71907 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71907 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.074 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.007mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1141 lbf
Radial static load rating
821 lbf
Limiting speed
63 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 278.64
/ each
In Stock
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71907 CB/HCP4A Bearing Product Overview & Core Advantages
The 71907 CB/HCP4A is a high-precision single row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. Featuring a 15° contact angle and P4 (ABEC-7) tolerance class, this bearing is designed to handle significant axial loads in one direction while supporting moderate radial loads. Its ceramic ball construction and phenolic cage contribute to lower friction, reduced weight, and superior performance at high rotational speeds. The bearing is preloaded and lubricated from the factory, ensuring immediate operational readiness and consistent performance in demanding environments.
71907 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| CB | Specific internal design and clearance | Indicates a controlled internal configuration for optimized performance and preload. |
| HC | Hybrid Ceramic | Signifies the use of ceramic balls, offering benefits like electrical insulation, reduced weight, and higher limiting speeds. |
| P4 | Tolerance Class (ABEC-7) | Denotes ultra-precision manufacturing tolerances for applications requiring minimal runout and vibration. |
71907 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction and heat generation. This allows for a higher limiting speed (63,000 rpm) compared to all-steel equivalents and provides inherent electrical insulation.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable ball guidance at ultra-high speeds, contributing to smooth operation and extended service life.
- Precision & Rigidity: Manufactured to P4 tolerance class and supplied with a preload, this bearing offers high system rigidity, precise shaft positioning, and minimal deflection under load.
- Optimized Load Capacity: The 15° contact angle is ideal for applications with high axial loads. With a dynamic load rating of 1141 lbf and a static load rating of 821 lbf, it reliably handles combined loading scenarios.
- Ready-to-Install: The bearing is pre-lubricated, simplifying installation and ensuring immediate, reliable performance within its specified temperature range of -30°C to 110°C.
71907 CB/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for applications where speed, accuracy, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and drilling centers.
- Precision Robotics: In high-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, avionics, and radar equipment.
- Medical Equipment: High-speed dental handpieces and surgical drill motors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
