71900 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71900 CE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.016 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
22 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
11
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
731 lbf
Radial static load rating
351 lbf
Limiting speed
165 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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71900 CE/HCP4ADT Bearing Product Overview & Core Advantages
The 71900 CE/HCP4ADT is a super-precision angular contact ball bearing designed for the most demanding high-speed applications. This duplex tandem (DT) matched pair offers exceptional rotational accuracy and rigidity. Its defining features include a P4A tolerance class for ultra-precision, a phenolic resin cage for superior high-speed performance, and ceramic balls that reduce centrifugal forces, enabling significantly higher limiting speeds and reduced heat generation. This configuration is engineered to handle primarily axial loads in one direction with extreme reliability.
71900 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
The model number 71900 CE/HCP4ADT provides detailed technical specifications:
- 71900: The base series, indicating a miniature, super-precision angular contact bearing with a 10mm bore.
- C: Denotes a 15° contact angle, optimized for high-speed operation.
- E: Indicates optimized internal geometry (internal clearance/preload) for enhanced performance.
- HC: Signifies the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4A: The tolerance class, specifying extremely tight dimensional and running accuracy exceeding ABEC 7.
- A: Indicates a specific preload grade within the matched set.
- DT: Stands for Duplex Tandem arrangement, where two bearings are mounted together to increase axial load capacity in one direction.
71900 CE/HCP4ADT Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of steel rings and ceramic balls (Si3N4) results in lower density, reduced centrifugal load, and higher stiffness. This directly enables the exceptional limiting speed of 165,000 rpm and provides non-conductive properties.
- Phenolic Resin Cage: This lightweight, robust cage material is ideal for high-speed applications, offering excellent strength-to-weight ratio and smooth operation under high centrifugal forces.
- Duplex Tandem (DT) Matched Set: Two bearings are pre-matched and preloaded to function as a single unit. This arrangement provides maximum axial rigidity and load capacity in one direction, making it ideal for precise spindle applications.
- Super-Precision P4A Tolerance: Guarantees minimal runout and vibration, which is critical for applications requiring high rotational accuracy and surface finish quality.
- Pre-lubrication: The bearing comes lubricated, ensuring immediate startup and reliable initial operation.
71900 CE/HCP4ADT Bearing Typical Application Areas
This bearing is specifically engineered for high-performance machinery where speed, precision, and rigidity are paramount.
- High-Frequency CNC Spindles
- Precision Grinding Machine Spindles
- PCB Drilling & Milling Spindles
- High-Speed Machining Centers
- Turbo-Molecular Pumps
- Instrumentation and Dental Handpieces
