S71914 ACE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71914 ACE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
1.11 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
64 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12442 lbf
Radial static load rating
13725 lbf
Limiting speed
28 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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S71914 ACE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S71914 ACE/HCP4AQBCA is a precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This metric bearing features a back-to-back quadruplex (QBC) arrangement, providing superior stiffness and the ability to handle significant combined loads (radial and axial). Manufactured to ABEC 7 / P4A tolerance class, it ensures high running accuracy. The use of ceramic balls and phenolic cage contributes to its high-speed capability and stable performance across a wide temperature range.
S71914 ACE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71914 | Basic bearing series, indicating a 70mm bore, 100mm OD, and high-precision angular contact design. |
| ACE | Internal design code, typically relating to optimized internal geometry and contact angle (25°). |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced friction, higher speed, and longer service life. |
| P4A | Tolerance class equivalent to ABEC 7, denoting very high precision for running accuracy and dimensional stability. |
| QBC | Quadruplex Back-to-Back arrangement. Four bearings are matched and mounted in a back-to-back configuration for maximum system rigidity. |
S71914 ACE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system, capable of supporting heavy combined loads and moments. The 25° contact angle is optimized for sustaining substantial axial loads.
- High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a high limiting speed of 28,000 rpm, minimizing heat generation and power loss.
- Precision & Accuracy: Manufactured to P4A tolerance with tight dimensional controls on bore, outside diameter, and width, ensuring predictable performance and precise shaft positioning.
- Pre-Lubrication & Sealing: The bearing is pre-lubricated with grease suitable for a temperature range of -30°C to 110°C and is sealed to protect against contamination during handling and storage, preserving performance.
S71914 ACE/HCP4AQBCA Bearing Typical Application Areas
This high-performance quadruplex bearing set is ideally suited for applications demanding the utmost precision, speed, and rigidity, such as:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Aerospace Actuators and Control Systems
- Medical and Dental Equipment Spindles
