, delivering exceptional rotational accuracy and system stiffness. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior running accuracy from its P4A tolerance class, and outstanding high-speed performance enabled by its ceramic balls and phenolic cage.
S7024 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7024 | Basic bearing series, indicating a 120mm bore, 180mm OD, and 28mm width. |
| CE | Indicates a 15° contact angle and universal matchable (SU) design. |
| GA | Specifies an Extra Light (Class A) preload. |
| HCP4A | Denotes the P4A super-precision tolerance class and the use of hybrid ceramic balls (Silicon Nitride). |
S7024 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and enables a higher limiting speed of 11,000 rpm. This construction also provides superior resistance to wear and a longer service life.
- Phenolic Cage: The lightweight and robust phenolic cage is ideal for high-speed operation, offering excellent dimensional stability and low friction, which contributes to smooth running and reduced vibration.
- Super-Precision P4A Tolerance: Manufactured to the strictest P4A tolerance class, this bearing guarantees minimal runout and extreme rotational accuracy, which is critical for applications requiring high positional precision.
- Universal Matchability (SU): As a universally matchable bearing, two identical S7024 CEGA/HCP4A units can be paired in any combination (DB, DF, DT) to achieve the required preload and rigidity without selective mounting, simplifying installation and inventory.
- High Load Capacity: With a dynamic load rating of 12,870 lbf and a static load rating of 12,375 lbf, it reliably sustains significant combined loads.
S7024 CEGA/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where speed, precision, and rigidity are paramount. Key application areas include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Aerospace & Defense Systems
- Medical Equipment Spindles
