S71914 ACB/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71914 ACB/HCP4ADBA
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
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
32
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4770 lbf
Radial static load rating
5310 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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 ACB/HCP4ADBA Bearing Product Overview & Core Advantages
The S71914 ACB/HCP4ADBA is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This metric sealed bearing features a Back-to-Back (DB) matched arrangement and an Extra Light (Class A) preload, delivering superior high rigidity and rotational accuracy. Its construction enables it to handle combined loads—significant radial and bidirectional axial loads—simultaneously, making it ideal for high-speed, high-reliability machinery where precision is paramount.
S71914 ACB/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number S71914 ACB/HCP4ADBA deciphers its technical specifications as follows:
- S: Denotes a bearing with a super-precision tolerance class.
- 7: Identifies the bearing type as Angular Contact.
- 19: Indicates the bore diameter code (70 mm).
- 14: Specifies the dimension series.
- ACB: Signifies the contact angle and internal design. A represents a 25° contact angle, and B indicates modified internal design for optimal performance.
- HCP4A: Defines the tolerance class P4A, indicating extremely high running accuracy and dimensional stability.
- DBA: Confirms the Duplex Back-to-Back arrangement with an Extra Light (Class A) preload.
S71914 ACB/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex Back-to-Back (DB) arrangement creates a rigid, moment-resistant bearing system, significantly enhancing machine tool stiffness and positioning accuracy.
- Superior Load Capacity: Engineered with a 25° contact angle and dual rows of balls, this bearing excels at supporting combined radial and axial loads from both directions.
- High-Speed Performance: The lightweight phenolic resin cage and the use of ceramic balls reduce centrifugal forces and friction, enabling a high limiting speed of 22,000 rpm. This combination is ideal for high-speed spindles.
- Precision & Longevity: Manufactured to P4A tolerance class with a sealed design and pre-lubricated with grease, it ensures consistent, long-term precision operation with minimal maintenance.
S71914 ACB/HCP4ADBA Bearing Typical Application Areas
This high-performance bearing is specifically suited for:
- Machine Tool Spindles (e.g., CNC machining centers, grinding spindles)
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
- Medical and Dental Equipment Spindles
