71907 FE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71907 FE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2790 lbf
Radial static load rating
2059 lbf
Limiting speed
56 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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71907 FE/HCP4ADT Bearing Product Overview & Core Advantages
The 71907 FE/HCP4ADT is a super-precision angular contact ball bearing designed for the most demanding high-performance applications. This duplex tandem (DT) matched set delivers exceptional high-speed capability and axial rigidity. Its key advantages include the ability to accommodate heavy combined loads (primarily axial loads in one direction), outstanding running accuracy due to its P4A tolerance class, and optimized performance through the use of advanced materials like a phenolic cage and ceramic balls.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing series and size designation (35mm bore, 55mm OD, 20mm width). |
| FE | Indicates a specific internal design and contact angle (18°). |
| HC | Hybrid Ceramic: Denotes the use of ceramic balls for reduced friction and higher speed. |
| P4A | Specifies the tolerance class, denoting very high precision with enhanced running accuracy and dimensional stability. |
| DT | Duplex Tandem: Indicates the bearings are matched and preloaded in a tandem arrangement to maximize axial load capacity and rigidity. |
71907 FE/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 18° contact angle create an exceptionally rigid setup capable of supporting high unidirectional axial loads and combined loads.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 56,000 rpm. This design minimizes heat generation and power loss.
- Enhanced Precision and Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The hybrid ceramic design offers increased durability, electrical resistance, and the ability to run with minimal lubrication.
- Preload & Matching: Supplied as a preloaded matched set, the bearings are ready for installation, ensuring optimal performance and stiffness without requiring additional adjustment.
71907 FE/HCP4ADT Bearing Typical Application Areas
This super-precision angular contact ball bearing is ideally suited for applications requiring high speed, high rigidity, and extreme accuracy, including:
- Machine Tool Spindles (High-speed milling and grinding)
- Precision Grinding Spindles
- High-Frequency Machining Centers
- High-Speed Robotic Drives
- Advanced Medical Equipment (e.g., Dental handpieces)
- Aerospace Actuators and Control Systems
