71813 CDGB/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71813 CDGB/HCP4
Basic Information
System of measurement
Metric
Weight
0.11 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
29
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3038 lbf
Radial static load rating
3285 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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71813 CDGB/HCP4 Bearing Product Overview & Core Advantages
The 71813 CDGB/HCP4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. This metric precision bearing features a P4 tolerance class and a 15° contact angle, optimized to handle significant combined loads (radial and axial) simultaneously. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and thermal stability. Pre-lubricated and designed for universal matching in sets of four, it offers a compact, high-performance solution for demanding machinery.
71813 CDGB/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71813 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 65mm bore, 85mm OD, and 10mm width. |
| CD | Signifies a 15° contact angle and specific internal geometry optimized for high-speed operation. |
| GB | Indicates a Light preload (Class B), which enhances rigidity and minimizes axial play for improved positional accuracy. |
| HCP4 | Denotes the bearing's P4 tolerance class (very high precision) and its suitability for Universal Matchable (SU) arrangement in sets. |
71813 CDGB/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and light preload provide high system rigidity, enabling the bearing to effectively support combined radial and axial loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a very high limiting speed of 36,000 rpm.
- Precision & Accuracy: Manufactured to P4 tolerance class with tight dimensional controls on bore diameter, outside diameter, and width, ensuring minimal runout and vibration.
- Thermal Stability & Longevity: The phenolic cage and ceramic balls offer excellent performance across the specified temperature range (-30°C to 110°C), resisting thermal expansion and degradation.
71813 CDGB/HCP4 Bearing Typical Application Areas
This precision bearing is ideally suited for high-speed, high-accuracy applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Medical and Dental Equipment Spindles
