71901 CE/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71901 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.02 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
776 lbf
Radial static load rating
396 lbf
Limiting speed
165 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
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
71901 CE/P4ADBA Bearing Product Overview & Core Advantages
The 71901 CE/P4ADBA is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy and performance. This duplex bearing comes in a Back-to-Back (DB) matched arrangement, providing exceptional rigidity and the ability to withstand combined loads (radial and axial loads from both directions). Manufactured to the stringent P4A tolerance class and featuring a phenolic cage, it is engineered for high-speed operation and superior running accuracy in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71901 | Basic bearing series and size designation (12mm bore, 24mm OD). |
| CE | High-precision bearing with a 15° contact angle. |
| P4A | Indicates an ABEC 7 / ISO P4 tolerance class with additional running accuracy requirements. |
| DB | Signifies a Duplex Back-to-Back pre-set matched pair. |
| A | Denotes an Extra Light preload level for minimal friction and optimal high-speed performance. |
71901 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The Back-to-Back (DB) duplex arrangement creates a wide, rigid support system that effectively resists moment loads and can handle significant combined radial and axial loads from both directions.
- Super-Precision & High-Speed Performance: Manufactured to P4A tolerance class with extremely tight dimensional and running accuracy tolerances. The lightweight phenolic resin cage and optimized internal geometry enable a high limiting speed of 165,000 rpm.
- Optimized for Precision: The 15° contact angle provides an excellent balance between axial load capacity and speed capability. The extra light preload (Class A) ensures minimal friction and heat generation, critical for maintaining accuracy in high-speed spindles.
- Superior Materials: Constructed from high-grade chrome steel for both rings and balls, ensuring long service life and consistent performance under demanding conditions.
71901 CE/P4ADBA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications requiring extreme precision and speed, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Dental and Medical Handpiece Drives
- Aerospace Instrumentation
