S71913 ACE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71913 ACE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
0.68 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
52 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9360 lbf
Radial static load rating
10462 lbf
Limiting speed
31 X 1000 rpm
Lubrication
Grease
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
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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S71913 ACE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S71913 ACE/HCP4AQBCA is a high-precision quadruplex back-to-back angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This metric series bearing features a sealed design and is preloaded to Extra Light / Class A specifications, ensuring minimal deflection under load. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stability, making it ideal for high-speed, high-rigidity spindles and precision machinery where positional accuracy is critical.
S71913 ACE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-Precision Angular Contact Ball Bearing Series |
| 1913 | Standardized size designation (Bore: 65mm, OD: 90mm, Width: 52mm) |
| ACE | Contact Angle of 25° |
| HC | Hybrid Ceramic Balls (Ceramic balls, Steel rings) |
| P4A | High Precision Tolerance Class (Superior to ABEC 7) |
| QBC | Quadruplex Back-to-Back Matched Set Arrangement |
S71913 ACE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity & Stability: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, which is crucial for maintaining precision in machining and positioning applications.
- Superior High-Speed Capability: The combination of a lightweight phenolic cage and hybrid ceramic balls (lower density than steel) reduces centrifugal forces, enabling higher limiting speeds (31,000 rpm) and lower operating temperatures.
- Enhanced Load Capacity: With a 25° contact angle and four bearings in a set, this configuration provides a high radial dynamic load rating of 9360 lbf and excellent thrust capacity in both directions.
- Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures smooth, quiet operation with minimal runout. The sealed design with pre-applied grease protects against contamination, offering reliable, long-term performance.
S71913 ACE/HCP4AQBCA Bearing Typical Application Areas
This high-performance bearing set is ideally suited for:
- High-Speed Machine Tool Spindles (CNC milling, grinding, and jig boring machines)
- Precision Robotic Drives and Rotary Actuators
- High-Frequency Motorized Spindles
- Aerospace & Defense Instrumentation (Gyroscopes, tracking systems)
- Medical Equipment (High-speed dental handpieces, laboratory centrifuges)
