S71912 ACD/P4ATGA
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71912 ACD/P4ATGA
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
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
39 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
9068 lbf
Radial static load rating
9900 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S71912 ACD/P4ATGA Bearing Product Overview & Core Advantages
The S71912 ACD/P4ATGA is a precision angular contact ball bearing designed for exceptional performance in demanding applications. This double row angular contact ball bearing features a universal matchable (SU) design, allowing for flexible mounting arrangements in sets of three to handle combined loads including significant radial and bidirectional axial loads simultaneously. Manufactured to P4A tolerance class, it delivers ultra-high running accuracy, making it ideal for high-speed, high-rigidity spindles and other precision machinery requiring superior rotational stability and long-term reliability.
S71912 ACD/P4ATGA Bearing Model Code Explained, Specifications & Naming Convention
The model number S71912 ACD/P4ATGA provides detailed technical specifications through its suffixes:
- S7: High-precision bearing series
- 1912: Standard dimension series (19: width series, 12: bore code for 60mm)
- ACD: 25° contact angle, double row design
- P4A: Extra high precision tolerance class (superior to ABEC 7)
- TGA: Phenolic resin cage, universal matchable (SU) arrangement
S71912 ACD/P4ATGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design with 25° contact angle provides superior radial and axial stiffness, capable of handling combined loads up to 9068 lbf dynamic and 9900 lbf static ratings.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances (bore/OD: -0.004mm to 0), ensuring minimal runout and vibration for ultra-precise applications.
- High-Speed Capability: The lightweight phenolic cage and optimized bearing dimensions enable a limiting speed of 36,000 rpm, making it suitable for high-speed spindle applications.
- Universal Matching: Designed as Universal Matchable (SU) bearings, they can be arranged in sets of three without selective matching, simplifying installation and maintenance.
- Premium Materials: Constructed from chrome steel for rings and balls, ensuring high durability and wear resistance in demanding operating conditions.
S71912 ACD/P4ATGA Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles
- Precision Industrial Equipment: High-frequency motors, precision measuring instruments
- Automation Systems: Industrial robots, CNC rotary tables
- Medical Equipment: High-speed dental handpieces, medical imaging devices
- Aerospace Components: Gyroscopes, navigation systems requiring high precision
