71814 CDGC/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71814 CDGC/HCP4
Basic Information
System of measurement
Metric
Weight
0.12 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 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
31
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3105 lbf
Radial static load rating
3600 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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71814 CDGC/HCP4 Bearing Product Overview & Core Advantages
The 71814 CDGC/HCP4 is a single-row angular contact ball bearing engineered for applications demanding high precision and moderate preload. Positioned in the P4 tolerance class, it delivers exceptional running accuracy and dimensional stability. Its core advantage lies in its optimized design for handling combined loads—simultaneously supporting significant radial loads and axial loads in one direction. The combination of a phenolic cage, ceramic balls, and factory-applied lubrication enables superior high-speed performance, making it an ideal choice for compact, high-reliability spindle assemblies and precision machinery.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| CD | Specifies a 15° contact angle and optimized internal geometry for high-speed operation and moderate preload. |
| GC | Indicates the moderate preload class (Class C), providing enhanced rigidity and reduced deflection under operational loads. |
| HCP4 | Signifies the bearing is Universal Matchable (SU) and manufactured to P4 tolerance class, ensuring ultra-precision and interchangeability in matched sets. |
71814 CDGC/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 15° contact angle and moderate preload (Class C) provide excellent resistance to operational deflection, enabling the bearing to handle high combined loads effectively.
- Superior High-Speed Performance: The lightweight phenolic cage and low-density, high-hardness ceramic balls significantly reduce centrifugal forces, allowing for a high limiting speed of 28,000 rpm.
- Precision & Thermal Stability: Manufactured to P4 tolerance with tight dimensional controls on the bore diameter, outside diameter, and width. The phenolic cage offers good dimensional stability across the operating temperature range.
- Universal Matching Design: As a Universal Matchable (SU) bearing, it can be universally paired with another identical bearing in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement to create a rigid, preloaded set, simplifying procurement and assembly.
71814 CDGC/HCP4 Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- High-Frequency CNC Spindles for milling, grinding, and drilling
- Precision Machine Tool Axles and rotary tables
- High-Speed Robotic Drives and servo motors
- Medical and Dental Handpiece spindles
- Aerospace Instrumentation and gyroscopes
