S7016 ACD/P4AQBTC
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7016 ACD/P4AQBTC
Basic Information
System of measurement
Metric
Weight
3.47 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
125 mm
Outside diameter tolerance
-0.004mm to 0
Width
88 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
37125 lbf
Radial static load rating
52200 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Quadruplex Tandem Back-to-Back (QBT)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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
Price available upon request.
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S7016 ACD/P4AQBTC Bearing Product Overview & Core Advantages
The S7016 ACD/P4AQBTC is a super-precision quadruplex matched bearing set designed for the most demanding industrial applications. This metric angular contact ball bearing features a Quadruplex Tandem Back-to-Back (QBT) arrangement, delivering exceptional system rigidity and stability under complex loading conditions. Its P4A tolerance class ensures ultra-high running accuracy, making it ideal for high-speed spindles and precision machinery where uncompromising performance and reliability are paramount.
S7016 ACD/P4AQBTC Bearing Model Code Explained, Specifications & Naming Convention
The model number S7016 ACD/P4AQBTC provides a detailed technical specification:
- S7016: Basic series designation for a 80mm bore, 125mm OD bearing.
- A: Denotes a 25° contact angle, optimized for supporting high axial loads.
- C: Indicates a Moderate preload (Class C), providing enhanced stiffness for the matched set.
- D: Specifies that the bearings are supplied as a matched set.
- /P4A: The tolerance class, signifying ultra-precision dimensions and running accuracy.
- QBT: Defines the matched arrangement as Quadruplex Tandem Back-to-Back.
- C: Indicates the cage material is Phenolic, suitable for high-speed operation.
S7016 ACD/P4AQBTC Bearing Structural Features & Performance Benefits
- Unmatched Rigidity and Stability: The Quadruplex Tandem Back-to-Back (QBT) arrangement of four bearings creates an extremely rigid support system, effectively resisting moment loads and maintaining precise shaft positioning.
- Superior Load Capacity: The 25° contact angle and quadruplex design enable the set to handle significant combined radial and axial loads from both directions simultaneously.
- High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to lower friction and a high limiting speed of 28,000 rpm, which is critical for spindle applications.
- Ultra-Precision Performance: Manufactured to P4A tolerance class, this bearing set guarantees minimal runout and vibration, ensuring high machining accuracy and superior surface finishes.
- Ready-to-Install Solution: As a factory-matched set with pre-applied grease lubrication, it ensures optimal performance out-of-the-box and simplifies the assembly process.
S7016 ACD/P4AQBTC Bearing Typical Application Areas
This high-precision bearing set is engineered for advanced machinery requiring the highest levels of accuracy and speed.
- High-Frequency Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Grinding Spindles
- High-Speed Machining Centers
- Advanced Robotic Drives and Servo Motors
- Other critical applications in the aerospace and semiconductor manufacturing industries.
