7013 CD/PA9ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7013 CD/PA9ADBA
Basic Information
System of measurement
Metric
Weight
0.86 kg
Tolerance class
PA9A
Seal type
Open
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
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
15210 lbf
Radial static load rating
16875 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Lubricated
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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7013 CD/PA9ADBA Bearing Product Overview & Core Advantages
The 7013 CD/PA9ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This back-to-back (DB) matched set features an Extra Light (Class A) preload, delivering superior rotational precision and minimal runout. Its optimized design enables it to handle combined loads—significant radial loads alongside substantial axial loads in both directions—making it ideal for high-speed, high-rigidity spindles and precision machinery where stability is paramount.
7013 CD/PA9ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series, defining the standard boundary dimensions: 65mm bore, 100mm OD, 36mm width. |
| C | Designates a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearing is supplied as a duplex pair. |
| PA9A | Specifies the high-precision tolerance class, ensuring extremely tight dimensional and running accuracy for critical applications. |
| DBA | Defines the matched arrangement as Back-to-Back (DB) with an Extra Light (Class A) preload. |
7013 CD/PA9ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex arrangement creates a wide, rigid support system that effectively counteracts moment loads, providing exceptional shaft positioning stability and system stiffness.
- Superior Load Capacity: Engineered to support combined radial and bidirectional axial loads simultaneously. The 15° contact angle provides an excellent balance between radial and axial load ratings.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components and optimized internal geometry contribute to a high limiting speed of 24,000 rpm.
- Precision Performance: Manufactured to PA9A tolerance class with an Extra Light preload, this bearing set ensures minimal vibration, low noise, and high running accuracy essential for precision machining and instrumentation.
7013 CD/PA9ADBA Bearing Typical Application Areas
This high-precision duplex bearing set is ideally suited for demanding applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and accuracy.
- Precision Rotary Tables: Indexing and positioning systems in CNC machining and measuring equipment.
- High-Frequency Spindles: PCB drilling, engraving, and precision grinding applications.
- Industrial Pumps & Compressors: High-speed shafts where precise axial location and stiffness are critical.
