S71914 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71914 CDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.29 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7762 lbf
Radial static load rating
7650 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
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
Price:
$ 234.03
/ each
In Stock
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Product Overview and Core Advantages
The S71914 CDGA/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This metric-series bearing features a single-row design with a 15° contact angle, optimized to handle combined radial and axial loads simultaneously. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and reduced rotational mass. Manufactured to a P4A tolerance class, it guarantees extremely tight dimensional and running accuracy, making it an ideal solution for high-rigidity, high-speed spindles and precision machinery.
S71914 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| 71914 | Standard bearing series designation for a single-row, 15° contact angle, precision angular contact ball bearing. | Defines the core geometry and contact angle for optimal load handling. |
| C | 15° nominal contact angle. | Balanced capacity for radial and axial loads. |
| DG | Universal Matchable (SU) bearing. Can be mounted in tandem, back-to-back, or face-to-face arrangements. | Provides design flexibility for complex load and rigidity requirements. |
| A | Extra light preload. | Minimizes friction and heat generation, ideal for high-speed applications. |
| HC | Hybrid Ceramic: Steel rings with ceramic balls (Si3N4). | Higher speed capability, longer service life, and electrical insulation. |
| P4A | High precision tolerance class (superior to ABEC 7). | Ensures minimal runout and vibration for superior rotational accuracy. |
Structural Features and Performance Benefits
- Hybrid Ceramic Construction: The use of silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces and friction, enabling a limiting speed of 28,000 rpm. This construction also provides non-conductive properties and enhanced durability.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at high speeds and offers excellent dimensional stability under thermal and centrifugal stresses.
- Precision P4A Grade: With bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures precise shaft and housing fits, critical for applications requiring high rigidity and minimal deflection.
- Universal Matchability: Designed as a Universal Matchable (SU) bearing, the S71914 CDGA/HCP4A can be pre-mounted with other identical bearings in sets (e.g., in pairs or triples) to achieve specific preload and stiffness characteristics without selective mounting.
- Pre-greased and Sealed: The bearing comes pre-lubricated with grease suitable for a temperature range of -30°C to 110°C, providing long-term, maintenance-free operation in clean environments.
S71914 CDGA/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount.
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors and generators.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
