S71924 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71924 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
1.24 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.01mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
41
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
6862 lbf
Limiting speed
12 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1978.11
/ each
In Stock
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S71924 CB/HCP4A Bearing Product Overview & Core Advantages
The S71924 CB/HCP4A is a precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 15° contact angle and is supplied with a preload, making it ideal for setups where high stiffness and minimal axial/radial runout are critical. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance, while the sealed design ensures long-term reliability. This bearing is designed to handle combined loads, with a significant capacity for thrust loads in one direction.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel (Note: Specification indicates Chrome Steel ring material) |
| 71924 | Bearing series and size designation (120mm bore, 165mm OD, 22mm width) |
| C | 15° contact angle |
| B | 40° contact angle (Note: Specification indicates 15° contact angle) |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4 | P4 (ABEC-7) Tolerance Class, denoting very high precision |
| A | Preload level designation |
S71924 CB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The P4 tolerance class and applied preload ensure exceptional running accuracy and system stiffness, critical for minimizing deflection under load.
- Superior High-Speed Capability: The combination of hybrid ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly lowers friction and allows for a high limiting speed of 12,000 rpm.
- Enhanced Durability & Temperature Resistance: Ceramic balls are electrically insulating, highly corrosion-resistant, and maintain dimensional stability across the operating temperature range of -30°C to 110°C.
- Sealed & Lubricated for Life: The sealed design with factory-applied lubrication protects against contamination and provides long-term, maintenance-free operation in clean environments.
- High Load Capacity: With a dynamic load rating of 6075 lbf and a static load rating of 6862 lbf, this bearing offers reliable performance under significant combined loads.
S71924 CB/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost precision and rigidity.
- High-Frequency Spindles: In PCB drilling and precision engraving machines.
- Medical Equipment: High-speed rotors in dental handpieces and centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Robotics: High-accuracy joints and arm assemblies.
