S71908 CE/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71908 CE/HCP4ADBB
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3578 lbf
Radial static load rating
2700 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
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
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71908 CE/HCP4ADBB Bearing Product Overview & Core Advantages
The S71908 CE/HCP4ADBB is a precision angular contact ball bearing engineered for demanding applications requiring high speed, rigidity, and accuracy. This duplex back-to-back (DB) matched set is preloaded (Light / Class B) to provide exceptional system stiffness and rotational precision. Its construction, featuring a phenolic cage and ceramic balls, enables superior high-speed performance and reduced rotating mass. This bearing is designed to handle combined loads (radial and axial) simultaneously, making it an ideal solution for high-reliability machinery.
S71908 CE/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1908 | Bore diameter: 40 mm, Outside diameter: 62 mm, Width: 24 mm. |
| CE | Internal design and cage type designation (phenolic cage). |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls. |
| P4A | Tolerance class P4A, indicating very high running accuracy. |
| DB | Duplex Back-to-Back arrangement of the two matched bearings. |
| B | Preload: Light / Class B. |
S71908 CE/HCP4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The duplex back-to-back (DB) arrangement with a Light preload creates a rigid bearing system that minimizes axial and radial deflection under load, ensuring precise shaft positioning.
- Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, allowing for a high limiting speed of 41,000 rpm.
- Enhanced Durability & Temperature Resistance: Ceramic balls offer higher hardness, lower thermal expansion, and non-conductive properties, leading to extended service life, especially in high-temperature or electrically sensitive environments.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, guaranteeing smooth, quiet, and accurate operation.
- Sealed & Lubricated for Life: The sealed design with factory-applied grease protects against contamination and provides long-term, maintenance-free operation within the specified temperature range.
S71908 CE/HCP4ADBB Bearing Typical Application Areas
This bearing is specified for high-performance applications where speed, precision, and rigidity are critical. Key industries and equipment include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace & Defense Actuators and Instrumentation
- Semiconductor Manufacturing Equipment
