S7013 ACD/P4AQBTB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7013 ACD/P4AQBTB
Basic Information
System of measurement
Metric
Weight
1.73 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
72 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
23400 lbf
Radial static load rating
31500 lbf
Limiting speed
31 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
Light / Class B
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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S7013 ACD/P4AQBTB Bearing Product Overview & Core Advantages
The S7013 ACD/P4AQBTB is a super-precision angular contact ball bearing designed for the most demanding applications. Its defining feature is the Quadruplex Tandem Back-to-Back (QBT) matched arrangement, providing exceptional axial rigidity and the ability to handle complex combined loads. Manufactured to P4A tolerance class and preloaded, this bearing delivers superior running accuracy, high-speed capability, and reliable performance in compact, high-stiffness mounting configurations.
S7013 ACD/P4AQBTB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7013 | Standard bearing series with 65mm bore, 100mm OD. |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates ABEC 7 / P4 precision class with enhanced running accuracy tolerances. |
| QBTB | Signifies a Quadruplex Tandem Back-to-Back matched set of 4 bearings, optimized for maximum axial and moment load stiffness. |
S7013 ACD/P4AQBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity & Load Capacity: The QBT arrangement of four bearings creates an extremely rigid system capable of supporting heavy combined radial and axial loads and resisting moment loads. The 25° contact angle is optimized for high axial load carrying capacity.
- Super-Precision Performance: Manufactured to P4A tolerance class with a Light / Class B preload, this set ensures minimal runout, smooth operation, and precise rotational accuracy critical for high-speed spindles.
- High-Speed Capability: The lightweight, durable phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 31,000 rpm, reducing centrifugal forces and operational temperatures.
- Sealed & Pre-Lubricated: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate installation, offering long-term, maintenance-free operation within its specified temperature range.
S7013 ACD/P4AQBTB Bearing Typical Application Areas
This precision quadruplex bearing set is engineered for high-performance machinery requiring ultimate rigidity and speed. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors in automation.
- Other Equipment: Wherever a compact, pre-matched, and pre-loaded bearing arrangement is needed for high stiffness and accuracy.
