S7014 ACD/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7014 ACD/P4ADBB
Basic Information
System of measurement
Metric
Weight
1.21 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
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17842 lbf
Radial static load rating
19462 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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7014 ACD/P4ADBB Bearing Product Overview & Core Advantages
The S7014 ACD/P4ADBB is a precision duplex angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and accuracy. This matched set features a back-to-back (DB) arrangement with a Light (Class B) preload, delivering superior stability and resistance to complex combined loads (radial and axial). Manufactured to P4A tolerance class, it ensures minimal runout and high rotational accuracy, making it ideal for demanding, high-speed machinery where reliability is paramount.
S7014 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7014 | Basic bearing series, indicating a 70mm bore, 110mm OD, and 40mm width. |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DB | Duplex Back-to-Back arrangement. Two bearings are mounted opposing each other, providing high moment rigidity. |
| Sealed / Grease | The bearing is sealed and pre-lubricated with grease, offering protection from contaminants and long-term, maintenance-free operation. |
S7014 ACD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement and light preload create a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: The 25° contact angle and robust construction enable it to handle significant combined radial and axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 22,000 rpm. The precision P4A grading further minimizes vibration and heat generation at high speeds.
- Long Service Life & Reliability: Constructed from high-grade chrome steel for rings and balls, the bearing offers excellent durability. The integral seals and factory-applied grease lubrication protect against contamination and provide reliable operation across a wide temperature range (-30°C to 110°C).
S7014 ACD/P4ADBB Bearing Typical Application Areas
This bearing is engineered for high-precision, high-speed applications, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes and Drives
- Industrial Pumps and Compressors
- Robotics and Automation Equipment
