S71915 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71915 CE/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.59 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8190 lbf
Radial static load rating
7650 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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S71915 CE/HCP4ADT Bearing Product Overview & Core Advantages
The S71915 CE/HCP4ADT is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. Operating under the P4A tolerance class, it delivers exceptional rotational accuracy. Its core advantage lies in its duplex tandem (DT) arrangement, where two bearings are preloaded and supplied as a matched set, enabling it to handle significant combined loads—both radial and axial—simultaneously. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and reduced weight, making it an ideal choice for high-performance spindles and precision machinery requiring ultimate reliability.
S71915 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Basic bearing designation, indicating a 75mm bore, 105mm OD, 32mm width angular contact ball bearing. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Denotes an ultra-precision tolerance class with enhanced running accuracy requirements. |
| DT | Specifies a Duplex Tandem preloaded arrangement. Two bearings are mounted together to increase axial load capacity in one direction. |
S71915 CE/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement provides superior axial stiffness and allows the bearing set to withstand heavy combined loads. The 15° contact angle is ideal for applications with high thrust loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage significantly lowers friction and temperature rise, enabling a high limiting speed of 28,000 rpm.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining machining accuracy and surface finish.
- Pre-lubricated & Sealed: The bearing is pre-greased and sealed, protecting against contamination and providing long-term, maintenance-free operation within the specified temperature range.
S71915 CE/HCP4ADT Bearing Typical Application Areas
This super-precision bearing is engineered for high-performance applications where speed, accuracy, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed CNC machining centers, grinding spindles, and milling spindles.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units (APUs).
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
