71907 FEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71907 FEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.067 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
10 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
1712 lbf
Radial static load rating
1024 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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
71907 FEGA/HCP4A Bearing Product Overview & Core Advantages
The 71907 FEGA/HCP4A is a single row angular contact ball bearing engineered for ultra-high precision applications. Positioned in the P4A super-precision class, it delivers exceptional rotational accuracy and running stability. Its core advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it ideal for machine tool spindles and other high-performance equipment requiring superior rigidity and speed capabilities. The combination of a ceramic ball and phenolic cage contributes to its high-speed performance and reduced operational friction.
71907 FEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing designation, indicating a light series, single row angular contact bearing with a 35mm bore. |
| FE | Designates a universally matchable (SU) bearing, allowing for precise preload setting when mounted in pairs. |
| GA | Indicates an Extra light preload (Class A) for minimal friction and optimal high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), offering advantages in speed, stiffness, and temperature resistance. |
| P4A | Denotes a super precision tolerance class, exceeding ABEC 7/ISO P4 standards for runout and dimensional accuracy. |
71907 FEGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized 18° contact angle and robust internal geometry provide excellent resistance to combined loads, ensuring stable performance under demanding conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-friction ceramic balls significantly reduce centrifugal forces and heat generation, enabling a high limiting speed of 56,000 rpm.
- Enhanced Durability & Thermal Stability: Hybrid ceramic construction provides superior resistance to wear and thermal expansion compared to all-steel bearings, maintaining precision over a wide temperature range (-30°C to 110°C).
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, guaranteeing consistent, high-accuracy performance.
71907 FEGA/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-end applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments.
- Medical Equipment: High-speed dental handpieces, imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots, precision stages.
