71907 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71907 CE/HCP4ADBA
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
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2812 lbf
Radial static load rating
2092 lbf
Limiting speed
56 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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71907 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 71907 CE/HCP4ADBA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. This duplex back-to-back (DB) matched pair offers superior rigidity and can accommodate combined radial and axial loads. Manufactured to P4A tolerance class and featuring ceramic balls and a phenolic cage, it is engineered for high reliability in demanding, precision environments.
71907 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates a 15° contact angle. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes a high-precision tolerance class with specific running accuracy requirements. |
| DB | Specifies the bearings are supplied as a Duplex Back-to-Back matched set. |
| A | Indicates an Extra Light preload is applied to the matched set. |
71907 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and can handle significant combined radial and axial loads.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 56,000 rpm.
- Extended Service Life & Reduced Heat Generation: Ceramic balls are harder, lighter, and have a lower coefficient of thermal expansion than steel, leading to less friction, lower operating temperatures, and longer service life.
- Precision Operation: Manufactured to ABEC 7 / P4A tolerance standards, this bearing ensures minimal runout and vibration for applications requiring the highest levels of accuracy.
71907 CE/HCP4ADBA Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Dental and Medical Handpiece Drives
- Aerospace Control Systems
